The speed of 5.70 km/s converted into meters per hour would be 20520000 meters/hour.
What is a unit of measurement?
A unit of measurement is a specified magnitude of a quantity that is established and used as a standard for measuring other quantities of the same kind. It is determined by convention or regulation.
As given the speed is 5.70 km/s
1 km = 1000 m
5.7 km = 5700 m
3600 s = 1 hour
1 s = 1/3600 hour
5.70 km/s = 5700 meters / 1/3600 hour
=20520000 meters/hour
Thus, the speed of 5.70 km/s converted into meters per hour would be 20520000 meters/hour.
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What is the mass percent of an ammonium carbonate solution prepared by dissolving of solid into of water?
the mass percent is 45.67%
The mass percentage of a solution is calculated as the solute concentration in grams per 100 g of the solution.
Given that 39.5 g of water dissolves 33.2 g of ammonium carbonate.
∴
Mass of the solution is (33.2+39.5) g = 72.7 g
So, the solution of 72.7 g includes 33.2 g of ammonium carbonate.
So 100 g solution contains
33.2/72.7×100≈45.67 g ammonium carbonate
Thus the mass percentage of the solution is 45.67%
One approach to show the concentration of an element in a compound or component in a combination is as a mass percentage. The mass percentage is computed by dividing the total mass of the combination by the mass of each component and multiplying the result by 100%.
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A chemist tests the quality of a brand of soft drink. which branch of chemistry might the chemist use?
A chemist tests the quality of a brand of soft drink. The branch of chemistry he might use out of Analytical chemistry, physical chemistry, biochemistry, organic chemistry, and inorganic chemistry is analytical chemistry.
What are the branches of chemistry?
Analytical chemistry, physical chemistry, biochemistry, organic chemistry, and inorganic chemistry are thought to constitute the five main branches. The study of compounds of carbon and itself is called organic chemistry. The study of substances not included in organic chemistry is known as inorganic chemistry. The study of matter's chemistry and the creation of instruments to quantify matter's properties are both aspects of analytical chemistry. The field of chemistry known as "physical chemistry" uses physics to the study of chemical reactions. This often involves using thermodynamics and quantum mechanics to research chemistry. The study of chemical reactions that take place within living things is known as biochemistry.
Thus, the branch of chemistry a chemist uses to test the quality of a brand of soft drink is analytical chemistry.
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A lone pair must reside in which orbital type(s) to participate in resonance/conjugation/delocalization?
If a lone pair is participating in resonance, this capability the atom is both Sp2 or Sp hybridized. Looking at the Sp2 case, that ability there are 3 Sp2 orbitals and one P orbital. Assuming there is no formal cost on the atom, the three hybrid orbitals are used for bonding and the lone P-orbital holds the lone pair. Sp3 orbitals are no longer involved with resonance so the lone pair worried in resonance should never be in an Sp3 orbital.
A mathematically described area round a nucleus in an atom or molecule that may also include zero, one, or two electrons Electrons organize themselves in cloudlike areas round the nucleus referred to as orbitals.
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You probably use the term heat many times a day. As an example, when you cook, dinner, you heat your dinner on a hot stove. When you place a piece of cool metal in the sun, it is heated by the sun’s energy. Why is heat the correct term to use in these examples?
When you place a piece of cool metal in the sun, it is heated by the sun’s energy they show that heat flows from warmer to cooler
In the given example conduction concept are seen conduction means conduction is the transfer of heat energy from one substance to another or within a substance in which heat is transferred via conduction and when heat energy is converted through piece of metal then the substance itself does not flow and heat is transferred internally, by vibrations of atoms and molecules and electrons can also carry heat, which is the reason metals are generally very good conductors of heat
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Instead rudy consumes 500 ml of orange juice (ph 3.3), who has consumed more hydrogen ions?
Rudy consumes 2.5 ×[tex]10^{-4}[/tex] moles hydrogen ions.
What are ions?
A negatively charged ion called an anion has more electrons than protons compared to a positively charged ion called a cation. The electrostatic force causes opposite electric charges to be drawn towards one another, causing cations and anions to attract one another and easily form ionic compounds.
