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pogonyaev
4 years ago
7

A sample of ch4o with a mass of 32.0 g contains ________ molecules of ch4o.

Chemistry
1 answer:
ValentinkaMS [17]4 years ago
3 0
6.02 times 10 to the 23 power, which is Avogadros number 
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How many moles of ammonium sulfate can be from the reaction of 30.0 mol of NH3 with H2SO4 according to the following equation: 2
marysya [2.9K]

Answer:

15 moles of  ammonium sulfate would be formed from 30 moles of ammonia.

Explanation:

Given data:

Number of moles of ammonium sulfate formed = ?

Number of moles of ammonia = 30.0 mol

Solution:

Chemical equation:

2NH₃  +   H₂SO₄  →  (NH₄)₂SO₄

Now we will compare the moles of ammonium sulfate with ammonia.

                           NH₃           :           (NH₄)₂SO₄

                             2              :               1

                            30.0          :              1/2×30.0 = 15.0 mol

So 15 moles of  ammonium sulfate would be formed from 30 moles of ammonia.

7 0
3 years ago
a car is traveling at a speed of 55 mph the speed increased to 75 mph if the time needed to hange its speed is 4 seconds whats t
Savatey [412]

v = 75 mph = 33.52 m/s

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As water is cooled from 4º C to 0°C, its density
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Answer:

decreases

Explanation:

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4 years ago
Give an example of an element that would be expected to share similar chemical properties with beryllium, calcium, and strontium
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PLZ HELP! Give me a really (winner) good idea for a kids science fair! My little sister has to do one through my school and I ne
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