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3 years ago

For the following isotopes that have missing information, fill in the missing information to complete the notation: 34 14X

Chemistry

1 answer:

krok68 [10]3 years ago

5 0

Answer:

For the following isotopes that have missing information, fill in the missing information to complete the notation: 34 14X answer- 34/14 Si

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Write the formulas for the ionic compounds formed by the following:

PSYCHO15rus [73]

1. KI

2. AlBr₃

3. CsNO₃

4. Al₂(CO₃)₃

Explanation:

1. potassium (K⁺) iodine (I⁻) - KI

2. aluminium (Al³⁺) bromine (Br⁻) - AlBr₃

3. caesium (Cs⁺) nitrate (NO₃⁻) - CsNO₃

4. aluminum (Al³⁺) carbonate (CO₃²⁻) - Al₂(CO₃)₃

Learn more about:

formulas for the ionic compounds

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3 years ago

A flask with a volume of 3.16 l contains 9.33 grams of an unknown gas at 32.0°c and 1.00 atm. What is the molar mass of the gas?

Inessa05 [86]

Answer:

73.88 g/mol

Explanation:

For this question we have to keep in mind that the unknown substance is a gas, therefore we can use the ideal gas law:

$PV=nRT$

In this case we will have:

P= 1 atm

V= 3.16 L

T = 32 ªC = 305.15 ºK

R= 0.082 $\frac{atm*L}{mol*K}$

n= ?

So, we can solve for "n" (moles):

$1~atm*3.16~L~=~n*0.082~\frac{atm*L}{mol*K}*305.15~K$

$n=\frac{1~atm*3.16~L~}{0.082~\frac{atm*L}{mol*K}*305.15~K}$

$n=0.126~mol$

Now, we have to remember that the molar mass value has "g/mol" units. We already have the grams (9.33 g), so we have to divide by the moles:

$molar~mass=\frac{9.33~grams}{0.126~mol}$

$molar~mass=73.88\frac{grams}{mol}$

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3 years ago

When a scientific investigation runs for several years, which is most likely true?

Bingel [31]

Answer:

1. Many different hypotheses will be tested.

Explanation:

Scientists test every hypothesis they make for their investigation, before moving onto bigger conclusions.

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4 years ago

Read 2 more answers

Who discovered atomic structure

Yuliya22 [10]

John Dalton

Although the concept of the atom dates back to the ideas of Democritus, the English meteorologist and chemist John Dalton formulated the first modern description of it as the fundamental building block of chemical structures.

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3 years ago

List three examples of high energy waves that are harmful to living things:

lord [1]

UV rays, gamma rays, and x rays
Hope this help

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4 years ago