Atomic or monatomic ions are those made up of just one atom, whereas molecular or polyatomic ions are those made up of two or more atoms. Physical ionization occurs when molecules spontaneously collide in a fluid (gas or liquid), producing "ion pairs" that each contains a free electron and a positive ion. Chemical reactions, such as the dissolution of a salt in liquids, can also produce ions.
Rady consumes 500 ml of organic juice of [tex]p^{H}[/tex]
3.3
[tex]p^{H}[/tex] = 33
- log [[tex]H^{+}[/tex]] = 3.3
[[tex]H^{+}[/tex]] = [tex]10^{-3.3}[/tex]
[[tex]H^{+}[/tex]] = 5.01 x [tex]10^{-4}[/tex] M
Volume of organic juice = 500ml = 0.5L
Mole of [tex]H^{+}[/tex] ions = 2.5 ×[tex]10^{-4}[/tex] moles
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Which elements on the periodic table are not reactive? Why?
Answer:
Noble gases are nonreactive, nonmetallic elements in group 18 of the periodic table. They have eight valence electrons, which fill their outer energy level.
Explanation:
Answer:
Noble gases are nonreactive, nonmetallic elements in group 18 of the periodic table. Noble gases are the least reactive of all elements. That's because they have eight valence electrons, which fill their outer energy level.
A proton is moving at a speed of 0.30 mm s-1. if the uncertainty in its momentum is to be reduced to 0.0400 per cent, what will be the uncertainty in its position in nanometers?
Response: 26.3 nm
A proton is moving at a speed of 0.30 mm s-1.
if the uncertainty in its momentum is to be reduced to 0.0400 per cent
0.04% of 0.3 Mms-1 = delta v.
= 1.2*10^-4 Mm/s
= 1.2*10^-4*10^6 m/s
delta v= 120 m/s
delta x *m*delta v=h/4pi
delta x*(1.67*10^-27)*120 = 6.626*10^-34/ 4pi
delta x = 2.63 *10^-10
delta x = 26.3 nm
if the uncertainty in its momentum is to be reduced to 0.0400 per cent, 26.3 nm will be the uncertainty.
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An element with the electron configuration 1s22s22p63s23p6 has how many electrons?
An element with the electronic configuration [tex]1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6}[/tex] has Eighteen electrons.
The electronic configuration [tex]1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6}[/tex] is of a Argon. The Atomic number of argon is eighteen. It is represented by the symbol Ar. It belongs to Group 18 and period number 3 of the periodic table. Argon belongs to the family of noble gases. It is a p-block element. The atomic mass of Argon is 39.948 u.
The number of electrons in an element is equal to the atomic number of the element. As the given electronic configuration is of atomic number eighteen , so the total number of electrons in it is also Eighteen.
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An oxygen (o) atom has _____ protons, _____ neutrons, and _____ unfilled electron orbitals.
An oxygen (o) atom has 8 protons, 8 neutrons, and 2 unfilled electron orbitals.
What is electron orbitals?The three-dimensional regions surrounding an atom's nucleus known as electron orbitals are where a certain electron can be found. Two electrons can fit into each orbital.
They go by the name of atomic orbitals too. The number of electrons an atom contains determines the form of its atomic orbitals. The s, p, d, and f orbitals will all be covered in this lesson. Their orbital forms will also be revealed to us.
An orbital is a mathematical function that, according to its precise definition, represents the location of an electron in an atom with a high degree of probability. According to the mathematical function for that orbital, the term "atomic orbital" often refers to the area of space where an electron might be present.
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if 45.98 g of sodium combines with an excess of chloride gas to form 116.89 g of sodium chloride, what mass of chlorine gas is used in the reaction
The ionic compound sodium chloride, also referred to as salt, has the chemical formula NaCl, which denotes a 1:1 ratio of the ions sodium and chloride. The molar weights of 39.34 g Na and 60.66 g Cl in 100 g of NaCl are 22.99 and 35.45 g/mol, respectively.
If 45.98 g of sodium combines with an excess of chloride gas to form 116.89 g of sodium chloride, what mass of chlorine gas is used in the reaction?
116.89 g – 45.98 = 70.91 g of chlorine must have been used.
