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julsineya [31]
4 years ago
15

What is the state of matter for the outer core?

Chemistry
1 answer:
Molodets [167]4 years ago
8 0
Oqmsbdhejwkmxncnndsnxnskks
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What is the empirical formula for a substance that contains 3.730% hydrogen, 44.44% carbon, and 51.83% nitrogen by mass?\?
Vlada [557]

Given data:

Hydrogen (H) = 3.730 % by mass

Carbon (C) = 44.44%

Nitrogen (N) = 51.83 %

This means that if  the sample weighs 100 g then:

Mass of H = 3.730 g

Mass of C = 44.44 g

Mass of N = 51.83 g

Now, calculate the # moles of each element:

# moles of H = 3.730 g/ 1 g.mole-1 = 3.730 moles

# moles of C = 44.44/12 = 3.703 moles

# moles of N = 51.83/14 = 3.702 moles

Divide by the lowest # moles:

H = 3.730/3.702  = 1

C = 3.703/3.702 = 1

N = 3.702/3.702 = 1

Empirical Formula = HCN

3 0
3 years ago
Why ddo all collisions between reactant molecules not lead to reaction.
jok3333 [9.3K]

Answer:

The colliding molecules need to possess certain energy which is greater than the activation energy Ea and proper orientation.

<h3>Not all collisions result in a chemical reaction because not all collisions have the have sufficient amount of energy or have the appropriate activation energy. Nor do they all have this correct orientation. Molecules need to collide in such a way that they're oriented, so the correct bonds could break in. The correct bonds conform. And then, of course, they need to have sufficient activation energy in order to initiate the breaking of the bonds.</h3>

<h3>Hope this helps please let me know If I'm wrong.</h3>
7 0
2 years ago
What is the mass (in grams) of 5.00 L of NH₃ at STP?
kupik [55]

Answer:

3.79 grams

Explanation:

22.4= STP volume .          Molar mass of NH3=17.031

5.00 NH3 × (1 mol/22.4 L) =0.223

convert to grams->

0.223× 17.031= 3.79

5 0
3 years ago
Use the periodic table to determine which of the
sveticcg [70]

Answers :

B , C

Explanation :

[ Correct on Ed 2020 ]

3 0
4 years ago
Which of the following are phase changes? Select all that apply.
Korvikt [17]
The answer is Liquid freezing
6 0
3 years ago
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