2 years ago

Question 1 of 30

Chemistry

2 answers:

Leno4ka [110]2 years ago

7 0

Answer:

Explanation:

Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital. This results in a larger atomic radius.

Ksivusya [100]2 years ago

3 0

The answer will be A

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The pH of a solution in which the concentration of H+ is 0.010M will be:

shusha [124]

B: 2

If it's right plz give brainliest lol <3

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What is the formula weight (amu) of the molecule H2O? Use atomic masses of H and O as 1.008 amu and 16.00 amu respectively. Repo

vaieri [72.5K]

Answer:

Formula weight of H₂O molecule is 18.02 amu.

Explanation:

Given data:

Formula weight of H₂O = ?

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"It is the sum of all the atomic weight of atoms present in given formula"

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creativ13 [48]

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3 years ago

An activated complex has

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The answer is D higher potential energy and is unstable

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2 years ago

Propane (c3h8) is burned in oxygen to produce carbon dioxide and water. the heat of combustion of propane is -2012 kj/mole. how

Olegator [25]

$C_{3} H_{8} + 5 O_{2} ---\ \textgreater \ 3CO_{2} +4H_{2}O (-2012 \frac{kJ}{mol} )


3 mol 10 mol


C_{3}H_{8} is /excess /reactant

because 3 mol propane require 15 mol oxygen (by reaction)

5 mol oxygen ---1 mol propane, so

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so 

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Correct answer is number 4.


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3 years ago