Which of the following best defines Avogadro's number?
Mass, in grams, of each particle of the substance
Number of particles in one mole of a pure substance
O Mass, in grams, of the nucleus of the substance's atoms
Total mass, in grams, of all the particles in one mole of the substance

The reproduction of hydra is through budding process from its body. This process of regeneration is called mitosis.Mitosis is a type of cell division process. Thus option A is correct.

Mitosis is a cell division process in which one cell produces two identical daughter cells. The term mitosis means the duplication of the genetic material chromosomes with the exact gene information.

Different stages in mitosis together is called mitotic phases. Hydra is an invertebrate freshwater organism. Hydra has a translucent tubular body which can be elongated and contracted.

Hydra is classified to the phylum hydrozoa. It have a regeneratable head. The reproduction of hydra is through budding. A small bud first projects from its tubular body which then develops and emerges out by cell division.

The divided daughter hydra will grow as a matured hydra. This overall budding process takes places through mitosis. Hence, option A is correct.

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Answer: Ocean currents act as conveyer belts of warm and cold water, sending heat toward the polar regions and helping tropical areas cool off

Explanation: Hope this helps? Brainliest if it helped

Answer:

48.42g of Mg

Explanation:

Answer:

they other guys is ri gh gt

Answer:

The major ionic constituents whose concentrations can be determined from the salinity are known as conservative substances. Their constant relative concentrations are due to the large amounts of these species in the oceans in comparison t

The percent composition of water will be 15%

The percent composition of a component of a compound is found by dividing the mass of the component by the mass of the compound.

In other words:

Percent composition = mass of component/mass of substance x 100

In this case, the formula for barium chloride dihydrate is [tex]BaCl_2.H_4O_2[/tex]

The molar mass of the compound is 244.26 g/mol

The molar mass of the water component is 18 x 2 = 36 g/mol

Thus, the percent composition of water in the compound can be found, such that:

Percent composition of water = 36/244.26 x 100

                                      = 15% to the nearest whole number.

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Answer:

Bacteria or mold grows in the can giving of the gasses and producing byproducts that may be harmful or dangerous to ingest (eat).

Explanation:

Answer:

c-d

Explanation:

this is a section of the graph sloping down, meaning the state of matter isn't changing but is getting ready too (the actually changing of states happens in the flat sections). A-B is the gas cooling, b-c is the gas changing into liquid, which leads to the liquid cooling in the next section

We have that the value of Ki for the inhibited reaction

a)

Generally, if the fee of Vmax binds, the place the enzyme inhibitor binds solely to the complicated fashioned between the enzyme and the substrate.

b) V diminished through 70%

Thereofore

Alternate = 1 - 0.7 = 0.3V

Hence

0.3 =1/ ( 1 + [I]/KI)

1= 0.3(1 + 0.657/KI )

0.3 + 0.1971KI = 1

KI = 3.551mM

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Answer:

Balance the equation first

[tex]2H_{2} \ + \ O_{2} \ --> \ 2H_{2}O[/tex]

          6.58g of Oxygen gas

Divide 6.58g by molar mass of oxygen (32g/mol)

6.58/32 = 0.205625 mol

Use mol to mol ratio from looking at the coefficients of the reactants, the mol ratio of Hydrogen gas to Oxygen gas is 2:1, so for every 1 mol of Oxygen, you need 2 times the mol of hydrogen for it to make water.

0.205625 * 2 = 0.41125 mol

To get the mass of hydrogen gas needed in the reaction, turn 0.41125 mol into mass by multiplying it with Hydrogen gas's molar mass, which is 2.02 g/mol.

0.41125 * 2.02  ≈ 0.83g of H2

Answer:

because there are other particles to help it move around in the air

Answer:

4.5moles

Explanation:

2.25moles times 2 hydrogen atoms per one molecule

The number of hydrogen atoms present in 2.25 moles of hydrogen carbonate is 4.5.

A mole of a compound is equivalent to the one formula unit of the compound. The number of atoms of each element in a mole of the compound can be given from the formula unit.

1 unit of hydrogen carbonate consists of 2 atoms of hydrogen. Thus, 1 mole of hydrogen carbonate has 2 hydrogen atoms.

