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Verdich [7]
3 years ago
13

PLEASE HELP!!

Chemistry
2 answers:
gayaneshka [121]3 years ago
7 0
C! I hope it helps. Have a great day!
GarryVolchara [31]3 years ago
6 0

Answer:

C. El Niño, because of strengthening of trade winds

Explanation:

El Niño causes there to be  an unusual amount of precipitation.

Also I recently did a lesson on this!

Hope this helped!

Have a fantastic day!

~Lola

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What do destructive forces do
mrs_skeptik [129]

Answer:

they destroy or break stuff i think lol hope this helps

Explanation:

6 0
3 years ago
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What is the purpose of the plasma membrane?
ollegr [7]
It protects the cell and allows certain material in and out of the cell
5 0
3 years ago
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ALL ABSURD ANSWERS WILL BE REPORTED AND REMOVED!
ValentinkaMS [17]

Answer:

What is the amount of energy needed to change 20g of ice at 0°C to steam at 100°C?

A mattress you can fall back on.

Use the formula

q = m·ΔHf

where q = heat energy; m = mass; ΔHf = heat of fusion

q = (20 g)x(334 J/g)

q = 6680 J

Step 2: Heat required to raise the temperature of 0 °C water to 100 °C water

q = mcΔT

q = (20 g)x(4.18 J/g·°C)[(100 °C - 0 °C)]

q = (20 g)x(4.18 J/g·°C)x(100 °C)

q = 8360 J

Heat required to raise the temperature of 0 °C water to 100 °C water = 8360 J

Heat required to convert 100 °C water to 100 °C steam

q = m·ΔHv

where q = heat energy; m = mass; ΔHv = heat of vaporization

q = (20 g)x(2257 J/g)

q = 45140 J

Heat required to convert 100 °C water to 100 °C steam = 45140 J

Total energy required: 6680+8360+45140=60180 Joules

Or practically understanding it: about 20s in a 3000W kettle.

7 0
3 years ago
What mass of HBO2 is produced from the<br> combustion of 139.5 g of B2H6?<br> Answer in units of g.
aliina [53]

Answer:

m_{HBO_2}=441.8gHBO_2

Explanation:

Hello there!

In this case, since the combustion of B2H6 is:

B_2H_6+3O_2\rightarrow 2HBO_2+2H_2O

Thus, since there is 1:2 mole ratio between the reactant and product, the produced grams of the latter is:

m_{HBO_2}=139.5gB_2H_6*\frac{1molB_2H_6}{27.67gB_2H_6} *\frac{2molHBO_2}{1molB_2H_6} *\frac{43.82gHBO_2}{1molHBO_2}

m_{HBO_2}=441.8gHBO_2

Best regards!

5 0
3 years ago
100 grams is the same as kg and cg
goblinko [34]

Answer : The 100 grams mass in kilogram and centigram are, 0.1 kg and 10000 cg respectively.

Explanation :

The conversion used from gram to kilogram is:

1 gram = 0.001 kilogram

As we are given the mass 100 grams. Now we have to determine the mass in kilogram.

As, 1 gram mass = 0.001 kg

So, 100 gram mass = \frac{100g}{1g}\times 0.001kg=0.1kg

The mass in kilogram is, 0.1 kg

The conversion used from gram to centigram is:

1 gram = 100 centigram

As we are given the mass 100 grams. Now we have to determine the mass in centigram.

As, 1 gram mass = 100 centigram (cg)

So, 100 gram mass = \frac{100g}{1g}\times 100cg=10000cg

The mass in centigram is, 10000 centigram

7 0
3 years ago
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