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Bas_tet [7]
3 years ago
15

I need these done please

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

Answer:

A, it is metal oxide

Likurg_2 [28]3 years ago
5 0
A is metal oxide jdjdjdh
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inessss [21]
30 grams of CO2 … that’s the answer but brainly wants 20 words

4 0
2 years ago
Why did evaporation cause the temperature to drop for each liquid? Explain exactlywhat happens on a molecular level to the parti
erik [133]

Explanation:

The conversion of the liquid to the vapor below boiling temperature of liquid is called evaporation.

Each molecule in liquid phase is attracted to other molecules in liquid by the intermolcular forces of attraction. When the process of evaporation starts, the molecules has to change the phase from the liquid to vapor for which they have to break all these interaction so that they can escape. The molecules with sufficient energy to do so only can do this. These molecules with high energy leave and remaining molecules are ones which did not have the enough energy to evaporate. Thus, average kinetic energy of molecules in liquid left behind is lower than it was before. <u>So, evaporation is a cooling process because heat of the molecules was used up for breaking hotter molecules out into gas phase and the left ones are cooled. </u>

4 0
3 years ago
What kind of intermolecular forces act between an oxygen molecule and a neon atom?
zepelin [54]

Answer:

London Dispersion forces

8 0
3 years ago
Which statement below can NOT
alexandr402 [8]

Answer:

the answer is B:

Explanation:

I hope it help.

6 0
3 years ago
What is the specific heat of a substance if 1560 cal are required to raise the temperature of a 312-g sample by 15°C?
Oksanka [162]
The specific heat capacity  the substance is calculated  using  the below formula

Q(heat) = Mc delta T
Q =1560  cal
m(mass) 312 g
delta T (change in temperature ) = 15 c
C= specific heat capacity=?

by making c the subject of the formula 
c=Q/m delta T
= 1560  cal/ 312g x 15 c = 0.33 cal/g/c (answer B)


8 0
3 years ago
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