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kap26 [50]
3 years ago
6

Write the ions that result from the dissociation of na2s

Chemistry
1 answer:
Sveta_85 [38]3 years ago
5 0
2Na^+ and S^2-

(sodium cation and sulfide anion)
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Is frying an egg a physical or chemical change
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Chemical change. The heat from frying an egg causes the egg's protein to change permanently in texture and in appearance through a process. 
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What is the mass of an object if its height is 10 meters above ground and its gravitational potential energy (GPE) is 3920 Joule
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Answer:

40

Explanation:

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3920/10/9.8

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Explain why even though it may be sunny outside its not as warm during the summer ​
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3 years ago
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Calculate the molarity of a solution of Nach if it contains 7.2.g Nach in 100.0 mL of solution. andver: m Nach . .
Norma-Jean [14]

Answer:

1.23 M

Explanation:

Molarity of a substance , is the number of moles present in a liter of solution .

M = n / V

M = molarity  

V = volume of solution in liter ,

n = moles of solute ,

Moles is denoted by given mass divided by the molecular mass ,  

Hence ,  

n = w / m

n = moles ,  

w = given mass ,  

m = molecular mass .

From the question ,

w = given mass of NaCl = 7.2 g

As we know , the molecular mass of NaCl = 58.5 g/mol

Moles is calculated as -

n = w / m  =  7.2 g / 58.5 g/mol = 0.123 mol

Molarity is calculated as -

V = 100ml = 0.1 L            (since , 1 ml = 1/1000L )

M = n / V  =  0.123 mol / 0.1 L = 1.23 M

5 0
3 years ago
Chemical Name for Rb2S
Westkost [7]

Answer:

Rubidium Sulfide

Explanation:

The chemical name for Rb2S is Rubidium Sulfide

6 0
3 years ago
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