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Andrej [43]
3 years ago
11

What is the photoelectic effect

Chemistry
2 answers:
-BARSIC- [3]3 years ago
8 0

Answer:

When electrically charged particles are released from or within a material when it absorbs electromagnetic radiation.

Explanation:

I'm assuming you mean the photoelectric effect.

const2013 [10]3 years ago
5 0
Is this a multi choice question?????????????????????
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What is the noble-gas electron configuration for bromine?
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3 years ago
A 5.00 gram sample of magnesium sulfate hydrate (epsom salt) is heated in the lab to form anhydrous magnesium sulfate. After hea
Ostrovityanka [42]

Answer:

The answer to your question is  MgSO₄ 5H₂O

Explanation:

Data

mass of MgSO₄ = 2.86 g

mass of H₂O = 2.14 g (5 - 2.86)

Process

1.- Calculate the molecular mass of the compounds

MgSO₄ = 24 + 32 + (16 x 4) = 120

H₂O = 16 + 2 = 18

2.- Convert the grams obtain to moles

                        120 g of MgSO₄  --------------- 1 mol

                         2.8 g                  ----------------  x

                         x = (2.8 x 1)/120

                        x = 0.024 moles

                         18 g of H₂O --------------------- 1 mol

                         2.14 g           -------------------- x

                         x = (2.14 x 1)/18

                         x = 0.119

3.- Divide by the lowest number of moles

MgSO₄  = 0.024/0.024 = 1

H₂O = 0.119/ 0.024 = 5

4.- Write the molecular formula

                   MgSO₄5H₂O                        

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8 pints = 1 gallon

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4900 has 2 significant figures, so our final answer should have two. Your final answer is 1300 gallons.
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Answer:

A:force times an object displacement

Explanation:

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Which statement accurately compares the trends in atomic number and atomic mass in the periodic table
Tresset [83]

Answer: is C

Explanation:

Both the atomic mass and the atomic number increase from left to right

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