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Vladimir79 [104]
3 years ago
8

Which substance can not be decomposed by a chemical change? (1) AlCl3 (3) HI (2) H2O (4) Cu

Chemistry
2 answers:
user100 [1]3 years ago
5 0
Cooper is the substance that can't be decomposed by a chemical chAnge. So 4)
adoni [48]3 years ago
3 0
<span>The answer I choose is option (4) Copper</span>
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Who is john dalton,jj Thompson
Gre4nikov [31]

Atomic Theory. In 1897, English physicist J. J. Thomson (1856–1940) disproved Dalton's idea that atoms are indivisible. ... One of those parts is a negative tiny particle, which Thomson called a corpuscle in 1881.

Hope this is what you were looking for!

7 0
3 years ago
Read 2 more answers
Determine the number of atoms in 0.075 mol of Carbon (C)? please help
nignag [31]
It would be C, 6.2 x 10^23.

Avogadro's number, or, the mole, is 6.02 x 10^23. Although the grams and molar mass of an element may be different, every element must have the same amount of atoms to obey avogadro's number. 
5 0
4 years ago
SEP Design Solutions You are given an unknown solution and asked to determine whether it is an acid or a base. What properties o
solong [7]

Answer:

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7 0
3 years ago
suppose you mix 100.0 g of water at 22.6 oc with 75.0 g of water at 75.4 oc. what will be the final temperature of the mixed wat
Arada [10]

The temperature of mixed water is 45.230C under the conditions stated.

<h3>How can the change in temperature when mixing water be calculated?</h3>

T(final) = (m1 T1 + m2 T2) / (m1 + m2), at which m1 and m2 are indeed the weight training of the water in the initial and 2nd canisters, T1 is the water temperature in the first container, and T2 is the water temperature in the second container, can be used to determine the final the water's temperature mixture.

<h3>Briefing:</h3>

The given parameters;

mass of the cold water, m = 100 g

initial temperature of the water, t₁ = 22.6 ⁰C

initial temperature of the hot water, t₂ = 75.4⁰ C

75 g is the hot water's mass.

specific heat capacity of water is 4.184 J/g⁰C

The mixture's final temperature is estimated as follows;

Based on the principle of conservation of energy;

Heat received by the ice water equals heat lost by the hot water.

mcΔθ₂ = mcΔθ₁

75 x 4.184 x (75.4 - T) = 100 x 4.184 x (T - 22.6)

75 x (75.4 - T) = 100 x (T - 22.6)

(75.4 - T) = 1.333(T - 22.6)

75.4 - T = 1.333T - 30.1258

75.4 + 30.1258 = 1.333T + T

105.5258 = 2.333T

T = 45.2318⁰C

To know more about temperature visit :

brainly.com/question/29386637

#SPJ4

5 0
2 years ago
The development of Avagadro's number was based on 12 grams of Hydrogen. Question 3 options: True False
Lemur [1.5K]
I believe the answer is false
6 0
3 years ago
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