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LenaWriter [7]
3 years ago
9

Please help thank you

Chemistry
1 answer:
EleoNora [17]3 years ago
4 0

Answer:

f. same number of protons

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How many moles are in 153’pp grams of KClO3
katen-ka-za [31]

Answer:

n = 1.24 moles

Explanation:

Given that,

Mass = 153 grams

Molar mass of KClO₃ = 122.55 g/mol

We need to find the number of moles.

We know that,

No. of moles = given mass/molar mass

So,

n=\dfrac{153}{122.55 }\\\\n=1.24

So, there are 1.24 moles in 153 g of KClO₃.

4 0
3 years ago
a rectangular piece of aluminum foil measures 13.72 cm x 8.63 cm and has a mass of 3.1 g. Find how thick it is
Leona [35]

The two dimensions of aluminum foil are given 13.72 cm and 8.63 cm respectively with mass  3.1 g.

The density of aluminum is 2.7 g/cm^{3}. It is defined as mass per unit volume thus, volume of aluminum can be calculated as follows:

V=\frac{m}{d}

Putting the values.

V=\frac{3.1 g}{2.7 g/cm^{3}}=1.148 cm^{3}

The volume of cuboid is l\times b\times h, the length and breadth are given, height can be calculated as follows;

h=\frac{V}{l\times b}

Putting the values,

h=\frac{1.148 cm^{3}}{(13.72 cm)(8.63 cm)}=0.009695 cm

Or, approximately 9.7\times 10^{-3}cm

Therefore, thickness of aluminum foil is 9.7\times 10^{-3}cm

7 0
3 years ago
Is a mixture being separated into two elements a chemical change
Pachacha [2.7K]
Depends on how you separate it

7 0
3 years ago
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Can anyone please help with this!!
erica [24]

Answer:

Stronger dipole-dipole

Explanation: all molecules exert ldf. Dipole-dipole interactions are very strong in H2O because the H makes temporary bonds with the O from another molecule .

7 0
3 years ago
I BET NO ONE KNOWS THIS 10. Which of the following words is closest to the same meaning as hypothesis?
Ivanshal [37]

Answer:

conclusion.

Explanation:

5 0
3 years ago
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