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MrRa [10]
3 years ago
9

Which type of decay does not involve the decaying atom's atomic number to change?

Chemistry
1 answer:
Reika [66]3 years ago
6 0

Answer:

c-gamma decay

Explanation:

In gamma decay, neither the atomic number or the mass number is changed

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Sewage is a liquid waste which causes<br> _________ and ________ pollution.
nadezda [96]

Answer:

Lake and River pollution?

Explanation:

5 0
3 years ago
Read 2 more answers
What is the mass of 1.71 ✕ 1023 molecules of h2so4?
Anuta_ua [19.1K]
The equation for calculating a mass is as follows:

m=n×M

Molar mass (M) we can determine from Ar that can read in a periodical table, and a number of moles we can calculate from the available date for N:

n(H2SO4)=N/NA

n(H2SO4)= 1.7×10²³ / 6 × 10²³

n(H2SO4)= 0.3 mole

Now we can calculate a mass of H2SO4:

m(H2SO4) = n×M = 0.3 × 98 = 27.8 g



7 0
3 years ago
What volume of a 0.155 M potassium hydroxide solution is required to neutralize 25.7 mL of a 0.388 M hydrobromic acid solution
vekshin1

Answer: Therefore, the volume of a 0.155 M potassium hydroxide solution  is 56.0 ml

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

According to the neutralization law,

n_1M_1V_1=n_2M_2V_2

where,

M_1 = molarity of HBr solution = 0.338 M

V_1 = volume of HBr solution = 25.7 ml

M_2 = molarity of KOH solution = 0.155 M

V_2 = volume of KOH solution = ?

n_1 = valency of HBr = 1

n_2 = valency of KOH = 1

1\times 0.338\times 25.7=1\times 0.155\times V_2

V_2=56.0ml

Therefore, the volume of a 0.155 M potassium hydroxide solution  is 56.0 ml

8 0
3 years ago
Lol someone help me with this
lozanna [386]

Answer:

Its saying how many electronics are in your house.

Explanation:

Such as a tablet or a tv.etc

7 0
3 years ago
Corrosive substances are rarely harmful to human skin. True or false?
maxonik [38]

False

The adjective corrosive means it will definitely harm the skin

8 0
3 years ago
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