The characteristics of sodium and chlorine are as follows:
Water and sodium react violently.The gas chlorine is toxic.Soft and silvery-white sodium metal.Metals are corrosive to chlorine gas.The characteristics of the chemical sodium chloride are as follows:
in water dissolves.Non-poisonous.both crystalline and whiteIn light of this, it may be said that sodium chloride possesses wholly unique properties from those of sodium and chlorine.
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A 21.0 -cm -long cylindrical glass tube sealed at one end is filled with ethanol the mass of ethanol needed to fill the tube is found to be 44.23 g the density of ethanol is 0.789 g/ml calculate the inner diameter of the tube in centimeters
1.843 cm is the inner diameter of a 21.0 cm long cylindrical glass tube.
What is inner diameter of a cylinder?
Two times the wall thickness of the pipe is subtracted from the total exterior diameter to determine the inner diameter of the pipe. By removing the pipe's walls from the computation, just the internal diameter remains.
Lets volume of tube be V
V = 44.23/0.789
calculate by using conversion factor= 56.058 cm^3
Volume of cylinder = πr^2h
⇒ r^2= [tex]\frac{V}{\pi h}[/tex] ,
⇒ r = [tex]\sqrt{\frac{V}{\pi h}}[/tex]
⇒ r = [tex]\sqrt{\frac{56.058 }{\pi 21}}[/tex]
⇒ r = 0.9215 cm
And as we have radius, we can calculate diameter
d = 2r = 2 × 0.9215 cm = 1.843 cm
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Question 13 (1 point)
How many grams of nitrogen are contained in 70.0 g of C6H5NO3 (MW- = 139.1094 u)?
a) 7.05 g of nitrogen
Ob) 8.11 g of nitrogen
Oc) 7.11 g of nitrogen
d) 8.05 g of nitrogen
2
The mass of nitrogen contained in 70.0 g of C6H5NO3 is 7.05g.
How to calculate mass of an element in a compound?The mass of an element in a compound can be calculated by dividing the molar mass of the element by the molar mass of the compound multiplied by the mass of the compound.
According to this question, 70.0 g of C6H5NO3 is contained in a substance.
Molar mass of nitrogen is 14g/mol
Mass of nitrogen = 14g/mol/139.11g/mol × 70g
mass of nitrogen = 7.05g
Therefore, the mass of nitrogen contained in 70.0 g of C6H5NO3 is 7.05g.
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What is the percent yield of a reaction in which 61.7 g of tungsten(vi) oxide (wo3) reacts with excess hydrogen gas to produce metallic tungsten and 9.45 ml of water (d = 1.00 g/ml)?
The percent yield is 65.76 % .
The reaction mentioned in question is
[tex]WO_3 + 3H_2[/tex] → [tex]W + 3H_2O[/tex]
Molecular mass of 231.8 g
Percent yield is determined by calculating the mass of water that is formed by given mass of tungsten(VI) oxide
61.7g [tex]WO_3[/tex][tex]* 1mol WO_3/231.8g[/tex]
[tex]* 3mol of H_2O/ 1mol of WO_3 *18g/ 1mol of H_2O * 1ml/ 1g[/tex]
= 14.37 ml
Percent yield can be calculated by taking ratio of actual and theoretical yield of water formed = [tex]\frac{9.45}{14.37}[/tex] *100
Percent yield = 65.76 %
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The melting point and the normal boiling point of water can be used to
calibrate thermometers. what are these respective temperatures in
kelvins?
1.) 32 and 212
2.) 0 and 373
3.) 0 and 100
4.) 100 and 273
5.) 273 and 373
The melting point and the normal boiling point of water in respective temperatures in kelvins are 273 and 373. The correct option is 5.
What is the boiling point?The boiling point is the point of water when the water vapor of the water is equal to the water vapor of the atmosphere.
The melting point is the point when a solid-state converts into liquid, and changes its physical state.
In Celsius, the boiling point is 100⁰C
In Kelvin, 273 + 100 = 373 K
The melting point is ice is 0⁰C
273 + 0 = 273 K
Thus, the correct option is 5. 273 and 373.
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What is the solution that is added to the cartridge of local anesthetic that can trigger bronchospasms?
Vasoconstrictor Preservative is the solution that is added to the cartridge of local anesthetic that can trigger bronchospasms.
