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san4es73 [151]
4 years ago
11

The acceleration of a runner who accelerates from 0 m/s to 3 m/s in 12s

Chemistry
1 answer:
Naily [24]4 years ago
5 0
4 m/s^2


I hope this helps! 
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Which of the following do/does not change with the change in temperature?
Phantasy [73]

Answer:

c. Both i & ii

Explanation:

Moles do not change with temperature hence Mole fraction does not depends of temperature.

Molality is number of moles of solutes per kilogram of solvent. It has no relationship with temperature.

This means both of them do not change wit the change in temperature.

Correct option;

c. Both i & ii

8 0
3 years ago
Which of the following describes a response to external stimuli?
Pavlova-9 [17]
The correct answer is A.

Hunger, chemical imbalance, and blood levels are all internal issues. Cat dander on the other hand is not something the body creates or and is something in the environment.  
Thus, your answer is A. 
3 0
3 years ago
Read 2 more answers
Using the video controls, compare the wave shapes of a mosquito's buzz with the wave shape of the air boat's roar. How are the s
Illusion [34]

Answer:

The height of the waves vary. The wave height is much larger for the air boat than for the mosquito.

Explanation:

Plato question

7 0
3 years ago
Read 2 more answers
Ba(oh)2+H3po4+h2o how is it <br> balance ?
Igoryamba

Answer:

3Ba(OH)2 + 2H3PO4 —> Ba3(PO4)2 + 6H2O

Explanation:

Ba(OH)2 + H3PO4 —> Ba3(PO4)2 + H2O

There are 3 atoms of Ba on the right side and 1atom on the left side. It can be balance by putting 3 in front of Ba(OH)2 as shown below:

3Ba(OH)2 + H3PO4 —> Ba3(PO4)2 + H2O

There are 2 atoms of P on the right side and 1atom on the left. It can be balance by putting 2 in front of H3PO4 as shown below:

3Ba(OH)2 + 2H3PO4 —> Ba3(PO4)2 + H2O

Now, there are a total of 12 atoms of H on the left side and 2 atoms on the right side. It can be balance by putting 6 in front of H2O as shown below:

3Ba(OH)2 + 2H3PO4 —> Ba3(PO4)2 + 6H2O

Now the equation is balanced as the numbers of the atoms of the different elements present on both sides are equal

4 0
4 years ago
Sodium and water react according to the following equation. If 51.5 g of sodium are added to access water, how many liters of hy
marissa [1.9K]

Answer is: volume is 25.08 liters.

Balanced chemical reaction: 2Na + 2H₂O → 2NaOH + H₂(g).

m(Na) = 51.5 g; mass of sodium.

n(Na) = m(Na) ÷ M(Na).

n(Na) = 51.5 g ÷ 23 g/mol.

n(Na) = 2.24 mol; amount of sodium.

From chemical reaction: n(Na) : n(H₂) = 2 : 1.

n(H₂) = 2.24 mol ÷ 2.

m(H₂) = 1.12 mol; amount of hydrogen gas.

V(H₂) = n(H₂) · Vm.

V(H₂) = 1.12 mol · 22.4 L/mol.

V(H₂) = 25.08 L; volume of hydrogen gas.

7 0
4 years ago
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