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attashe74 [19]
3 years ago
10

PLSSS ILL MARK YOU AS BRAINLIEST!!!!

Chemistry
1 answer:
Fynjy0 [20]3 years ago
8 0

Answer:

Main-sequence stars, including the sun, form from clouds of dust and gas drawn together by gravity. ... The core that is left behind will be a white dwarf, a husk of a star in which no hydrogen fusion occurs. Smaller stars, such as red dwarfs, don't make it to the red giant state.

Explanation:

good luck i hope this helped!

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If the amount of Adams if each type on the left and right sides of a reaction difference what must be done to balance it
Ivanshal [37]

Hey there,

Your answer would be

Coefficients are placed in front of the reactants and/or products

Hope this helps,

<h2>- <em>Mr. Helpful</em></h2>

8 0
3 years ago
In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly?
sveta [45]

Answer:

A.

Explanation:

The number of the them will result in A.

7 0
2 years ago
Which one of these are correct?
Sergio [31]

The correct answer is the one in the middle. Mixing food coloring and water

3 0
3 years ago
[15 Points, Stoichiometry and Gases]
KiRa [710]

The reaction is

CaC₂(s) + 2H₂O (l) -----> Ca(OH)₂ (s) + C₂H₂ (g) ​

As we have data of gas ethyne (or acetylene), C₂H₂

We can calculate the moles of acetylene and from this we can estimate the mass of calcium carbide taken

the moles of acetylene will be calculated using ideal gas equation

PV =nRT

R = gas constant = 0.0821 Latm/molK

T = 385 K

V = volume = 550 L

P = Pressure = 1.25 atm

n = moles = ?

n = PV /RT = 1.25 X 550 / 0.0821 X 385 = 21.75 mol

As per balanced equation these moles of acetylene will be obtained from same moles of calcium carbide

moles of calcium carbide = 21.75mol

molar mass of CaC₂ = 40 + 24 = 64

mass of CaC₂ = moles X molar mass = 21.75 X 64 = 1392g

6 0
3 years ago
Read 2 more answers
A rock dropped Into a glass of water ralses the water level
asambeis [7]

Answer:

You can infert that it has a mass of 40 grams.It also has desnity of 40 grams per millilieter.

Explanation:

7 0
3 years ago
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