3 years ago

3. A diamond contains 0.090 moles of carbon What is the mass of the diamond?

Chemistry

1 answer:

Nady [450]3 years ago

3 0

Answer:

1.0809

Explanation:

You might be interested in

The attraction of hydrogen to oxygen in a water molecule has unequal sharing of electrons, caused by a(n) _____.

zheka24 [161]

Answer:

Explanation:

got it right on my test

5 0

2 years ago

Read 2 more answers

A balloon contains 8.4 L of helium gas at STP. How many moles of helium are in the balloon?

ozzi

Answer:

$0.38\ \text{moles of He}$

Explanation:

$\rho$ = Density of helium at stp = 0.179 g/L

M = Molar mass of helium = 4 g/mol

V = Volume of helium = 8.4 L

Mass of helium

$m=\rho V\\\Rightarrow m=0.179\times 8.4\\\Rightarrow m=1.5036\ \text{g}$

Number of moles is given by

$n=\dfrac{m}{M}\\\Rightarrow n=\dfrac{1.5036}{4}\\\Rightarrow n=0.3759\approx0.38\ \text{moles of He}$

The number of moles of helium in the balloon is $0.38\ \text{moles}$

3 0

2 years ago

Which type of sedimentary rock is pictured here?

lisabon 2012 [21]

Answer: there is no photo so we can’t answer it:)

Explanation:

8 0

2 years ago

An atom with an atomic mass of 89 and an atomic number of 39 has how many neutrons

raketka [301]

89 - 39 = 50

The atom has 50 neutrons. Hope this helps! :)

3 0

3 years ago

Read 2 more answers

The density of copper is listed as 8.94 g/mL. Two students each make three density determinations through experimentation. Stude

Olin [163]

Answer:A) After the values are added, we determine how many significant figures are involved by looking at the decimal places of the original values. 52.13 had only 2 digits past the decimal point so the answer can only contain 2 significant numbers after the decimal point which would be 53.88 g

Explanation:

7 0

3 years ago