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Mrrafil [7]
3 years ago
13

Post Test

Biology
1 answer:
Nana76 [90]3 years ago
8 0
I think Exposure to urine
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What is the density of a liquid that has a volume of 20 mL and a mass of 3 g?
natka813 [3]
<h2>The density of liquid is 0.15 \dfrac{g}{ml} . </h2>

Explanation:

Given:

Volume of a liquid(V) = 20ml and

Mass of a liquid(M) = 3g

To find, the density of a liquid( \rho ) = ?

We know that,

Density(\rho ) = \dfrac{Mass(M)}{Volume(V)}

Density( \rho )= \dfrac{3}{20}

Density( \rho )= 0.15\dfrac{g}{ml}

Thus, the density of liquid is 0.15\dfrac{g}{ml}.

3 0
3 years ago
Most of the water vapor in the atmosphere comes from evaporation of water from oceans. Most of this evaporation occurs where the
ahrayia [7]

Answer:

near the Equator

Explanation:

The part of the Earth that receives the most amount of solar radiation is always near the Equator. This is because the Earth itself revolves around the run in a tilted motion, since the Earth is round this makes the Equator always closest to the sun which means it will always get the most direct amount of Sun Radiation. This radiation causes more heat which ultimately causes a greater amount of water to be evaporated in this location.

6 0
3 years ago
Scientists classify an element based on what criteria?
frozen [14]

Answer:

dont know if this is it like what u want but  

like CI btw thats c and an i but yea CI mass number is 35 and its atomic number is 17

Explanation:

8 0
3 years ago
Why does cellular respiration add carbon dioxide to the atmosphere, but photosynthesis does not?
Arlecino [84]
If I'm not mistaken it is because in order for respiration to occur it requires oxygen before releasing carbon dioxide where as when photosynthesis takes place the plant absorbs carbon dioxide and releases oxygen into the atmosphere
7 0
3 years ago
Help giving brainliest
garri49 [273]

According to Lavoisier's law, in the given reaction the mass of zinc produced will be 104 g.

Let's consider the following reaction.

Ca    +    ZnCO₃    ⇒    CaCO₃    +    Zn

64g         192 g              152 g           ? g

<h3>What does Lavoisier's law state?</h3>

Lavoisier's law states that the sum of the masses of the reactants before the reaction is equal to the sum of the masses of the products after the reaction.

mCa + mZnCO₃ = mCaCO₃ + mZn

mZn = mCa + mZnCO₃ - mCaCO₃

mZn = 64 g + 192 g - 152 g = 104 g

What would be the amount of zinc formed during the reaction?

  • The mass of zinc produced will be 104 g. TRUE.
  • The mass of zinc will be the same as that of zinc carbonate. FALSE.
  • The mass of zinc produced will be 52 g. FALSE.
  • The mass of zinc will be the same as that of calcium. FALSE.

According to Lavoisier's law, in the given reaction the mass of zinc produced will be 104 g.

Learn more about Lavoisier's law here: brainly.com/question/11429078

6 0
2 years ago
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