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masya89 [10]
3 years ago
9

Which conclusion was drawn from the results ofthe gold foil experiment?(1) an atom is electrically neutral.(2) an atom is mostly

empty space.(3) the nucleus of an atom is negativelycharged.(4) the electrons in an atom are located inspecific shells.
Chemistry
1 answer:
damaskus [11]3 years ago
5 0
2) An atom is mostly empty space
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Please help me with this question
yKpoI14uk [10]

The mass of oxygen is 236.4 g.

Explanation:

To find the mass of oxygen in 325 g of carbon dioxide (CO₂) we follow the next algorithm.

First we calculate the molar weight of carbon dioxide:

molar weight of CO₂ = molar weight of carbon × 1 + molar weight of oxygen × 2

molar weight of CO₂ = 12 × 1 + 16 × 2 = 44 g/mole

Now we devise the following reasoning:

if in        44 g of CO₂ there are 32 g of oxygen

then in  325 g of CO₂ there are X g of oxygen

X = (32 × 325) / 44 = 236.4 g oxygen

Learn more about:

molar weight

brainly.com/question/9883301

#learnwithBrainly

6 0
3 years ago
BRAINLIEST TO CORRECT please answer part A, B, and C
Alenkinab [10]

Answer:

A

1. density and composition

2. seismic waves

3.mantle

B.

1. lithosphere

2. asthenosphere

3. mantle

4. outer core

5. inner core

C.

box a I think

8 0
3 years ago
List three properties you would expect the metal zinc to have
Natali5045456 [20]
Low melting point
Low boiling point
Electric conductor
7 0
4 years ago
Read 2 more answers
Write the balanced chemical equation for the following reaction. Also, classify the
tekilochka [14]

Answer:

Explanation:

Al2(SO4)3 + 3BaCl2 ====> 2AlCl3 + 3BaSO4

Sorry forgot to say that it is a double replacement. The Ba goes where there Aluminum is and the Aluminum goes where the Barium is.

The internal balance numbers come from the fact that the ions and complex ions have different valance numbers.

3 0
3 years ago
How many atoms are represented in 28 grand of sodium
Nady [450]
The molar mass of sodium is 22.99 ㅤ ㅤ ㅤ 22.99 (28) = 643.72 mol now multiply by avogrados number to find the number of atoms. ㅤ ㅤ ㅤ 643.72 (6.022 x 10^23) = 3.88 x 10^26 number of atoms
8 0
4 years ago
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