The following precipitation reaction can be used to determine the amount of copper ions dissolved in solution. A chemist added 5.00 × 10−2 L of a solution containing 0.173 mol L−1 Na3PO4(aq) to a 5.00 × 10−2 L sample containing CuCl2(aq). This resulted in a precipitate. The chemist filtered, dried, and weighed the precipitate. If 1.21 g of Cu3(PO4)2(s) were obtained, and assuming no copper ions remained in solution, calculate the following: the concentration of Cu2+(aq) ions in the sample solution. the concentrations of Na+(aq), Cl−(aq), and PO43−(aq) in the reaction solution (supernatant) after the precipitate was removed.

Answer:

1,2,6,8,8

Explanation:

1.3511=1

2.473 =3

5.687524=6

7.555=8

8.235=8

Reverse the sign of the second equation, change the sign of the enthalpy and add. Option B

The enthalpy could be obtained by the use of the Hess law of constant heat summation. As such, we have a number steps and it is possible for use to obtain the enthalpy of the final reaction as shown by a series of manipulations.

By inspection, we can see that, if we desire to obtain the enthalpy of the final reaction as shown, then we have to reverse the sign of the second equation, change the sign of the enthalpy and add. Option B

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The de Broglie wavelength of the bullet traveling at 1649 miles per hour is  1.3 x 10^34 m.

The  wavelength that is associated with an object in relation to its quantum and mass is known as de Broglie wavelength.

The particles de Broglie wavelength is inversely proportional to its force.

de Broglie wavelength is expressed as : ^ = h/mv

Where ^ is wavelength, h is plank constant, m is mass and v is velocity.

1 miles = 1.60934 km

So  1649 miles = 2653.8 km

Then 2653.8 x 1000/ 60x60 = 737.2 ms -1.

The momentum  of bullet is p = mv = 0.00693kg x 737.2 ms-1

                                                          = 5.109 kg/ms

Now, de Broglie wavelength = h/p = 6.63 x 10^-34 / 5.109 kg/ms

                                                           =  1.3 x 10^34 m

Thus, de Broglie wavelength of the bullet traveling at 1649 miles per hour is  1.3 x 10^34 m.

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Answer:

skill

Explanation:

Answer: The more air a fish swim bladder contains, the higher the fish will suspend or float in the war.

Explanation:

Taking into account the definition of density, the volume of 1.95 kg of alcohol is 2.6083 quarts.

Density is a quantity that allows us to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density= mass÷ volume

It can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

In this case, you know that:

Replacing in the definition of density:

0.79 g/mL= 1950 g÷ volume

Solving:

0.79 g/mL ×volume= 1950 g

volume= 1950 g÷ 0.79 g/mL

volume= 2468.35 mL= 2.6083 quarts (being 1 mL= 0.00105669 quarts)

In summary, the volume of 1.95 kg of alcohol is 2.6083 quarts.

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The mass of H₂s present in 2.00 L of natural gas at 298 K is 0.002156 g.

The volume hydrogen sulfide in 2.00 L of natural gas at 298 K is calculated as follows:

Volume of hydrogen sulfide = percent composition * volume of natural gas

Volume of hydrogen sulfide = 0.07/100 * 2.00 L

Volume of hydrogen sulfide = 0.014 L

The given temperature is standard temperature.

Density of H₂s at STP is equal to 1.54 g/L.

mass of H₂s = density * volume

mass of H₂s = 0.0014 * 1.54

mass of H₂s = 0.002156 g

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It ought to be "strong." Otherwise, string acid and string coffee would be absurd. So, the proper query would be:

What does the word "strong" mean in the context of strong coffee and strong acid?

Strong coffee indicates that there are more solids and coffee dissolved in the solution. It implies that strong coffee will typically be darker in color. It will also include a lot of caffeine. Strong coffee includes espresso and Death Wish Coffee.

The only acid that totally ionizes in aqueous solution is a strong acid. As soon as it is dissolved in water, it releases one proton H+. Its pH range will be between 0 and 1.

Strong acids include hydrochloric acid and sulphuric acid, for instance.

When strong coffee is dissolved in water, no chemical reaction occurs. When strong acid is dissolved in water, a chemical reaction occurs.

Strong coffee can be consumed, but strong acid cannot because they are both extremely corrosive.

