All categories

3 years ago

The average atomic mass of carbon is 12.01 amu. One isotope of carbon has an atomic mass of 12.00 amu

Chemistry

2 answers:

lisov135 [29]3 years ago

8 0

Explanation:

please refer to the attached file

ANEK [815]3 years ago

4 0

Answer:

Explanation:

So when you are calculating relative abundance you are actually calculating the atomic mass on the periodic table. So you are given the two isotopes of Carbon C-12 and C-13. Now you know that the atomic mass of C is 12.01 so you have to see that you have a lot more C-12 because the atomic mass is close to 12. Now you can calculate them out like this (0.99 x 12.0) +(.01 x 13.00)=12.01.

You might be interested in

State the law multiple proportions

pav-90 [236]

The law of multiple proportions is..
Different compounds made of same element have different proportions by mass of those elements.

6 0

2 years ago

Read 2 more answers

Ethanol, C2H6O, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel called gasohol. Ethanol is

ch4aika [34]

Answer:

4054 kcal of heat is released during complete combustion of 354 g of octane.

Explanation:

Heat of combustion of 1 mol of octane is $1.308\times 10^{3}$ kcal

Molar mass of octane = 114.23 g/mol

We know, no. of moles = (mass)/(molar mass)

So, $1.308\times 10^{3}$ kcal of heat is released during complete combustion of 114.23 g of octane.

So, amount of heat is released during complete combustion of 354 g of octane = $(\frac{1.308\times 10^{3}}{114.23})\times 354$ kcal = 4054 kcal

Hence 4054 kcal of heat is released during complete combustion of 354 g of octane.

5 0

3 years ago

Lisa needs to buy a helium tank to fill up all the balloons. If the helium must be compressed from an original volume of 27.0L a

algol13

Answer:

$P_2=135.73psi$

Explanation:

Hello,

In this case we use the Boyle's law which allows us to understand the volume-pressure behavior as an inversely proportional relationship:

$V_1P_1=V_2P_2$

Whereas we solve for $P_2$ as the required final pressure:

$P_2=\frac{V_1P_1}{V_2} =\frac{27.0L*14.7psi}{3.00L}\\ \\P_2=135.73psi$

Best regards.

7 0

3 years ago

Read 2 more answers

URGENT!!! What is the concentration in moles per litre of a solution that contains 7.68 g of H2SO4 in 150.0 mL of water?

hichkok12 [17]

Answer: 0.5225 mcl/l

Explanation:

5 0

3 years ago

Why won't a fat–soluble vitamin dissolve in water?

Nataliya [291]

<span>small organic molecules will not dissolve in water cannot be synthesized by body (except vitamin D) supplements packaged in oily gel caps excesses can cause problems since fat-soluble vitamins are not excreted readily</span>

8 0

3 years ago