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3 years ago

What is the density if the weight is 40.5 and the volume is 15.0

Chemistry

1 answer:

Stolb23 [73]3 years ago

5 0

This is what my teacher did (example). So if the weight was 40.5 and the volume was 15.0:
<span>
d = 40.5 g / 15.0 mL (that means you divide it)d = 2.70 g/mL
</span>

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How to do dots and cross diagrams

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Answer:

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3 years ago

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3 years ago

Applying the rules of significant figures, which of the following would be the correct value for the density of a substance whic

lilavasa [31]

16 g/ml

<h3>Further explanation</h3>

Given

mass = 32.40 g

volume = 2.0mL

Required

Density

Solution

Density is a quantity derived from the mass and volume

Density is the ratio of mass per unit volume

Density formula:

$\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}$

ρ = density

m = mass

v = volume

Input the value :

ρ = 32.40 g / 2.0 ml

ρ = 16.2 g/ml

Rules for division: The least number of significant figures in the problem determines the number of significant figures in the answer.

32.40 = 4 sig.fig

2.0 = 2 sig fig

The answer must be 2 sig fig

So the answer = 16 g/ml

6 0

3 years ago

If a student has 50.0 mL of a solution of 0.100 M HCI, how could they make a solution with a concentration of 0.0500 M?

vfiekz [6]

Answer:

100 ml

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50(0.100)=0.0500(v2)

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3 years ago

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= $\frac{1.9299 g}{78.112 g/mol}$

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So, according to ideal gas equation PV = nRT

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8 0

3 years ago