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Answer:

Explanation:

The mass number of iron is 55.845amu. The mass number is equal to the number of protons added to he number of neutrons in an atom. Each neutron or proton has a mass of about 1amu.Thus we say 55.84500 atomic mass units * 19 =

1 061.055 atomic mass units

On sunlight exposure depends the growth rate of variable plants

A. Geranium plant is sun loving plant because it showed maximum growth in full sun condition. The growth gradually decreases with the availability of sunlight. In full shade Geranium showed only 10% growth.

B. Impatiens plant showed its maximum growth in partial shade condition. The growth of only 40% occurs in dappled sun condition. In partial sun and full shade conditions it shows only 30% growth.  Full sun is harmful for impatiens as it showed only 10% growth.

C. Fuchsia  also show maximum growth in partial shade condition. It showed gradual decrease in growth in dappled sun, full shade, partial sun, and full sun respectively.

D. Trillium is shade loving plant because it shows maximum growth in full shade. It shows the lowest growth in full sun which gradually increases in partial sun, partial shade, dappled sun and full shade respectively.

So basically Geranium is full sun plant, Trillium is full shade plant and Impatiens ad Fuchsia are partial shade plants.

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Taking into account the reaction stoichiometry ,CuCl₂ is the limiting reagent and the theoretical yield of copper produced is 0.2363 grams.

In first place, the balanced reaction is:

2 Al + 3 CuCl₂ → 3 Cu + 2 AlCl₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 54 grams of Al reacts with 403.32 grams of CuCl₂, 0.5 grams of Al reacts with how much mass of CuCl₂?

mass of CuCl₂= (0.5 grams of Al× 403.32 grams of CuCl₂)÷ 54 grams of Al

mass of CuCl₂= 3.734 grams

But 3.734 grams of CuCl₂ are not available, 0.5 grams are available. Since you have less mass than you need to react with 0.5 grams of Al, CuCl₂ will be the limiting reagent.

The theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product, that is, it is the maximum amount of product that could be formed from the given amounts of reagents.

Considering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 403.32 grams of CuCl₂ form 190.62 grams of Cu, 0.5 grams of CuCl₂ form how much mass of Cu?

mass of Cu= (0.5 grams of CuCl₂× 190.62 grams of Cu)÷ 403.32 grams of CuCl₂

mass of Cu= 0.2363 grams

Then, the theoretical yield of copper produced is 0.2363 grams.

In summary, you obtain:

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Answer:

[tex]5.4198[/tex] × [tex]10^{24}[/tex] atoms of hydrogen

Explanation:

Firstly, we need to know how many atoms of [tex]NH_{3}[/tex] are there in 3 moles of [tex]NH_{3}[/tex].

We know that there is [tex]6.022[/tex] × [tex]10^{23}[/tex] atoms in a mole of any substance.

[tex]6.022[/tex] × [tex]10^{23}[/tex] is Avogadro's Constant

[tex]6.022[/tex] × [tex]10^{23}[/tex] × 3 =  [tex]1.8066[/tex] × [tex]10^{24}[/tex]

Therefore in 3 moles of ammonia, there are [tex]1.8066[/tex] × [tex]10^{24}[/tex] atoms.

Next, you should determine how many molecules of an element is present in ammonia.

There is 1 Nitrogen molecule and 3 Hydrogen molecules for every mole of ammonia.

Finally, since we know 3 moles of ammonia contains [tex]1.8066[/tex] × [tex]10^{24}[/tex] atoms, we just have to multiply accordingly to get the individual amount of atoms of an element a compound has.

For Nitrogen :

1 × [tex]1.8066[/tex] × [tex]10^{24}[/tex] =  [tex]1.8066[/tex] × [tex]10^{24}[/tex] atoms of nitrogen

For Hydrogen :

3 ×  [tex]1.8066[/tex] × [tex]10^{24}[/tex] =  [tex]5.4198[/tex] × [tex]10^{24}[/tex] atoms of hydrogen

Therefore, there is [tex]5.4198[/tex] × [tex]10^{24}[/tex] hydrogen atoms in 3 moles of ammonia.

Two molecules of hydrogen gas combine with 1 molecule of oxygen gas to form 2 molecules of water.

A word equation is one in which the equation that is shown in the reaction is written in words rather than by the use of the chemical symbols of the elements that are involved.

We have the reaction; [tex]2H_{2} (g) + O_{2} (g) ---- > 2H_{2} O(l)[/tex], in order for this reaction to be written in the word equation form we have; Two molecules of hydrogen gas combine with 1 molecule of oxygen gas to form 2 molecules of water.

