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3 years ago

What type of isotope undergoes radioactive decay?

Chemistry

2 answers:

Firdavs [7]3 years ago

8 0

Answer:

I picked A: one that has a nucleus with the same number of protons and neutrons

Explanation:

On edg

jeka57 [31]3 years ago

5 0

Answer:

i think the answer is a

Explanation:

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The pen on seismograph swings freely.

Sever21 [200]

This statment is false, the pen on a seismograph does not swing freely.

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3 years ago

Which term refers to the speed at which reactants are converted into products?

shutvik [7]

Answer:

activation energy hope this is right

6 0

3 years ago

I will not stop asking until someone answer hurry up already

Reil [10]

Answer:

Gravity.

Explanation:

4 0

3 years ago

How many moles of hcl are required to neutralize aqueous solutions of these bases? 0.03 mol koh?

oksano4ka [1.4K]

The moles of HCl are required to neutralized aqueous solution of the 0.03 KoH

KOH + HCl = KCl + H2O

by use mole ratio between KOH to HCl which is 1:1 the moles Of HCl is also 0.03 moles

5 0

3 years ago

A solution is created by dissolving 13.0 grams of ammonium chloride in enough water to make 295 mL of solution. How many moles o

Masja [62]

Answer:

(a) Moles of ammonium chloride = 0.243 moles

(b) $Molarity_{ammonium\ chloride}=0.824\ M$

Explanation:

(a) Mass of ammonium chloride = 13.0 g

Molar mass of ammonium chloride = 53.491 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{13.0\ g}{53.491\ g/mol}$

<u>Moles of ammonium chloride = 0.243 moles</u>

(b) Moles of ammonium chloride = 0.243 moles

Volume = 295 mL = 0.295 L ( 1 mL = 0.001 L)

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

$Molarity_{ammonium\ chloride}=\frac{0.243}{0.295}$

$Molarity_{ammonium\ chloride}=0.824\ M$

Volume = ?

Molarity = 0.824 M

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

$0.824\ M=\frac{0.0500}{Volume}$

<u>Volume = 0.05 / 0.824 L = 0.06068 L = 60.68 mL</u>

6 0

3 years ago