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Nataly_w [17]
3 years ago
5

The only sure evidence for chemical reaction is

Chemistry
2 answers:
3241004551 [841]3 years ago
8 0
...Is that one or more new substances are produced
omeli [17]3 years ago
3 0
When things explode
You might be interested in
Q2
sergey [27]

Answer: 1.00 M

Explanation:

Moles of Solute/Liters of Solution = molarity. Then you would do 0.500 Moles/ 0.500 L and you get 1.00 M.

5 0
3 years ago
The air in a living room has a mass of 60 Kg and a specific heat of 1,020 J/kg°C. What is the change in thermal energy of the ai
arlik [135]

Answer:

Q = 306 kJ

Explanation:

Given that,

Mass, m = 60 kg

Specific heat, c = 1020 J/kg°C

The temperature changes from 20°C to 25°C.

Let Q be the change in thermal energy. The formula for the heat released is given by :

Q=mc\Delta T

Put all the values,

Q=60\times 1020\times (25-20)\\\\Q=306000\ J\\\\or\\\\Q=306\ kJ

So, 306 kJ is the change in thermal energy.

4 0
3 years ago
Which is the following is a decomposition reaction
lora16 [44]

The equation that is a decomposition reaction is

PbCO3(s) ---> PbO(s) + CO2(g)

That is option D.

<h3>Properties of a decomposition reaction</h3>

A chemical reaction is defined as the combination of substances called reactants to form a product. The various types of chemical reaction include:

  • synthesis reaction

  • combustion reaction

  • decomposition reaction

  • single or double replacement reaction

Decomposition reaction is that type of chemical reaction in which the reactant breaks down to form two or more products.

Therefore the heating of lead (II) carbonate is a decomposition reaction.

Learn more about decomposition reaction here:

brainly.com/question/15229375

5 0
2 years ago
As stated in the article, “As Sticky as a Gecko . . . but Ten Times Stronger!,” the adhesive the researchers developed sticks be
alexandr1967 [171]

Answer:

shear adhesion

Explanation:

edge

6 0
3 years ago
Read 2 more answers
Help me out hear i need help
____ [38]

Answer:

Explanation:

i cant see the attachment

6 0
3 years ago
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