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Nursing needs assessments involve gathering subjective and factual information, including the patient's psychosocial history, family history, surgery history, medical history, and medication history.

Introduction Hematologic diseases, sometimes known as blood disorders or disorders of the blood-forming organs, affect millions of Americans. Hematologic diseases, in addition to blood cell tumors, also include rare genetic disorders, HIV-related ailments, sickle cell disease, anemia, and side effects from chemotherapy or blood transfusions.

In hematologic disorders, the genetic condition is passed from parents to their offspring.

Hemoglobin can be aberrant in numerous ways.

a condition like sickle cell anemia, thalassemia.

Certain blood disorders are brought on by a decrease in red blood cell formation.

• Nursing needs assessments involve gathering subjective and factual information, including the patient's psychosocial history, family history, surgery history, medical history, and medication history.

• The patient's family should also be checked for similar disease patients, and accurate disease-related data must be gathered.

• From time to time, thoroughly review all of the patient's reports. Which the patient reported early.

Using clinical judgment, do an analysis or diagnosis to determine the patient's condition and identify the primary causes.

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Answer:

down below

Explanation:

Judy Hopps was one of the smaller prey animal while the others were predators or bigger prey animals. Meaning, she was tiny and in some minds, was easier to take down or may not be able to do the job as well as the bigger animals. Also, she was, less noticeably, the only female prey animal.

Answer:

check explanation

Explanation:

Sodium Iodide=NaI

Potassium perchlorate=KClO4

Calcium nitrate= Ca(NO3)2

Copper (ii) sulfate=CuSO4

Answer: 6

Explanation: There are 25 elements found in living things. How many of these elements are found in some organisms but not all? 1 6 19 25

The oxide contains 22.24% O by mass, so the identity of the metal as a chemical symbol is lead (Pb).

A substance with high electrical conductivity, luster, and malleability, which readily loses electrons to form positive ions (cations) are called metals.

Mass percentage of oxygen in the oxide, i.e.,

ω(O) divided by 100 ω(O)

=22.24% ÷ 100%.

Mass percentage of oxygen in the oxide, i.e .ω(O) = 0.2224

Now the mass percentage of oxygen in the oxide multiplied by 100 ten we get the mass of oxygen in the oxide. If we take 100 grams of compound:

1) m(O) = ω(O) * 100 g.

Mass of oxygen in the oxide, i.e. m(O) = 0.2224 * 100 g.

Mass of oxygen in the oxide. i.e., m(O) =22.24g

Amount of oxygen, i.e.,

n(O) = mass of oxygen in the oxide ÷ molar mass of oxygen.

n(O) = m(O) ÷ M(O) amount of oxygen

n(O) = 22.24g ÷ 16 g/mol,

amount of oxygen i.e. n(O) = 1.39 mol

Mass of metal in the oxide, i.e., m(M) = 100 g - 22.24 g.

Mass of metal in the oxide i.e., m(M) = 77.76g

Now we to find the molar mass of metal oxide,

Molar mass of the metal :

= mass of metal in the oxide ÷ amount of oxygen(M)

= m(M) ÷ n(M). M(M)

= 77.76 g ÷ 1.39 mol.

Molar mass of the metal will be 5.94 g/mol.

Therefore, The identity of the metal is lead (Pb).

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A light wave which has a frequency of 5 x 1014 Hz and a speed of 3 × 10 m/s has wavelength is 0.6 × 10^-6.

Frequency of light wave = ν = 5 × 10¹⁴ Hz

Speed of light c = 3 × 10⁸ m/s

we have to find out wavelength λ of light wave

We know that,

c = λ × ν

λ = c / ν

= 3 × 10⁸ / 5 × 10¹⁴

0.6 × 10^-6

Therefore, wavelength of light wave is

0.6 × 10^-6

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The lab procedure

The 150 mL beaker's contents should be emptied into the sink, followed by a thorough water rinse of the beaker and temperature probe sodium . Add 20 g of ice to the beaker after weighing it.

sufficient water to make the combined weight match the combined weight of the ice and water consumed above. Put the thermometer in the slush, press the green button, and agitate the mixture.

For two minutes, slush. sodium  Stir the slush while adding the 1.0 g of salt chloride. five minutes Simply press the red button. After saving the data, select Store Latest Run from the list.

