2 years ago

Which statements describe Rutherford’s model of the atom? Select all that apply.

Chemistry

1 answer:

andreyandreev [35.5K]2 years ago

8 0

The atom has a tiny and heavy nuclues as well-know gold foil.

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How many miles of lead are equal to 9.51 x 10^3 g Pb?

Lemur [1.5K]

Molar mass Pb = 207.2 g/mol

1 mole Pb ------------- 207.2
? mole Pb ------------ 9.51 x 10³

moles = 9.51 x 10³ * 1 / 207.2

moles = 9.51 x 10³ / 207.2

= 45.89 moles

hope this helps!

7 0

3 years ago

The less mass in a given volume of air the

DiKsa [7]

Answer:

The less mass in a given volume of air the less dense the air is going to be.

7 0

2 years ago

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A chemistry instructor provides each student with 8 test tubes at the beginning of the year. If there are 28 students per class,

Ann [662]

Answer :8*28=224
224*3=672

7 0

3 years ago

Is water a mixture or compound explain 4 points

elena-s [515]

Answer:

In my opinion, water is a compound.

Explanation:

Water is mixed from Oxygen(O) and Hydrogen(H) and they cannot be splitted.

Sorry if there any mistakes

6 0

3 years ago

Find the number of grams in 16.95 mol hydrogen peroxide (H2O2). Round your

Feliz [49]

Answer: There are 576.46 number of grams present in 16.95 mol hydrogen peroxide $(H_{2}O_{2})$ .

Explanation:

Number of moles is defined as the mass of substance divided by its molar mass.

The molar mass of $H_{2}O_{2}$ is 34.01 g/mol. Hence, mass of hydrogen peroxide present in 16.95 moles is calculated as follows.

$Moles = \frac{mass}{molarmass}\\16.95 mol = \frac{mass}{34.01 g/mol}\\mass = 576.46 g$

Thus, we can conclude that there are 576.46 number of grams present in 16.95 mol hydrogen peroxide $(H_{2}O_{2})$ .

3 0

2 years ago