3 years ago

8

1 answer:

6 0

The three subatomic particles are protons, electrons, and neutrons. Protons and Neutrons are found in the nucleus of the atom. The electrons are found in a cloud that is orbiting all around the nucleus.
The neutron is found in the nucleus
The electron is found outside the nucleus
The proton is found in the nucleus

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Find the hydroxide ion concentration of a HBr solution with a pH of 4.75

Sunny_sXe [5.5K]

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then do 10^-9.25 = 5.62x10^-10 OH- concentration

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4 years ago

Write the balanced chemical equation for the reaction of glucose (C6,H12,O6) with oxygen gas to produce carbon dioxide gas

Fittoniya [83]

Answer:

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Calculate the χacetone and χcyclohexane in the vapor above the solution. p°acetone = 229.5 torr and p°cyclohexane = 97.6 torr.

Ulleksa [173]

First calculate the mole fraction of each substance:
Acetone: 2.88 mol ÷ (2.88 mol + 1.45 mol) = 0.665
Cyclohexane: 1.45 ÷ (2.88 mol + 1.45 mol) = 0.335
Raoult's Law: P(total) = P(acetone) · χ(acetone) + P(cyclohexane) · χ(cyclohexane).
P(total) = 229.5 torr · 0.665 + 97.6 torr · 0.335
P(total) = 185.3 torr
χ for acetone: 229.5 torr · 0.665 ÷ 185.3 torr = 0.823
χ for cyclohexane: 97.6 torr · 0.335 ÷ 185.3 torr = 0.177

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3 years ago

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What element has the same number valence electrons as strontium?

Arturiano [62]

Answer:

Beryllium

Explanation:

They are in the same group

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