Contraction of the muscles that line the airways (bronchi) in your lungs is referred to as bronchospasms. This causes difficulty in breathing. Chest tightness, Wheezing, Shortness of breath, Difficulty breathing are some of the symptoms of bronchospasms.
Vasoconstrictor Preservative is an additive which is used in local anesthetic. It enhance the duration and quality of the local anesthetic and also decreases surgical blood loss. Local anesthetics without a vasoconstrictor should be used in patients with sulfite allergy. Epinephrine, Levonordefrin, and Norepinephrine are some of the vasoconstrictors used with local anesthetic.
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Which characteristic feature of the sternum should the nurse observe in a client with the diagnosis of pectus carinatum?
Frontward thrust the sternum of a patient with pectus carinatum protrudes forward, forcing the surrounding ribs to slant backward. In the funnel chest, the sternum and surrounding cartilages are visible. The natural anatomical location of the sternum is in the midline and in a straight posture. Barrell chest is characterized by a horizontal sternum and an elevated intercostal angle.
What is pectus carinatum?
The word "pectus carinatum" is used to describe a variety of aberrant protrusions of the front chest wall. Depending on where the deformity is most prominent, it can be either chondrogladiolar or chondromanubrial. Additionally conceivable are lateral abnormalities.Hippocrates noted that persons with the carinatum deformity experienced "difficulty breathing" and had a "sharply pointed chest."
Patients with symptoms describe breathlessness and a reduction in stamina. Some people have chest wall stiffness, increasing emphysema, reduced lung compliance, and more respiratory tract infections.
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09/22/2022
Help please !!
Fast!!
Step 1 convert lbs to kg step 2 kg to g 3rd step g to mg
Here given data is 0.47 pound then we have to convert how many miligram = ?
So here 0.47 pound (lbs) = 0.2131 kg
1 kg = how many gram then 1kg = 1000 gram
So, 0.2131 kg = 213.1 gram
So 1 gram = 1000 mg then
So, 213.1 gram = 0.2131 mg
Then here three conversion are seen means step 1 =0.47 pound (lbs) = 0.2131 kg to step 2 = 2131 kg = 213.1 gram to step 3 = 213.1 gram = 0.2131 mg
This is the conversion from beginning to ending
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46 pints = ? gallons
Potassium nitrate is used for a variety of applications, including fertilizer, rocket fuel, and fireworks. how many molecules of potassium nitrate are in a 25 g sample?
There are 1.5×10^23 molecules molecules of potassium nitrate are in a 25 g sample.
molecules of KNO3 = 25gKNO3 x 1mol/101.11gKNO3 x 6.022x10^23 molecules/1mol = 1.5 x 10^23 molecules.
Molecules are made up of one or more atoms. If they contain more than one atom, the atoms can be the same (an oxygen molecule has two oxygen atoms) or different (a water molecule has two hydrogen atoms and one oxygen atom). Biological molecules, such as proteins and DNA, can be made up of many thousands of atoms.
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An isotope of sodium (na) has a mass number of 22. how many neutrons does it have?
An isotope of sodium (Na) has a mass number of 22 it have 11 neutrons
Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. protons are the positively charged particles which are present in the nucleus of an atom. a neutron is a subatomic particle found in the nucleus of every atom except that of simple hydrogen. here sodium (Na) has a mass number of 22 so, in that sodium 11 proton are present and 11 neutron are present.
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What does density measure? on flocabulary
A
how much liquid is in an object.
B
the amount of space an object takes up.
C
how tightly packed an object’s particles are.
D
the amount of matter contained in an object.
Hello!
Density measures... (c) how tightly packed an object's particles are.
Hope this helps!
What would be considered as a homogeneous among the the following mixtures?
emulsion
pizza
salad
soda
10. Stephen is worried he has a fever. His dad is a scientist though, and only has a thermometer
that measures in Kelvin, and it measures Stephen's temperature to be 312 Kelvin. If Stephen's
temperature is above 100°F, he isn't allowed to go to school. Can Stephen go to school today?
As the elevator (lift) moves to the top of the ramp, the skier's potential energy _________ .
