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coldgirl [10]
4 years ago
8

Which reason best explains why carbon is able to form macromolecules?

Chemistry
1 answer:
Tanya [424]4 years ago
6 0
Carbon atoms are extremely small and are one of the only atoms that are structurally stable enough to form various different kinds of macromolecules.
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Lily is trying to measure the volume of her hand. She places it in a can full of water. The volume of water that is __________ i
PolarNik [594]

Answer:

Displaced

Explanation:

A convenient way to measure the volume of an object is to measure the volume of a solid is to immerse the solid into water.

When a solid is immersed in water, it displaces some volume of water. This volume of water displaced is the same as the volume of the object.

For instance, if the volume of water in a measuring cylinder was 25 ml and i added a stone which made the water in the measuring cylinder to rise to 70 ml, it simply means that the volume of the object is 70 ml - 25 ml = 45 ml

8 0
3 years ago
Why is cellular reparation important for cells?
sladkih [1.3K]
Respiration aids in replenishing O2 and decrease the CO2 level in the cell. O2 is an important receiver in the oxidative respiration chain in the mitochondria, which is responsible for producing ATP for the cell. ATP can be considered as the “energy currency” of the cell. Many biochemical reactions in the cell requires ATP, including the operations of ion channels, buffer systems, transportation via vesicles, etc. Therefore if there is no O2, the cell cannot produce ATP and will die.
4 0
3 years ago
Four people are needed to lift a TV set with a single fixed pulley. How many people will be needed to lift the same TV set with
expeople1 [14]
If they need 4 people to a pulley then they would need a 8 to two pulleys
here is the equation
4people*2/pulley*2
8people/2pulley

4 0
4 years ago
Why do scientists use SI?
garik1379 [7]
The SI<span> system, also called the metric system, is </span>used<span> around the world. There are seven basic </span>units<span> in the </span>SI<span> system: the meter (m), the kilogram (kg), the second (s), the kelvin (K), the ampere (A), the mole (mol), and the candela (cd).

</span>
3 0
4 years ago
Read 2 more answers
How many atoms are present in 98.1 grams of Ar? You may report your numerical answer in scientific notation use e-notation.
Andrei [34K]

Answer:

1.48 × 10²⁴ atoms

Explanation:

Step 1: Calculate the moles of argon

Argon is a noble gas, whose molar mass is 39.95 g/mol. We will use this data to find the moles corresponding to 98.1 grams of argon.

98.1g \times \frac{1mol}{39.95g} =2.46 mol

Step 2: Calculate the atoms of argon

In order to calculate the number of atoms of argon in 2.46 moles of argon, we have to consider the Avogadro's number: there are 6.02 × 10²³ atoms of Ar in 1 mole of Ar.

2.46mol \times \frac{6.02 \times 10^{23}atoms  }{1mol} = 1.48 \times 10^{24}atoms

6 0
3 years ago
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