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Assoli18 [71]
3 years ago
10

Can someone please help me with this

Chemistry
2 answers:
Alexxx [7]3 years ago
4 0
The second is the answer.
Gekata [30.6K]3 years ago
3 0

Answer:

b Mass +1 charge 0

Explanation: protons are neutral, so neutrons do not have charge

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A car moves down the street at 45 kph. The driver takes his foot off the gas pedal but does not brake. Which is the correct expl
nexus9112 [7]
Answer: Friction.

Explanation: Even though the driver has taken the foot off thr gas pedal, the acceleration of the car decreases and the friction continues.

The car slows down because the opposite force of friction continues to act and the acceleration in forward direction is continuous decreasing. Hence, the car slows down.
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3 years ago
What is the pH of a solution prepared by dissolving<br>0.8 g NaOH in water to make 200 mL solution?​
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Answer:

pH>7

Explanation:

bases tend to increase the pH of a solution. since water has the pH of 7 and NaOH has pHof 14, the overall pH of solution will increase.

hope it's helpful.

3 0
3 years ago
Read 2 more answers
Question 12 of 32
slavikrds [6]
C
Because I am right
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2 years ago
A 1.2 L weather balloon on the ground has a temperature of 25°C and is at atmospheric pressure (1.0 atm). When it rises to an el
icang [17]

Answer:

The temperature of the air at this given elevation will be 53.32425°C

Explanation:

We can calculate the final temperature through the combined gas law. Therefore we will need to know 1 ) The initial volume, 2 ) The initial temperature, 3 ) Initial Pressure, 4 ) Final Volume, 5 ) Final Pressure.

Initial Volume = 1.2 L ; Initial Temperature = 25°C = 298.15 K ; Initial pressure = 1.0 atm  ; Final Volume = 1.8 L ; Final pressure = 0.73 atm  

We have all the information we need. Now let us substitute into the following formula, and solve for the final temperature ( T_2 ),

P_1V_1 / T_1 = P_2V_2 / T_2,

T_2 = P_2V_2T_1 / P_1V_1,

T_2 = 0.73 atm * 1.8 L * 298.15 K / 1 atm * 1.2 L = ( 0.73 * 1.8 * 298.15 / 1 * 1.2 ) K = 326.47425 K,

T_2 = 326.47425 K = 53.32425 C

7 0
3 years ago
Which of the following statements are FALSE of models? (select all that applies)
ira [324]

Answer:

A B and C

Explanation:

Hopefully this helps

7 0
3 years ago
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