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natta225 [31]
3 years ago
9

Which of the following describes the greenhouse effect?

Chemistry
1 answer:
forsale [732]3 years ago
5 0

Answer:

D

Explanation:

Earth's greenhouse gases trap heat in the atmosphere and warm the planet.

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She needs to set boundaries

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Diet

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In an experiment you are asked to react hydrochloric acid with sodium hydroxide. when measuring the volume of the reactants, whi
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- A 100 mL graduated cylinder since it has marks showing the volume of the substance measured.

Explanation;

-A graduated cylinder or a measuring cylinder is a common piece of laboratory equipment used to measure precise volumes of a liquid.

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Ayye yoo who want to answer this question ill give brainlist :)
frez [133]

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noble-gas notation

Explanation:

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2 years ago
Which TWO statements describe the ocean floor giving brainliest pls help explain ur answer
Gelneren [198K]

Answer:

Dude im not 100% sure but I think its b and c im sorry if im wrong its just that im not really sure which ones are.

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8 0
3 years ago
A solution was made by dissolving 5.10 mg of hemoglobin in water to give a final volume of 1.00 ml. the osmotic pressure of this
Assoli18 [71]

The molecular weight of hemoglobin can be calculated using osmotic pressure

Osmotic pressure is a colligative property and it depends on molarity as

πV = nRT

where

π = osmotic pressure

V = volume = 1mL = 0.001 L

n = moles

R = gas constant = 0.0821 L atm / mol K

T = temperature = 25°C = 25 + 273 K = 298 K

Putting values we will get value of moles

moles=\frac{\pi V}{RT}=\frac{0.00195X0.001}{0.0821X298}mol

we know that

moles=\frac{mass}{molarmass}

Therefore

molarmass=\frac{mass}{moles}=\frac{5.10X10^{-3}g}{7.97X10^{-8}}=6.399X10^{4}g

5 0
3 years ago
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