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Lelechka [254]
3 years ago
6

List the properties of copper, sulfur and copper sulfide?

Chemistry
1 answer:
Y_Kistochka [10]3 years ago
7 0
The answer would be metal
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How to use molar mass
ruslelena [56]

Explanation:

the molar mass of a compound can be caucaleted by adding the standar atomic masses.

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3 years ago
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Who's good at chemistry? Maybe you can help me out?
Anvisha [2.4K]
Formula is Naf
charge is Flourine ion
symbol is ∨∨∨∨
hope that helped

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3 years ago
Why is the melting point of a network solid so high? How is this related to what a network solid is?
Alexxandr [17]
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4 0
3 years ago
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ycow [4]

Answer:

Heterogeneous

Explanation:

3 0
2 years ago
Joan’s initial nickel (II) chloride sample was green and weighed 4.3872 g. After the dehydration reaction and removal of excess
ANEK [815]

Answer:

a) yes, it was an hydrate

b) the number of waters of hydration, x = 6

Explanation:

a) yes it was an hydrate because the mass decreased after the process of dehydration which means removal of water thus some water molecules were present in the sample.

b) NiCl2. xH2O

mass if dehydrated NiCl2 = 2.3921 grams

mass of water in the hydrated sample = mass of hydrated - mass of dehydrated = 4.3872 - 2.3921 = 1.9951 g which represent the mass of water that was present in the hydrated sample.

NiCl2.xH2O

mole of dehydrated NiCl2 = m/Mm = 2.3921/129.5994 = 0.01846 mole

mole of water = m/Mm = 1.9951/18.02 = 0.11072 mole

Divide both by the smallest number of mole (which is for NiCl2) to find the coefficient of each

for NiCl2 = 0.01846/0.01846 = 1

for H2O = 0.11072/0.01846 = 5.9976 = 6

thus the hydrated sample was NiCl2. 6H2O

4 0
3 years ago
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