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d1i1m1o1n [39]
3 years ago
7

Just need help with these two questions

Chemistry
1 answer:
kvasek [131]3 years ago
8 0
B/A hope it help thanks
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The gases inside of a normal tire are usually measured when they are at ambient standard temperature (298 K) & under a contr
Anastaziya [24]

Answer:

100°C

Explanation:

The following were obtained from the question:

Initial temperature (T1) = 298 K

Initial pressure (P1) = 32.5 Psi

Final pressure (P2) = 40.68 Psi

Final temperature (T2) =..?

The final temperature can be obtained as follow:

P1/T1 = P2/T2

32.5/298 = 40.68/T2

Cross multiply to express in linear form

32.5 x T2 = 298 x 40.68

Divide both side by 32.5

T2 = (298 x 40.68) /32.5

T2 = 373K

Next, we shall convert 373K to celsius.

This is illustrated below:

T(°C) = T(K) – 273

T(K) = 373

T(°C) = 373 – 273

T(°C) = 100°C

Therefore, the temperature of the air inside the tire at 40.68 Psi is 100°C

8 0
3 years ago
Endothermic and Exothermic Activity
morpeh [17]

Answer:

Check the explanation

Explanation:

1.

Kindly check the first image for the Synthesis reaction

2.

Kindly check the second image for the Single replacement reaction

3.

Kindly check the second image for the Double displacement reaction

                                          Activation energy        Enthalpy change

Synthesis reaction                                45 KJ                     +35 KJ

Single replacement reaction             20KJ                      -35 KJ

Double replacement                         65 KJ                      +50KJ

4 0
3 years ago
The lowest energy level of sodium contains
LuckyWell [14K]

Answer:

option a

Explanation:

The group number of an element is equal to the number of electrons the outermost shell (or highest energy level) contains

7 0
3 years ago
Which of the following are true about a block of ice at -10 degrees Celsius as you continue to apply heat.
LekaFEV [45]
<span>It’s temp will remain at 0 degrees Celsius until all the ice Melts
</span>

5 0
4 years ago
A balance and a graduated cylinder are used to determine the density of a mineral sample.
Nostrana [21]
Yea what they said up top!
7 0
3 years ago
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