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DochEvi [55]
2 years ago
7

Is it correct to say that only one observable change accompanies a chemical change?

Chemistry
1 answer:
eimsori [14]2 years ago
5 0

Answer:

it is not correct to say that one observable change accompanies a chemical change because if a substance change its shape or size it doesn't mean that it has undergone a chemical change.

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Scale
Oduvanchick [21]

Answer:

7.58

Explanation:

6 0
2 years ago
A 15.75 g piece of iron absorbs 1097 joules of heat energy, and its temperature changes from 25°C to 177°C. Calculate the specif
vekshin1

The answer for the following problem is mentioned below.

Explanation:

Given:

mass of iron (m) = 15.75 grams

heat (q) = 1097 J

initial temperature (t_{1}) = 25°C

final temperature (t_{2}) = 177°C

To find:

specific heat (c)

We know;

 c = q ÷ mΔT

where;

c represents the specific heat

q represents the heat

m represents the mass

t represents the temperature

c = \frac{1097}{15.75 * (177-25)}

c = 0.45 J/kg°C

<u><em>Therefore the specific heat capacity of iron is 0.45 J/kg°C.</em></u>

8 0
3 years ago
As a boy was it a balloon its volume increases
goldenfox [79]
What is Avogadro’s Law
5 0
3 years ago
Question 3
algol [13]

Answer:

Curd is acidic in nature, because an acidic substance has less value of pH. A milkman adds a very small amount of baking soda to fresh milk. Why does he shift the pH of the fresh milk from 6 to slightly alkaline? Answer: By making the milk more alkaline, it takes more time to turn into curd.

6 0
3 years ago
What is haloalkanes? <br><img src="https://tex.z-dn.net/?f=%20%5C%5C%20" id="TexFormula1" title=" \\ " alt=" \\ " align="absmidd
expeople1 [14]

Answer:

It is a group of compound derived from alkanes containing one or more halogens .

7 0
3 years ago
Read 2 more answers
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