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Ket [755]
3 years ago
6

Plzz help meee giving 10 points

Chemistry
2 answers:
katovenus [111]3 years ago
7 0

Answer:

The three methods of heat transfer include: conduction, convection, and radiation. It is through one of these processes of heat transfer that the air temperature over water is warmer than the water over land during the winter months. You'll notice on the graph, that January (month 1) and February (month 2) water temperatures are about 20 degrees while the respective air temperatures are about 15 degrees. This is a 5 degree difference in temperature between the air and the water at the same geographical location. Which process do you believe to be the cause of the air temperature differences between land surfaces and a body of water? A) Heat goes directly from water to air through conduction. B) The heat of the ocean is being radiated into the air through the process of radiation. C) Cooler air is replaced by warmer air rising from the surface in the process of convection. D) Heat is transferred through the circulation of the water through the atmosphere in the process of convection.

Explanation:

pls make me brainliest

valina [46]3 years ago
3 0

Answer:

Im pretty sure its convection

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Mg + 2H20 + Mg(OH)2 + H2 + 353kJ
mixer [17]

Answer:

m_{H_2O}=8.9g

Explanation:

Hello,

Based on the given reaction, since magnesium and water are in a 1:2 molar ratio at the reactants, we must apply the following stoichiometric factors to compute the complete reaction of the 6.0 g of magnesium:

m_{H_2O}=6.0gMg*\frac{1molMg}{24.305 gMg}*\frac{2molH_2O}{1molMg} *\frac{18gH_2O}{1molH_2O} \\\\m_{H_2O}=8.9g

Best regards.

7 0
3 years ago
A fixed number of moles of an ideal gas are kept in a container of volume V and an absolute temperature T. If T and V are both d
liubo4ka [24]

Answer:

If the temperature and volume ot a gas increases, the r.m.s. velocity of the molecules in the gas will be 2  times the original r.m.s. molecular velocity.

If T doubles while V is held constant, the new net internal energy of the gas will be 2 times the original internal energy of the gas.

Explanation:

Temperature and root mean square velocity are directly proportional to one anoth. If the temperature increases, root mean square velocity also increases and vice versa, while temperature is also directly proportional to the internal energy of the gas molecules, higher the temperature, higher will be the internal energy and lower the temperature so internal energy will be decreased.

8 0
4 years ago
ASAP Please!
stira [4]
I think the answer would have to be B
3 0
4 years ago
What is the mole fraction of solute in a 3.19 m aqueous solution?
Bumek [7]
Molality= mol/ Kg

if we assume that we have 1 kg of water, we have 3.19 moles of solute. 

the formula for mole fraction --> mole fraction= mol of solule/ mol of solution

1) if we have 1 kg of water which is same as 1000 grams of water. 

2) we need to convert grams to moles using the molar mass of water 

molar mass of H₂O= (2 x 1.01) + 16.0 = 18.02 g/mol

1000 g (1 mol/ 18.02 grams)= 55.5 mol

3) mole of solution= 55.5 moles + 3.19 moles= 58.7 moles of solution

4) mole fraction= 3.19 / 58.7= 0.0543 
4 0
3 years ago
Please Help , Thank You
Mazyrski [523]
The 3rd option is the answer 
7 0
3 years ago
Read 2 more answers
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