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Ivanshal [37]
3 years ago
14

15 POINTS!!!

Chemistry
2 answers:
gladu [14]3 years ago
8 0

<u>At 60° C</u>. The higher the temperature, the higher the kinetic energy.

lawyer [7]3 years ago
7 0

<em>Answer:</em>

  • At 60 centigrade, the kinetic energy of the substance will be greatest.

<em>Explanation:</em>

As we know, the kinetic energy of substance is directly proportional to Temperature.

The total Kinetic energy can be calculated as follow

                                                K.E = 3/2 n.R.T

From the equations, it is cleared that Temperature is directly proportional to temperature.

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If a container contains 3.5 moles and has a volume of 1.5 L, then what volume is it when it contains 8 moles? *
Lilit [14]
Volume would be 3.4 L
8 0
3 years ago
Help please
Mars2501 [29]

Answer:

electron cloud charge of manganese=-5

Explanation:

atomic number=number of elecron +neutron number

DATA

Neutron NO.=30

atomic NO.=25

e=?

A=e+n

25=e+30

e=25-30

e= -5

6 0
2 years ago
Consider the following reaction: 2{\rm{ N}}_2 {\rm{O(}}g)\; \rightarrow \;2{\rm{ N}}_2 (g)\; + \;{\rm{O}}_2 (g)
fredd [130]

Answer:

a. 5.9 × 10⁻³ M/s

b. 0.012 M/s

Explanation:

Let's consider the following reaction.

2 N₂O(g) → 2 N₂(g) + O₂(g)

a.

Time (t): 12.0 s

Δn(O₂): 1.7 × 10⁻² mol

Volume (V): 0.240 L

We can find the average rate of the reaction over this time interval using the following expression.

r = Δn(O₂) / V × t

r = 1.7 × 10⁻² mol / 0.240 L × 12.0 s

r = 5.9 × 10⁻³ M/s

b. The molar ratio of N₂O to O₂ is 2:1. The rate of change of N₂O is:

5.9 × 10⁻³ mol O₂/L.s × (2 mol N₂O/1 mol O₂) = 0.012 M/s

4 0
3 years ago
1.) What coefficient values will balance the reaction shown? CH4 + O2 ?CO2 + H2O
Varvara68 [4.7K]

Answer:

It's simpler than most questions :)

Explanation:

1) B

2) B

3) D

4) A

5) A

Hope this will help :)

5 0
3 years ago
Questions and answers about isotopes grade 8 I need this for a PowerPoint exam projects
DanielleElmas [232]

Answer:

Question: A patient is diagnosed with a damage in the thyroid gland.

Which isotope is used to treat the patient?

Option:

A. Copper-64

B. Cobalt-60

C. Carbon-14

D. Iodine-131

Correct answer : D. Iodine-131

Question: Give the definition of isotopes.

Answer : Isotopes is the atoms of elements with the same proton number but different number of neutrons.

3 0
1 year ago
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