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ella [17]
3 years ago
13

Leandra is baking cookies, and they are ready to come out of the oven. Before she takes them out of the oven, she puts oven mitt

s on. Why does Leandra do this? (2 points)
Group of answer choices

Heat energy moves from warmer objects to cooler ones.

Heat energy moves from cooler objects to warmer ones.

The light energy from her hands will transfer to the cookies.

The coolness of her hands will transfer to the cookies and will make them cold.
Chemistry
1 answer:
Mamont248 [21]3 years ago
5 0
The answer is Heat energy moves from warmer objects to cooler ones
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5 ml of 2 normal naoh solution is to be completely neutralized by 100 ml of unknown concentration of h2so4 solution find the mas
notka56 [123]
I don’t know I’m here for the points sorry love
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3 years ago
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a sample of hydrogen gas (h2) is mixed with water vapor (h2o (g)). the make sure has a total pressure of 811 torr, and the water
Alborosie

Answer:

n=0.430molH_2

Explanation:

Hello!

In this case, considering the partial Dalton's law of partial pressures, we can notice that the total pressure equals the pressure of steam and the pressure of hydrogen, which can be determined as shown below:

p_T=p_H+p_w\\\\p_H=811torr-12torr=799torr*\frac{1atm}{760torr}\\\\p_H=1.05atm

Thus, by using the ideal gas law, we can compute the moles of hydrogen as shown below:

PV=nRT\\\\n= \frac{PV}{RT}=\frac{1.05atm*10.0L}{0.082\frac{atm*L}{mol*K}*298K}\\\\n=0.430molH_2

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6 0
3 years ago
Which is the Lewis structure for H3PO4?
Fed [463]

<u><em>Answer:</em></u>

  • The correct structure of phosphoric acid is A.

<u><em>Explanation</em></u>

  • P should form five covalent bonds. In this strcuture P form three single bond with 3-hydroxyl groups while one single bondformed with oxygen. As oxygen will form two bonds , it carry negative charge, while P should form five bond but here it is forming 4 bonds due to this P has positive charge but overall structure contain neutral charge due to cancellation of positive and negative charges. Beside this, there are 3 H,  Four O and One P according to formula H3PO4.
5 0
4 years ago
PLEASE HELP!
Eduardwww [97]

Answer:

The answer is C, number 4 shows a rift valley

Explanation: This is because the shape of the feature is literally a rift and it forms a valley lol. Also i have some evidence:

7 0
3 years ago
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How many moles of salt are in 13.8 g of sodium chloride?
Hoochie [10]

Answer: 0.24 moles

Explanation:

Molecular Mass of NaCl (23 + 35.5) = 58.5g

58.5g of Sodium Chloride -------> 1 mole of NaCl

∴ 13.8g of Sodium Chloride  ------>  1 ÷58.5 x  13.8 = 0.2358974  ≈    0.24moles

                                                         -  

3 0
3 years ago
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