The number of hydrogen atoms in 2.25 mole of hydrogen carbonate can be given as:

[tex]\rm 1\;mol\;H_2CO_3=2\;atoms\;Hydrogen\\2.25\;mol\;H_2CO_3=2.25\;\times\;2\;atoms\;of\;hydrogen\\2.25\;mol\;H_2CO_3=4.5\;atoms \;of\;Hydrogen[/tex]

The number of hydrogen atoms present in 2.25 moles of hydrogen carbonate is 4.5.

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A and C are the only two places that would represent the oldest rocks

The total pressure of gases is equivalent to 739mmH divided by the area.

To calculate the total pressure of gases, the next formula can be used:

The area of a cylinder is equal to 2πrh+2πr².

You can know the radio by checking the measurement of the base of the graduated cylinder. Also, you can determine the height by observing how many mm the gas is occupying. Then follow these steps:

Note: This question is incomplete because the height occupied by the gas and the radio of the cylinder are not provided. Due to this, I answered this question based on general knowledge.

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Answer:

0.13 atm

Explanation:

Using the Ideal Gas Law; PV=nRT, we can rearrange to solve for pressure.

P=nRT/V

P is pressure, n is number of moles (0.023), R is a constant (0.08206 L*atm/mol*K), T is temperature in Kelvin (293.15K) and V is volume, 4.2 L.

So, plugging in;

P=(0.023mol)(0.08206L*atm/mol*K)(293.15K)/(4.2 L)

P=0.1317 atm

P=0.13 atm; multiply by 760 to get to Torr or mmHg.

Answer: During an asthma attack, you aren't getting enough oxygen into your lungs. This means less oxygen is getting into your blood and into your muscles. Without oxygen, fatigue sets in.

Answer:

precipitation

Explanation:

Energy can be converted from one form to another.

The question is incomplete as the system is not shown but I will try to help you the much I can. First of all, this question deals with the idea of energy transformation. We must note that energy is neither created nor destroyed but can be transformed from one form to another.

The system ought to have been composed of many systems in which energy transformations occur ad each of these must obey the law stated  above. These energy transformation are not 100% efficient as some energy is lost as heat along the way

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Answer:

100 / 500

Explanation:

100 / 500 is equivalent to 1 / 5.

I Gallon = 3.785 L 1 Mg = 1 mg gallon 3.785L. 3. The recommended adult dose of Elixophyllin®, a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in milligrams for a 112 lb person. (o oo Kg | K9 6.oong 112 15 = 3 04.7 - 3 2.20515 2.20516 my k.

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Answer:

emi should put it in a metal container and place directly to the sun emi should place two mirrors opposite it and that will increase the heat which will melt the Marsh mallow

Explanation:

Consider that strong bases are strong nucleophiles, and thus unstable with the negative charge associated with dissociation from the molecule. Hence, strong bases are generally very poor leaving groups, but can be converted into good leaving groups that are more stable with the associated negative charge.

Answer:

0.07mol

Explanation:

n=mass/molar mass

Answer:

Carbon Dioxide

Explanation:

This is a covalent compound so to name it you have one carbon, no prefix needed, & 2 oxygen the prefix for 2 is Di-.

Answer:

The heat Q transferred to cause a temperature change depends on the magnitude of the temperature change, the mass of the system, and the substance and phase involved. (a) The amount of heat transferred is directly proportional to the temperature change.

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Answer:

C2H3

Explanation:

.

The empirical formula of the compound is C3H3.

In science, the exact equation of a synthetic compound is the most straightforward entire number proportion of particles present in a compound. A basic illustration of this idea is that the experimental recipe of sulfur monoxide, or somewhere in the vicinity, would just be Thus, similar to the observational recipe of di sulfur dioxide, S2O2.

In this manner, sulfur monoxide and di sulfur dioxide, the two mixtures of sulfur and oxygen, have a similar exact equation. Nonetheless, their sub-atomic equations, which express the quantity of iotas in every particle of a synthetic compound, are not something similar.

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Answer:

The combined weights of several liquids mixed in an open flask be less than the sum of all the weights of the liquids because when the reaction occurs new products are formed and also some gases which releases in the atmosphere.

Answer:

First filter the the un-soluble solute out of the solution

Then get the solute and put it on an evaporating dish to form salt crystals

Explanation: