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3 years ago

The sun causes a greenhouse effect on Earth. How is Earth impacted by the greenhouse effect?(1 point)

1 answer:

4 0

Answer: Sunlight passes through the atmosphere and warms the Earth's surface. ... As more greenhouse gases are emitted into the atmosphere, heat that would normally be radiated into space is trapped within the Earth's atmosphere, causing the Earth's temperature to increase.

Explanation: This keeps well life on earth so the answer is (3)

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1. You are asked to make 200 mls of a 20mM working (diluted) solution of NaCl using a 2M stock solution. Record the volume of 2M

vekshin1

Answer:

The volume of 2M stock solution added = 2 mL

The volume of water = 198 mL

Explanation:

Considering

$Molarity_{working\ solution}\times Volume_{working\ solution}=Molarity_{stock\ solution}\times Volume_{stock\ solution}$

Given that:

$Molarity_{working\ solution}=20\ mM=0.02\ M$

$Volume_{working\ solution}=200\ mL$

$Volume_{stock\ solution}=?$

$Molarity_{stock\ solution}=2\ M$

So,

$0.02\ M\times 200\ mL=2\ M\times Volume_{stock\ solution}$

$Volume_{stock\ solution}=\frac{0.02\times 200}{2}\ mL=2\ mL$

<u>The volume of 2M stock solution added = 2 mL</u>

<u>The volume of water = 200 - 2 mL = 198 mL</u>

3 0

3 years ago

Slaked lime (Ca(OH)2) is formed from quicklime (CaO) by the addition of water. What mass of slaked lime can be produced from a m

vodomira [7]

I hope this can help you

8 0

3 years ago

BRAINLIEST!

Harrizon [31]

Answer:

attracted towards each other

Explanation:

hope u like the ans

3 0

3 years ago

Read 2 more answers

A gas in a piston–cylinder assembly undergoes a compression process for which the relation between pressure and volume is given

m_a_m_a [10]

Answer:

$A=69.8\frac{bar}{m^6}\\\\ B=0.00302bar*m^6$

2. $W=-8.2kPa$

Explanation:

Hello,

1. In this case, for the given p-V equation, one could use the two states to form a 2x2 linear system of equations in terms of A and B:

$\left \{ {{0.1^2A+0.1^{-2}B=1} \atop {0.04^2A+0.04^{-2}B=2}} \right.$

$\left \{ {{0.01A+100B=1} \atop {0.0016A+625B=2}} \right$

Whose solution by any method for solving 2x2 linear system of equations (elimination, reduction or substitution) is:

$A=69.8\frac{bar}{m^6}\\\\ B=0.00302bar*m^6$

2. Now, for us to compute the work, we must first compute n, as the power relating the pressure and volume for this process:

$P_1V_1^n=P_2V_2^n\\\\\frac{P_1}{P_2}=(\frac{V_2}{V_1} )^n\\\\\frac{1bar}{2bar}= (\frac{0.04m^3}{0.1m^3} )^n\\\\0.5=0.4^n\\\\n=\frac{ln(0.5)}{ln(0.4)} =0.7565$

Now, we compute the work:

$W=\frac{P_2V_2-P_1V_1}{1-n} =\frac{2bar*0.04m^3-1bar*0.1m^3}{1-0.7565} \\\\W=-0.082bar*m^3*\frac{1x10^2kPa}{1bar}\\ \\W=-8.2kPa$

Regards.

8 0

4 years ago

Will larger crystals will be formed when molten rock cools more slowly

STatiana [176]

Yes, the crystals will have more time to form and therefore are more likely to be larger compared to one that is cooled quickly.

5 0

3 years ago

Read 2 more answers