2 years ago

Help me with this question please

Chemistry

1 answer:

Natasha_Volkova [10]2 years ago

7 0

Answer:

I dont know sorry i will try my best htough

Explanation:

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How many grams of sodium do I need to react with chlorine to make 20g of sodium chloride

NikAS [45]

Explanation:

Na=23

cl2=35.5×2=71

NaCl=23+35.5=58.5

2Na + Cl2== 2NaCl

2. : 1

20/23=2(x)/71

(71×20)/(23×2)=x

x=30.87g

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2 years ago

Write formulas for compounds formed from these pairs of ions.

hram777 [196]

Answer:

a. (NH4)2SO3

b. Ca3(PO4)2

Explanation:

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3 years ago

How many molecules of o2 are required to form 13.5 g of water vapor?

Viefleur [7K]

13.5g H2O = 13.5/(2+16) = 0.75 mol H2O

Since for every O2 you can form 2 H2O, 0.75/2 = 0.375 mol of O2 will be needed to form 0.75 mol of H2O.

Converting from moles to molecules:

0.375 mol * 6.022 * 10^23 = 2.26 * 10 ^23 molecules

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3 years ago

What is an ion formed from two or more atoms called

Lapatulllka [165]

An iconic bond........

5 0

3 years ago

Find the density of an empty tissue box with a mass of 345 grams and a volume of 1125 cm3.

trasher [3.6K]

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume}$

From the question

mass of box is 345 g

volume = 1125 cm³

The density of the object is

$density = \frac{345}{1125} \\ = 0.3066666...$

We have the final answer as

Hope this helps you

4 0

3 years ago