3 years ago

Please answer all three of these questions

Chemistry

2 answers:

SOVA2 [1]3 years ago

7 0

Answer:

I think it's 1.D

2.C

3.C

my apologies if it's incorrect

lutik1710 [3]3 years ago

4 0

1 is chemical energy cause thats what gas and electric stoves are

2 is convection

3 is c

You might be interested in

Solid calcium carbonate decomposes to produce solid calcium oxide and carbon dioxide gas. Express your answer as a chemical equa

Gwar [14]

Answer:

$CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$

Explanation:

Hello!

In this case, when solid calcium carbonate, CaCO3 (s), is decomposed by the action of thermal energy (heat), solid calcium oxide, CaO (s) and carbon dioxide gas, CO2 (g) are yielded via the following reaction:

$CaCO_3\rightarrow CaO+CO_2$

However, since calcium carbonate is solid as well as calcium oxide and carbon dioxide is given off as a gas, we write:

$CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$

Which also balanced.

Best regards!

8 0

3 years ago

How many 2p electrons are in an atom of each element?

Elis [28]

The amount of electrons is based on the proton number

7 0

3 years ago

Use the periodic table to determine the electron configuration for Br and Y in noble-gas notation.

Gennadij [26K]

Answer:

[Ar]4s24p5

Explanation:

just took the assignment

8 0

3 years ago

Read 2 more answers

John rode 3 kilometers on his bike. His sister Sally rode 20,000 meters on her bike. Who rode

Vedmedyk [2.9K]

Answer:

Sally rode further by 17 km.

Explanation:

1km = 1,000m

4 0

3 years ago

5,500 cm scientific notation

Alex73 [517]

5,500 written as 5.5 x 103 in scientific notation. hope i helped

7 0

3 years ago

Read 2 more answers

Please answer all three of these questions ​

Please answer all three of these questions