3 years ago

Please help me I need these answers

Chemistry

1 answer:

Cerrena [4.2K]3 years ago

8 0

1 is true

2 is d 7

3 is

1 e

2 b

3 d

4 a

5 c

You might be interested in

15 Celsius to kelvin

navik [9.2K]

Answer:

308K

Explanation:

293+15=308

7 0

3 years ago

Read 2 more answers

Water is formed when two hydrogen atoms bond to an oxygen atom.

dem82 [27]

They are two different elements, C. Elements

6 0

3 years ago

When an iron nail is ground into powder, its mass ____.

Gre4nikov [31]

Explanation:

(a) The mass of an object remains the same always. It is independent of its location. In this case, an iron nail is ground into powder. It means that its mass will remain unchanged. Hence, (a) is the correct option.

(b) Whenever there is a change of color of an object, a chemical reaction occurs. It shows that a reaction happens there. In this problem, a paper turns yellow-brown upon exposure to sunlight. A chemical reaction takes place there. Hence, (b) is the correct option.

3 0

3 years ago

We know that for a given reaction when the temperature increases from 100 k to 200 k the rate constant doubles. What is the acti

Alenkasestr [34]

Answer:

The activation energy of the reaction is 1.152 kJ/mol.

Explanation:

Activation energy is the minimum amount which is absorbed by the reactant molecules to undergo chemical reaction.

Initial temperature of reaction = $T_1=100 K$