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grandymaker [24]
1 year ago
7

All of the following are physical properties except a. density b. colour c. reaction with oxygen d. melting point

Chemistry
2 answers:
Crank1 year ago
7 0
C! That’s a chemical change :)
denpristay [2]1 year ago
4 0

Answer:

C

Explanation:

a, b and d   are physical properties ..... the compound or element in question has not changed its identity

   c    when combined with oxygen, it has changed to a different compound via CHEMICAL property.

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What is the volume of a sample of ammonia gas (NH3) if it contains 0.23 moles?​
LekaFEV [45]

The volume of a sample of ammonia gas : 5.152 L

<h3>Further explanation</h3>

Given

0.23 moles of ammonia

Required

The volume of a sample

Solution

Assumed on STP

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

So for 0.23 moles :

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8 0
2 years ago
A sample of the compound magnesium oxide is synthesized as follows. 60. g of magnesium is burned and produces 100. g of magnesiu
Inga [223]

Answer:

30 g of magnesium would be combined with 20 g of oxygen. The law used solving this problem is the Lavoisier Law of conservation of mass.

Explanation:

If 60 g of magnesium combines with 40 g of oxygen to make 100 g of magnesium oxide, then 30 g of magnesium will combine with 20 g of oxygen to make 50 g of magnesium oxide.

This happens because in a chemical reaction there is no creation or descruction of atoms, only a rearrangement. Therefore, the mass of reactants should be equal to the mass of products.

The following equation represents the proportions of the substances:

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5 0
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What number minus 6 equals 58?
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Answer: 64

Explanation:

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Read 2 more answers
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