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DiKsa [7]
3 years ago
5

Match each term in the first column with an example in the second column. On a sheet of paper, write the letter of the answer.

Chemistry
1 answer:
attashe74 [19]3 years ago
4 0

Answer:

4 = f

3 = d

5 = c

6 = b

2 = a

1 = e

Explanation:

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The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate,
Alexxx [7]

Answer:the atoms of a solid aluminium can are close together vibrating in a rigid structure if the can is warmed up on a hot plate

Explanation:

8 0
4 years ago
Find the percent composition of lead in lead (II) nitrate. round to 2 significant figures.​
just olya [345]

Answer/Explanation:

62.559%

mass of an element   X 100%

mass of the compound

Scientific Notation: 3.45 x 10^5

E Notation: 3.45e5

5 0
3 years ago
Phosphorous acid, H 3 PO 3 ( aq ) , is a diprotic oxyacid that is an important compound in industry and agriculture. p K a1 p K
Novay_Z [31]

Answer:

a. 0.60

b. 1.30

c. 4.00

d. 6.70

e. 10.20

Explanation:

The 3 attached files shows a comprehensive solution                                                            

to the problems with answers highlighted as above                                                          

4 0
3 years ago
A constant-volume calorimeter was calibrated by carrying out a reaction known to release 3.50 kJ of heat in 0.200 L of solution
Dmitrij [34]

Answer:

The change in internal energy is - 1.19 kJ

Explanation:

<u>Step 1:</u> Data given

Heat released = 3.5 kJ

Volume calorimeter = 0.200 L

Heat release results in a 7.32 °C

Temperature rise for the next experiment = 2.49 °C

<u>Step 2:</u> Calculate Ccalorimeter

Qcal = ccal * ΔT ⇒ 3.50 kJ = Ccal *7.32 °C

Ccal = 3.50 kJ /7.32 °C = 0.478 kJ/°C

<u>Step 3:</u> Calculate energy released

Qcal = 0.478 kJ/°C *2.49 °C = 1.19 kJ

<u>Step 4:</u> Calculate change in internal energy

ΔU =  Q + W       W = 0  (no expansion)

Qreac = -Qcal = - 1.19 kJ

ΔU = - 1.19 kJ

The change in internal energy is - 1.19 kJ

4 0
4 years ago
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