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Orlov [11]
3 years ago
9

Its chemistry: isotopes, elements, due Wednesday thanks

Chemistry
1 answer:
bulgar [2K]3 years ago
4 0

Answer:

Science, Science, Science!

Explanation:

Reeeeeeeeeeeeeee

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A force that exists throughout the universe. Earth's will pull on you at a rate of 9.8 m/s2 if you ignore friction.
Fiesta28 [93]

Answer:

Your answer is Gravity,

The Earth's gravity pulls things at a rate of 9.8m/s² (varying depending upon one's distance). according to Newton, "all mass in the universe exerts some gravitational force". you are pulling on Sagitarios A* (the black hole at the center of the milky way galaxy) right now, and it is also pulling on you.

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3 0
3 years ago
Why does aluminium oxide (Al2O3) have a higher melting point than sodium oxide (Na2O)?
Lilit [14]

Al2O3 has a higher melting point than Na2O. This is because the ionic bond between Al3+ ions and O2- ions is stronger than that between Na+ and O2-. The charge on the Al3+ ion is larger than that of the Na+ ion

5 0
4 years ago
Will mark as Brainliest.
viktelen [127]
B) Bohr's Atomic Model
8 0
3 years ago
A sample of Manganese (II) chloride has a mass of 19.8 grams before heating, and 12.6 grams after heating until all the water is
IRINA_888 [86]

Answer:

no. of water molecules associated to each molecule of MnCl_2 = 4

Explanation:

Mass of MnCl_2 before heating = 19.8 g

Mass of MnCl_2 after heating = 12.6 g

Difference in mass of MnCl_2 before and after heating

                                 = 19.8 - 12.6 = 7.2 g

Difference in mass corresponds to mass of water driven out.

Molar mass of water = 18 g/mol

No. of moles of water = \frac{7.2}{18} = 0.4\ mol

Mass of MnCl_2 obtained after heating is mass of anhydrous MnCl_2.

Mass of anhydrous MnCl_2 = 12.6 g

Molar mass of MnCl_2 = 125.9 g/mol

No. of mol of anhydrous MnCl_2 = \frac{125.9}{125.9} = 0.1\ mol

so,

0.1 mol of MnCl_2 have 0.4 mol of water

1 mol of MnCl_2 will have = \frac{0.4}{0.1} =4\ mol

Hence, no. of water molecules associated to each molecule of MnCl_2 = 4

5 0
3 years ago
Many people are proponents of using nuclear power instead of burning coal to generate electricity. What is an environmental adva
nirvana33 [79]

Answer:

C) Less carbon dioxide would be released into the atmosphere.

3 0
3 years ago
Read 2 more answers
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