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Rus_ich [418]
3 years ago
5

Use the drop-down menus to answer the questions.

Chemistry
2 answers:
alexgriva [62]3 years ago
6 0

Answer:

1. A

2. B and C

Explanation:

got it right in edg (see pic)

Vinvika [58]3 years ago
5 0

Answer:

A B C

Explanation:

person above is right

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What is the lewis structure for al?
bogdanovich [222]
The abbreviation Al, with one dot on top of the abbreviation, one on the left, one on the right.
8 0
3 years ago
If a balloon containing 3000 L of gas at 39 C and 99 k Pa rises to an altitude where the pressure is 45.5 kPa and the temperatur
mihalych1998 [28]

Answer:

The new volume of the balloon will be 6046.28 L

Explanation:

Initial pressure (P1) = 99 kpa

initial volume (V1) = 3000 L

Initial temperature = 39 C = 39 + 273 = 312 K

Final pressure (P2) = 45.5 kpa

Final temperature = 16 C = 16 +273 = 289K

Final volume = ????

To calculate the final volume using the general gas equation

                  P1 V1 / T1  = P2 V2 / T2

make V2 the subject of the formular

                   V2 = 99000 ×3000× 289 / 45500×312

                   V2 = 85833000 /14196

                     V2 = 6046.28 litres

5 0
3 years ago
When solid magnesium burns, it reacts with oxygen in the air to form a powder called magnesium oxide. A chemist performed this r
siniylev [52]

Answer:

A. The increase in the mass of the magnesium oxide was due to oxygen atoms in the air.

Explanation:

Burning occurs in the presence of oxygen. A chemical combination occurs between Mg and O in that the atom of magnesium attracts one another.

          Mg + O₂ → MgO

Starting with the magnesium, on reacting with oxygen a new compound forms. This is why there is mass increase in the MgO compared to the starting material.

4 0
3 years ago
Read 2 more answers
A square table has an area of 400 square feet. They want to cut the table into two equal rectangles. If they cut the table in ha
Orlov [11]

Answer:

b=200

l=100

Explanation:

so since it is a square all sides would be equal

when you cut the square vertically the dimensions will change

the bredth would be same that is 200

but the length would be half that is 100

7 0
3 years ago
How many atoms are in 2 moles of carbon​
ollegr [7]

Answer:

Explanation:

2 mole x 6.023x 10^23atoms/mole =12.04 atoms

4 0
2 years ago
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