As the elevator (lift) moves to the top of the ramp, the skier's potential energy increasing .
What is potential energy?Potential energy is a form of stored energy that is dependent on the relationship between different system components. A spring has more potential energy when it is crushed or stretched.
A steel ball has far more potential energy raised above the ground than has after falling to Earth. In the raised position it is capable of doing more work.
Potential energy is a characteristic of systems rather than of particular bodies or particles; for instance, the system made up of Earth and the raised ball has more potential energy as they become further apart.
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A block pf wood is 5 long, 4cm wide and 10cm high it weighs 100 grams calculate the density
Volume = 5x3x10 = 150 cm cubed
Mass = 150x100 = 15000 grams
Density = 15000/150 = 100g/cm cubed
The atomic number of oxygen is 8. What is the mass number of a oxygen atom with 7 neutrons?.
Answer: Mass number is 15
Explanation:
Mass number of an atom is the sum or total number of protons and neutrons present in the atom. It is represnted by the letter A
The Atomic number (Z) of an atom is defined as the number of protons in an atom and it is equal to the number of electrons present in the atom.
A= n + p
where n is the number of neutrons and p is the number of protons present in the atom
Z = p = e
Where p is the number of protons and e is the number of electrons present in the atom
Z for oxygen atom is 8
So, Z = p = 8 for oxygen atom
If n = 7
then A for oxygen atom with 7 neutrons is given by
A= n + p = 8+7 = 15.
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An object that is stationary is the result of what kind of force(s)?
no forces
unbalanced forces
net forces
balanced forces
It is a result of "balanced forces".
Hope this helps! Also, if you need help with the other questions regarding this assignment, feel free to check out the study set I made on Quizlet. Thanks and good luck!
Quizlet - "Unit 6: Lesson 2 Newton's First Law QC"
h t t p s : / / q u i z l e t. c o m / 7 3 7 7 5 9 5 5 5 / u n i t - 6 - l e s s o n - 2 - n e w t o n s - f i r s t - l a w - f l a s h - c a r d s / ? n e w
According to gravitational momentum, shown under that have balanced forces acting on them prefer to remain that way. According to Newton's first law balanced forces are affect an object that is stationary.
What is newtons first law ?Unless influenced by an imbalanced force, an item at rest stays at rest, and an object in motion keeps moving in a straight path at a constant pace.
An item that is stationary is one that is not shifting or considered the beginning. It is dormant. In such posture, all the forces exerting pressure on it are balanced out or their combined magnitudes are zero.
Based to their inertia, stationary objects which have already balanced forces acting on them prefer to stay that way. When an unbalanced force is operating on a stationary item will it move.
Thus, option D is correct.
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What are hydrocarbons?
Answer:
a compound of hydrogen and carbon, such as any of those which are the chief components of petroleum and natural gas.
"the rain is rich in benzene and hydrocarbons"
Answer: a compound of hydrogen and carbon, such as any of those which are the chief components of petroleum and natural gas.
Explanation:
in organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons are examples of group 14 hydrides. Hydrocarbons are generally colorless and hydrophobic, and their odors are usually weak or exemplified by the odors of gasoline and lighter fluid.
What does it mean for matter to change physically?
Answer:
Its when it transforms into a diffrent product like water to ice.
Explanation:
A person's heartbeat is 80 beats per minute. if his/her heart beats 3.1e9 times in a lifetime, how long (in whole years) does the person live? disregard leap years.
The person will live 73.62 years
The heartbeats 80 times in 1 minute
Therefore , 1 heartbeat takes [tex]1/80 minutes[/tex] time
In whole life number of heartbeats = [tex]3.1* 10^{9}[/tex]
Thus, time in which [tex]3.1* 10^{9}[/tex] heart beat will occur = [tex]3.1* 10^{9} * 1/80 minutes[/tex]
= [tex]0.03875 * 10^{9}[/tex] minutes
Since 1 minutes =[tex]1.90259 * 10^{-6}[/tex] year
Therefore, [tex]0.3875 * 10^{9}[/tex] minutes = [tex]0.03875 * 10^{9}[/tex] * [tex]1.90259 * 10^{-6}[/tex] year
= [tex].073625* 10^3[/tex] years
= 73.62 years
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