The menu for experiments print the graph with both the sodium chloride and urea plots visible at once. sodium  Which plot corresponds to which solid should be noted on the printout.

The 150 mL beaker's contents should be emptied into the sink, followed by a thorough water rinse of the beaker and temperature sodium .

Simply select Show Data Set from the Data menu, followed by the Run # you want to display, to examine one of your earlier plots. It is possible to display multiple pieces of data at once.

The Latest Run is the most recent Run, and the Runs are numbered consecutively in the order in which they were acquired. To display the chosen plot or plots, just use the commands Hide Data Set and Show Data Set. The plot display settings (such as axes scaling, etc.) may need to be changed.

Display one or both students' temperature charts using the y-axis label, as desired. The Data menu also includes options for deleting individual data sets.

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Answer:

Calcium tungstate

287.93 g/mol

Answer: 0.66 g/mL

Explanation: The formula for density is d= m/v where m=mass and v=volume.

The mass was given in the problem, m= 1.32kg

The volume was also given in the problem, v= 2.0L

d= m/v ---> d= 1.32kg/2.0L ---> d=0.66kg/L

The problem calls for the answer to be written in g/mL, so we must convert the units. 1 kg contains 1000g and 1 L contains 1000 mL.

1000g/1000mL = 1 so the units change but the 0.66 does not. Therefore, your answer is 0.66g/mL (Two significant figures because 2.0 only has 2 significant figures).

Answer:

ice creem cone  candy

Explanation

4.63 gram of Cooper(II) chloride contain 2.17 grams of Cu²+

Molar mass of copper(II) chloride = 134.45 g/mol

Molar mass of copper = 63 grams

The average mass of an element's atoms expressed in atomic mass units is known as its atomic mass (amu, also known as daltons, D). The mass of each isotope is multiplied by its abundance to produce the atomic mass, which is a weighted average of all the isotopes of that element.

63 gram of copper is present in 134.45 g/mol of copper(II) chloride

1 gram copper is present in copper(II) chloride = 134.45/63 = 2.13 gram

2.17 gram Cu²+ in copper(II) chloride = 2.13 gram x 2.17 gram = 4.63 gram

Hence, 4.63 gram of Copper(ii) chloride contain 2.17 grams of Cu²+

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Therefore, we require roughly 589,008.49 Empire State building-height stacks of dimes (856,418,343.3 / 1,454).

A stack of 100 dimes is about 5.3 inches tall. $10 is equal to 100 dimes. Therefore, 1,939,060,400 stacks of 100 dimes are required. This astounding number of dimes is 856,418,343.3 feet tall (1,939,060,400 x 5.3/12).

The Empire States Building is 1,454 feet tall when the antenna is added. Therefore, we require roughly 589,008.49 Empire State building-height stacks of dimes (856,418,343.3 / 1,454). Compared to 2016, when it climbed by 2.8 percent, or $503.8 billion, current-dollar GDP increased by 4.1 percent, or $766.1 billion, to a level of $19,390.6 billion in 2017. In 2021, the current-dollar GDP reached a level of $22.99 trillion, up 10.0% or $2.10 trillion.

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Answer:

I believe H2.

Explanation:

It's H2 because there are two electrons on there being share by 2 atoms.

Since Hydrogen can only get a maximum of 2 electrons and no other atoms are present, that is why it's H2.

Answer:

An Igneous rock turns into a Sedimentary rock after going through two processes.

Explanation:

An igneous rock is crushed into little shards of rock called sediment, the sediment is then packed together by other rocks or strong forces, that form together to make a Sedimentary rock.

You can see the image for your explanation.

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Igneous rocks are broken down into sediments which are then compressed by forces of water, wind to form sedimentary rocks.

They are the types of rocks which are formed as a result of accumulation of minerals or organic particles at the surface of the earth.Sedimentation is the name given to a collective process which cause the particles to settle.

The study of sedimentary rocks is useful in civil engineering and as important sources of coal, fossil fuels and ores.The color of sedimentary rock is often determined by iron content and sometimes due to the presence of organic matter.

They are classified based on origin in to 4 types which are clastic, biochemical ,chemical and other sedimentary rocks.While based on composition they are classified as siliciclastic,carbonate ,evaporite,organic rich,siliceous ,iron-rich and phosphatic sedimentary rocks.

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Answer:

twenty charecter answer

The equilibrium constant is K=[KNO3]/[AgNO3][KSCN]

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