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Tanya [424]
3 years ago
9

Which would result in radioactive decay? Check all that apply

Chemistry
2 answers:
Gekata [30.6K]3 years ago
4 0

6+2=115 and its good it took test



Leona [35]3 years ago
3 0

Answer:

its 2, 3. 5

Explanation:

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11. The modern periodic table is arranged in order of increasing atomic
Pani-rosa [81]

Answer:

number. so the option is c

6 0
2 years ago
Read 2 more answers
At 25.0°c, a solution has a concentration of 3.179 m and a density of 1.260 g/ml. the density of the solution at 50.0°c is 1.249
oksano4ka [1.4K]

Answer: -

3.151 M

Explanation: -

Let the volume of the solution be 1000 mL.

At 25.0 °C, Density = 1.260 g/ mL

Mass of the solution = Density x volume

= 1.260 g / mL x 1000 mL

= 1260 g

At 25.0 °C, the molarity = 3.179 M

Number of moles present per 1000 mL = 3.179 mol

Strength of the solution in g / mol

= 1260 g / 3.179 mol = 396.35 g / mol (at 25.0 °C)

Now at 50.0 °C

The density is 1.249 g/ mL

Mass of the solution = density x volume = 1.249 g / mL x 1000 mL

= 1249 g.

Number of moles present in 1249 g = Mass of the solution / Strength in g /mol

= \frac{1249 g}{396.35 g/mol}

= 3.151 moles.

So 3.151 moles is present in 1000 mL at 50.0 °C

Molarity at 50.0 °C = 3.151 M

7 0
2 years ago
Please help! 20 Points!
Pani-rosa [81]

Answer: YOU MAY FIND THE ANSWER IF YOU SEARCH THE WEB.

Explanation:

7 0
3 years ago
What is the molecular formula of a compound with the empirical formula
ipn [44]

Answer:  C_2H_2O_2

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

The empirical formula is CHO

The empirical weight of CHO = 1(12)+1(1)+1(16)= 29 g.

The molecular weight = 60 g/mole

Now we have to calculate the molecular formula:

n=\frac{\text{Molecular weight}}{\text{Equivalent weight}}=\frac{60}{29}=2

The molecular formula will be=2\times CHO=C_2H_2O_2

Thus molecular formula will be C_2H_2O_2

5 0
3 years ago
How does the temperature of absolute zero relate to the kinetic energy of a substance's molecules?
skelet666 [1.2K]

Answer:

I will say D. The molecules become arranged into regular cubic arrangement. but i'm not 100% sure

Explanation:

8 0
2 years ago
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