2 years ago

What's the atomic weight of salt ?

Chemistry

2 answers:

Brrunno [24]2 years ago

5 0

One formula unit of sodium chloride (NaCl) would weigh 58.44 amu

marta [7]2 years ago

4 0

Answer:

58.44 g/mol

Explanation:

58.44 g/mol

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determine if the pennies are made of pure copper by comparing the density with that of the pure copper

zhenek [66]

Answer:

The pennies are NOT made of pure copper since the obtained density is 9.29 g/cm3 which is greater than the density of copper which is 8.96 g/cm3.

Explanation:

4 0

2 years ago

In which of the following compounds is the mass ratio of chromium to oxygen closest to 1.62 to 1.00?

ohaa [14]

Answer:

The answer to your question is letter A

Explanation:

Data

Mass ratio 1.62 to 1.00

Atomic mass Cr = 52 g

Atomic mass O = 16

Process

1.- Calculate the proportion Chromium to Oxygen to each possible solutions

a) CrO₃ = $\frac{52}{16 x 3} = \frac{52}{48} = 1.08$

b) CrO₂ = $\frac{52}{16 x 2} = \frac{52}{32} = 1.63$

c) CrO = $\frac{52}{16} = 3.25$

d) Cr₂O = $\frac{52 x 2}{16} = \frac{104}{16} = 6.5$

8 0

2 years ago

Changes between a liquid and gas exsample

exis [7]

Here are some examples:-

Water → water vapour

bromine → bromine gas

6 0

2 years ago

Solve for b, when c= a/b and a = 5.8 and c= 7.4

vova2212 [387]

Answer:

b= 42.92

Explanation:

5.8 x 7.4 = 42.92

4 0

2 years ago

in a typical person, the level of glucose is about 85 mg/ 100 mL of blood. if an average body contains about 11 pt of blood, how

Vanyuwa [196]

Let's note that 1 pint = 473.1765 mL, so 11 pints should be 5204.9415 mL.

We make a proportion out of the word problem

(85 mg glucose/ 100 mL) times (1 g/ 1000 mg) = 4.4242 grams of glucose

5 0

2 years ago