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3 years ago

Which macromolecules are polymers made of nucleotides

Chemistry

2 answers:

VMariaS [17]3 years ago

8 0

Nucleic Acids are polymers made of nucleotideds

olya-2409 [2.1K]3 years ago

6 0

I believe that nucleic acids are made out of nucleotides

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2Fe + 6HCl -> 2FeCl3 + 3H2 If 7.0 moles of HCl is added to enough iron that the HCl is completely used up, how many

DENIUS [597]

Answer: 3.5 moles of hydrogen gas will be produced.

Explanation:

The balanced chemical equation is:

$2Fe+6HCl\rightarrow 2FeCl_3+3H_2$

As HCl gets completely used up, $HCl$ is the limiting reagent.

According to stoichiometry :

6 moles of $HCl$ produces = 3 moles of $H_2$

Thus 7.0 moles of $HCl$ produces= $\frac{3}{6}\times 7.0=3.5moles$ of $H_2$

Thus 3.5 moles of hydrogen gas will be produced.

3 0

2 years ago

Three factors that affect the solubility of a substance are pressure, the type of solvent, and volume.

nignag [31]

Answer: True. The three factors are as stated above

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3 years ago

A gas mixture contains 3.00 atm of H2 and 1.00 atm of O2 in a 1.00 L vessel at 400K. If the mixture burns to form water while th

sleet_krkn [62]

Answer:

$p_{H_2O}=2.00atm$

Explanation:

Hello!

In this case, according to the following chemical reaction:

$2H_2+O_2\rightarrow 2H_2O$

It means that we need to compute the moles of hydrogen and oxygen that are reacting, via the ideal gas equation as we know the volume, pressure and temperature:

$n_{H_2}=\frac{3.00atm*1.00L}{0.08206\frac{atm*L}{mol*K}*400K}=0.0914molH_2 \\\\n_{O_2}=\frac{1.00atm*1.00L}{0.08206\frac{atm*L}{mol*K}*400K}=0.0305molH_2$

Thus, the yielded moles of water are computed by firstly identifying the limiting reactant:

$n_{H_2O}^{by\ H_2} = 0.0914molH_2*\frac{2molH_2O}{2molH_2} =0.0914molH_2O\\\\n_{H_2O}^{by\ O_2} = 0.0305molO_2*\frac{2molH_2O}{1molO_2} =0.0609molH_2O$

Thus, the fewest moles of water are 0.0609 mol so the limiting reactant is oxygen; in such a way, by using the ideal gas equation once again, we compute the pressure of water:

$p_{H_2O}=\frac{0.0609molH_2O*0.08206\frac{atm*L}{mol*K}*400K}{1.00L}\\\\ p_{H_2O}=2.00atm$

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7 0

3 years ago

The volume of 0.6305 kg of a liquid is 0.430 L. What is its density in g/mL

motikmotik

Answer: 1.466 g/mL

Explanation:

$\frac{0.6305 \text{kg}}{0.430 \text{L}} \cdot \frac{1000 \text{g}}{1 \text{kg}} \cdot \frac{1 \text{L}}{1000 \text{mL}} = 1.466 \,\frac{\text{g}}{\text{mL}}$

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1 year ago

What mass of Ca(OH)2 will be used to make 45.6g of NaOH?

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2 years ago