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Elena L [17]
3 years ago
8

Please help me will reward Brainly

Chemistry
2 answers:
Damm [24]3 years ago
5 0
Is it carbon dioxide
zhannawk [14.2K]3 years ago
5 0
The answer is Carbon Dioxide (Co2).
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A student prepares a weak acid solution by dissolving 0.2000 g HZ to give 100. mL solution. The titration requires 33.5 mL of 0.
nexus9112 [7]

Answer:

a)M=0.20/(0.335*0.1025)= 0.20/ 0.034 = 5.88 g/mol

b) if 0.100g is used instead of 0.200g

M = 0.1 / 0.034 = 2.94  hence the molar mass will be too low

Explanation:

0.2000 gHZ gives  100ml acid solution

33.5 ml of 0.1025 M NaOH  is required to prepare it

the moles = mass / molar mass

mass = 0.200 gHZ

moles = 0.0335*100 * 0.1025 = 0.034

therefore molar mass = mass / moles

                                  M=0.20/(0.335*0.1025)= 0.20/ 0.034 = 5.88

if 0.100g is used instead of 0.200g

M = 0.1 / 0.034 = 2.94  hence the molar mass will be too low

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2 years ago
After one half life ___% of the atoms will change to a stable
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Answer:

the answer is 30% if the atoms will change to a stable

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2 years ago
1. Calculate the [H] in a solution that has a pH of 9.88.
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The answer to the question is D.
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Which atom would be expected to have a half-filled <br> 3d subshell?
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The elestron configuration would show this is 25 electrons

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