2 years ago

Find the "density" of a copper sample whose mass is 134.4 grams and whose volume is 15.0mL

Chemistry

1 answer:

Arisa [49]2 years ago

6 0

Answer: 8.96 g/mL

Work Shown:

density = mass/volume

density = (134.4 grams)/(15.0 mL)

density = (134.4/15.0) g/mL

density = 8.96 g/mL

This result is to 3 sig figs which is the smaller sig fig count when comparing the original values 134.4 and 15.0; so this means we don't have to do any rounding.

You might be interested in

What is the uppermost, horizontal area of a page?

Nookie1986 [14]

I think the answer is a and c

I

5 0

3 years ago

Question 2/5

Olegator [25]

B

A definite chemical composition means that all occurrences of that mineral have a chemical composition that varies within a specific limited range and the atoms that make up the mineral must occur in specific ratios.

7 0

2 years ago

A certain compound is made up of one sulfur atoms, three bromine atom, and one phosphorus atom. what is the chemical formula of

Alisiya [41]

Thiophosphoryl Bromide
PSBr₃

:•)

5 0

2 years ago

Read 2 more answers

How do you find a mole (i need an example) i hate chem pls help

galben [10]

Answer:

I'm pretty sure its just the mass of the sample divided by the molar mass

for example if I had like 7g of carbon and wanted to find the moles, I would divide the mass I have (7g) by the molar mass (the atomic mass value on your periodic table, in this case for carbon it would be 14g)

moles = $\frac{mass}{molarmass} = \frac{7}{14} = 0.5\ moles$

Hope this helped

6 0

1 year ago

Cells are the basic unit of life true or false

dusya [7]

True ! search it up on safari and it tells you that it’s true

4 0

2 years ago