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S_A_V [24]
3 years ago
9

Can someone please answer this and if you dont know dont answer (:

Chemistry
2 answers:
anyanavicka [17]3 years ago
8 0

Answer:  1- Alkali metals

                2- Noble gases

                3- Halogens

Explanation:

Softa [21]3 years ago
8 0

Answer:

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Explanation:

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What happens to the energy of gas particles when an elastic collision takes place?
julia-pushkina [17]
The answer is D because there is no forces of attraction or repulsion between gas particles .
3 0
2 years ago
Read 2 more answers
(Physical Science)
Vera_Pavlovna [14]
Alkaline earth metals
4 0
2 years ago
A certain radioactive nuclide has a half life of 1.00 hour(s). Calculate the rate constant for this nuclide. s-1 Calculate the d
Karo-lina-s [1.5K]

Answer:

k= 1.925×10^-4 s^-1

1.2 ×10^20 atoms/s

Explanation:

From the information provided;

t1/2=Half life= 1.00 hour or 3600 seconds

Then;

t1/2= 0.693/k

Where k= rate constant

k= 0.693/t1/2 = 0.693/3600

k= 1.925×10^-4 s^-1

Since 1 mole of the nuclide contains 6.02×10^23 atoms

Rate of decay= rate constant × number of atoms

Rate of decay = 1.925×10^-4 s^-1 ×6.02×10^23 atoms

Rate of decay= 1.2 ×10^20 atoms/s

8 0
2 years ago
How many grams are 3.01 × 1023 molecules of CuSO4?
zvonat [6]
Answer is: 79.8 grams of copper(II) sulfate.
N(CuSO₄) = 3.01·10²³; number of molecules.
n(CuSO₄) = N(CuSO₄) ÷ Na.
n(CuSO₄) = 3.01·10²³ ÷ 6.02·10²³ 1/mol.
n(CuSO₄) = 0.5 mol; amount of substance.
m(CuSO₄) = n(CuSO₄) · M(CuSO₄).
m(CuSO₄) = 0.5 mol · 159.6 g/mol.
m(CuSO₄) = 79.8 g; mass of substance.
M - molar mass.
4 0
3 years ago
Name the type of equation then balance. Sn,(PO2)2 + Fe(CIO): - Sn(CIO3)2 + FePO,​
erastovalidia [21]

Answer:

ionic compond

Explanation:

Sn(ClO3)4

5 0
2 years ago
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