A beaker with water and the surrounding air are all at 24°C. After ice cubes are placed in the water, heat is transferred from:(1) the ice cubes to the air
(2) the beaker to the air
(3) the water to the ice cubes
(4) the water to the beaker

Answers

Answer 1

Answer: The answer is (3) the water to ice cubes.

As the ice cubes should be at a temperature of about 0 degree ( freezing point) , at the same time the temperature of water is 24 degree. Thus, heat is transferred from water to ice cubes.

Answer 2

Answer: (3) the water to the ice cubes
This is so because the ice cubes are colder compared to their surrounding objects.
They absorb the heat from the water, cooling it, therefore vanishing(melting).

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How many grams of KOH used to make 1.6 liters of 15% by mass solution with water as the solvent?

Answers

Given:

KOH used to make 1.6 liters of 15% by mass solution with water

Required:

grams of KOH

solution:

the density of KOH is equal to 2.12 kg/L

multiply the known volume of KOH to the density and the percentage of KOH in water

mass of KOH = 1.6 L (2.12 kg/L)(0.15) = 22.61 grams of KOH

Who was chosen to lead the Continental Army?A. Charles Cornwallis
B. Henry Knox
C. George Washington
D. Lord Howe

Answers

George Washington was chosen to lead the Continental Army.

Since Washington was a qualified and professional leader during the French and Indian Wars, they believed that he would make a terrific one for the Continental Army as well. Considering that he was given authority over such a weak and poor army, he somehow handled to force the British out of Boston in 1776 and soon closed the war by having victory at Yorktown in 1781.

C. George Washington was chosen to lead the Continental Army.
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Ernest Rutherford's discovery led to the understanding that atoms consist mostly of empty space with

Answers

Answer: With a positively charged nucleus.

Explanation:

Burning fossil fuels in a low oxygen environment will most likely produceA) carbon monoxide.
B) hydrogen peroxide.
C) sulfuric acid.
D) methane.

Answers

Final answer:

Burning fossil fuels in a low oxygen environment most likely produces carbon monoxide due to incomplete combustion. This is because there isn't enough oxygen to react with carbon, leading to formation of carbon monoxide instead of carbon dioxide. The correct option is A.

Explanation:

When fossil fuels are burned in a low-oxygen environment, the most likely product will be carbon monoxide (A). This occurs because in a low-oxygen environment, there is not enough oxygen to react with the carbon atoms in the fossil fuels to form carbon dioxide, which is the normal product of combustion in a high-oxygen environment. Instead, each carbon atom reacts with only one oxygen atom, forming carbon monoxide instead of carbon dioxide. It's also important to note that the production of carbon monoxide in such situations is a significant health hazard as it is a poisonous gas.

Learn more about Burning of fossil fuels here:

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Is Ba(NO3)2 covalent or ionic

Answers

It is ionic..........

Answer:

Barium Nitrate ( Ba(NO3)2 ) is an Ionic bond.

Explanation:

Ionic bonding is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds.

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