In the future the universe will most likely

Answer:

The number following the name of the element is the number of subatomic particles inside the nucleus of the atom. This means that it is the mass number of the isotope. The average atomic mass of the element is the sum of the products of the percentage abundance and mass number of the naturally occurring isotopes.

Since, the average atomic mass of the hydrogen is nearest to 1 then, the most abundant isotope should be hydrogen-1.

Answer:

c6h12o6 + 6o2 = 6co2 + 6h20

Explanation:

c6h12o6 + 6o2 = 6co2 + 6h20

0 = 18 18

h = 12 12

c = 6 6

Air that is less dense Speeds up, while air that is more dense Slows Down.

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Answer:

6.00 LAgNO3

Explanation:

Got it right on Edge. :)

Answer:

B

Explanation:

Answer:

CO2 and H20

Explanation:

The products are on the right hand side of the equation.

Answer:

imma say C or D

Explanation:

Answer: 59.41

Explanation:

The final temperature of the system has been 130[tex]\rm ^\circ C[/tex].

Specific heat can be defined as the amount of heat required to raise the temperature of 1 g of substance by 1-degree celsius.

The amount of heat lost and the heat gained have been equal.

Heat = mass × specific heat × change in temperature

Thus,

mc[tex]\Delta[/tex]T = mc[tex]\Delta[/tex]T

50 g × (10 - x) = 120 × (x - 80)

500 - 50x = 120x - 9600

70x = 9100

x = 130

Thus, the final temperature of the system has been 130[tex]\rm ^\circ C[/tex].

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Answer:

hydrogen(H2) and oxygen gas(O2

Answer:A) H20 gas

Explanation:

Based on the property of gases, 1-gram sample of hydrogen gas, H₂ in a sealed 1-liter container will occupy the container completely and uniformly.

Gases are one of the states of matter.

Gas molecules have negligible forces of attraction between them, therefore, they are always in motion.

Gases do not have a specific shape or volume, rather they fill up every available space in their container.

Of the given option, only H₂ is a gas.

Therefore,  1-gram sample of hydrogen gas, H₂ in a sealed 1-liter container will occupy the container completely and uniformly.

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Answer:

The autonomic nervous system has a direct role in physical response to stress and is divided into the sympathetic nervous system (SNS), and the parasympathetic nervous system (PNS). When the body is stressed, the SNS contributes to what is known as the “fight or flight” response.

Explanation:

Answer:

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Answer:

C

Explanation:

The pairing of the cell produced during meiosis and correct example is haploid cell: egg cell (Option C).

In conclusion, the pairing of the cell produced during meiosis and correct example is haploid cell: egg cell (Option C).

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Answer:

Multiply the length value by 6.68456e-9

Explanation:

The question involves converting from one unit (kilometers) to another unit (Au)

From the question;

149,598,000 km = 1 AU

1 km = x

Cross multiplying;

1  * 1 = x * 149,598,000

1 = 149,598,000x

x = 1 / 149,598,000

x = 6.68456e-9

To convert kilometer to Au; Multiply the length value by 6.68456e-9

Answer:

0.0125 moles of NaOH are present

Explanation:

Molarity, M, is an unit of concentration widely used in chemistry. Is defined as the ratio between moles of solute (In this case, NaOH) and liters of solution.

250.0mL are = 0.250L of solution. As the molarity of the solution is 0.05M = 0.05moles / 1L, the moles present are:

0.250L * (0.05moles / 1L) =

Answer:

B

Explanation:

I think its water desposits clay in thick , flat layers because the way how a clay feels.

Answer:

0.0125mol

Explanation:

Molarity (M) = number of moles (n) ÷ volume (V)

n = Molarity × Volume

According to this question, a 0.05M solution contains 250 mL of NaOH. The volume in litres is as follows:

1000mL = 1L

250mL = 250/1000

= 0.250L

n = 0.05 × 0.250

n = 0.0125

The number of moles of NaOH is 0.0125mol.

Answer:

D.

Explanation:

Answer and Explanation:

2 mol of Fe(OH)3 produces 1 mol of Fe2(SO4)3  then 2.1 mol of Fe(OH)3 will produce (1)/(2) x 2.01 = 1.05 mol of Fe2(SO4)3  amount of H2O = (6)/(2) * 2.01 = 6.03 mol HO2

Answer:

the veins and arteries are the things that distribute blood throughout your body. There was a lot more blood in the arteries, that's making them very important and should not be cut ever. Veins on the other hand can be cut but you should still not cut them to begin with as if to not lose any blood. They distribute blood throughout your body that comes from your heart and helps muscles skeletal another systems of your body work.

Answer:

15.3 g

Explanation:

First we convert 8.0 grams of aluminum into moles, using its molar mass:

Then we convert 0.30 moles of aluminum into moles of aluminum oxide, using the stoichiometric coefficients:

Finally we convert 0.15 moles of Al₂O₃ into grams, using its molar mass:

Answer:

n = 2 moles (1 sig-fig)

Explanation:

Using the Ideal Gas Law equation (PV = nRT), solve for n (= moles) and substitute data for ...

pressure = P(atm) = 100atm

volume =V(liters) = 50L

gas constant = R = 0.08206L·atm/mol·K

temperature = T(Kelvin) = °C + 273 = (35 + 273)K = 308K

PV = nRT => n = PV/RT = (100atm)(50L)/(0.08206L·atm/mol·K)(308K)

∴ n(moles) = 1.978moles ≅ 2 moles gas (1 sig-fig) per volume data (= 50L) that has only 1 sig-fig. (Rule => for multiplication & division computations round final answer to the measured data having the least number of sig-figs).

Moles are the ratio of the mass and the molar mass of the substance. In a 50.0 L cylinder, 2 moles of gas are present at 100 atm and 35 degrees celsius.

An ideal gas equation states the relationship between the moles of the substance, temperature, pressure, and volume. The ideal gas equation is given as,

[tex]\rm PV = nRT[/tex]

Given,

The pressure of the gas (P) = 100.0 atm

Volume of the gas (V) = 50.0 L

Temperature (T) = 308 K

Gas constant (R) =  0.08206 L atm/mol K

Substituting values in equation moles (n) is calculated as:

[tex]\begin{aligned} \rm n&= \rm \dfrac{PV}{RT}\\\\&= \dfrac{100 \times 50}{0.08206 \times 308}\\\\&= 1.978\end{aligned}[/tex]

Therefore, 1.978 or 2 moles of gas are present.

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Answer:

In this process The more dense gases are collected in a gas jar. Carbon dioxide, Nitrogen dioxide are collected by this way. Air is displaced upward thus, this process is known as upward delivery

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Answer:

A. "All molecules are compounds, but not all compounds are molecules"

Explanation:

An example of a compound-molecule is oxygen. The elemenal is O, because the periodic table isn't describing molecules, it's describing atoms. The molecule is O2 because it takes 2 O atoms to make a molecule of oxygen.

The primary difference between a molecule and a compound is 'compounds must be composed of more than one type of atom​'.

Explanation:

So, from this, we can conclude that the primary difference between a molecule and a compound is 'compounds must be composed of more than one type of atom​'.

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Mass of a substance = Moles of a substance × molar mass of a substance

We have 0.94 moles of NaHCO3. The molar mass of NaHCO3 is the sum of the atomic masses of the elements comprising NaHCO3, which is approximately 84.007 g/mol.

The mass of 0.94 moles of sodium bicarbonate is therefore (0.94 moles NaHCO3)(84.007 g NaHCO3/mol NaHCO3) = 78.97 ≈ 79 grams of sodium bicarbonate.