If 100.0g of nitrogen is reacted with 100.0g of hydrogen, what is the excess reactant? What is the limiting reactant? Show your work.

Answer:

Ashley, Ron, and Lindsay

Explanation:

Ultrasound technology is used for medical purposes by a scanning machine that allows to obtain living images of the inside of the body. For the type of issues they are going trough, ultrasound technology would help patients Ashley, Ron, and Lindsay. Ashley's under-developing fetus, Ron's kidney stones and, Lindsay's uterus cancer can be monitored by using ultrasound technology.

The ultrasound technology is a medical tool which can help a physician to evaluate, diagnose and treat medical conditions. Here the patients  with Ron, and Lindsay kidney stones and cancer can be detected by ultrasound technology. The correct option is D.

A term for the disease in which the abnormal cells divide without control and can invade nearby tissues is defined as cancer. The cancer cells can also spread to the other parts of the body through the blood and lymph systems.

Kidney stones are the hard deposits made of minerals and salts which form inside our kidneys. It is mainly caused due to little drinking of water, obesity, eating food with high salt or sugar content.

The ultrasound technology can detect cysts, tumors, obstructions or infections within or around your kidneys. It is also used by the medical professionals for many purposes including the pregnancy related problems.

Thus the correct option is D.

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The observation in the illustration remains in accordance with the law of conservation of mass assuming that moisture is present in the container.

The law state that mass can neither be created nor destroyed. However, mass can be converted from one form to another.

In this case, the ion was placed in a container of pure oxygen. Assuming that moisture is present, iron reacts with oxygen to form rust according to the following equation:

[tex]4Fe + 3O_2 + 6H_2O --- > 4Fe(OH)_3[/tex]

The rust formed will weigh more than the initial weight of the iron.

Without the presence of moisture, one can effectively conclude that the observation violates the law of conservation of mass.

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Answer:

Anhydrous copper sulphate.

Explanation:

In the presence of water anhydrous copper sulphate , a white powder, turns to blue.

Answer:

the car is slowing down l think so

Answer:

47

Explanation:

Answer:

E. O, S, Se, Te

Look up atomic size charts, go to row 6

Using the given formula, the density of the material is 2.015 g/mL

From the question, we are to determine the density of the material

From the given formula

Density = Mass / Volume

And from the given information,

Mass = 65.5 g

and volume = 32.5 mL

Putting the parameters into the equation,

Density = 65.5/32.5

Density = 2.015 g/mL

Hence, the density of the material is 2.015 g/mL.

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Answer:

The atomic number of Fe which is iron is 26

Explanation:

Organelles are the components of the cells with various functions and roles. The correct blanks are chloroplast, cell wall and vacuole, vacuoles, and mitochondria.

The organelles are the cell components that have well-defined structures and functions to perform the designated task in the cell activity. Chloroplast is the organelle that converts solar energy into chemical energy through photosynthesis.

The cell wall and the vacuoles provide the structural framework and shape of the cell. The vacuoles also store food pigments in the cell. The mitochondria of the cell convert the food source into energy like ATP.

Therefore, the correct blanks are chloroplast, cell wall and vacuole, vacuoles, and mitochondria.

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The decay rate of the radioisotope on the previous morning at 10 am is 38.7 million decays per second.

The initial mass of the radioisotope is calculated as follows;

N = N₀(¹/₂)^t/h

where;

24 M/s = N₀(¹/₂)^(22/32)

24 M/s = N₀(0.62)

N₀ = (24 M/s)/(0.62)

N₀ = 38.7 M/s

Thus, the decay rate of the radioisotope on the previous morning at 10 am is 38.7 million decays per second.

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Answer: 19 grams

Explanation:

percent by mass = (mass of part)/(mass of whole) * 100

this means that in this question, 12 = x/160 * 100, where x is the amount of NaCl.

this means 12/100 = x/160, and thus x = (160)(12/100)=19.2 grams

The closest option is B.

Answer:

Second Option: 19 grams

Explanation:

Total solution weight: 160 grams

percent of NaCl in the solution: 12%

You take these two numbers and multiply them with 12 being over 100:

160 * [tex]\frac{12}{100}[/tex] = 19.2 grams

and then just round to the nearest whole number: 19 grams

Answer:

.451 mole

Explanation:

PV = n RT     R = gas constany = .082057 L-Atm/K-mol      T is in units Kelvin

5 *2.32 = n (.082057)(40+273.15)

n=.451 mole

Find solubility

So half amount of solute is dissolved .

Hence the solution is saturated

Answer:

CoBr2

Explanation:

Hope it helps you :))))

have a good day

Explanation:

the sum of potential and kinetic energy

O tissues containing nerve cells for taste

Done!

The partial pressure of the hydrogen gas, if the water vapor pressure is 3.17kPa is 91.83 kPa.

Dalton's law of gas states that total pressure of the mixture of gas is equal to the sun of the partial pressure of the individual gas.

Given that,

Total pressure of hydrogen gas = 95 kPa

Partial pressure of water vapor = 3.17 kPa

Partial pressure of hydrogen gas will be calculated as:
Partial pressure = 95 - 3.17 = 91.83 kPa

Hence required partial pressure is 91.83 kPa.

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Answer:

S

Explanation:

Using periodic table (see those little numbers in the upper right?  Those are electron 'shells' .... look at the bottom one)

Ca has 2     Cl has 7       Ne has 8        S  has 6 in the outermost shell

Answer:

B-The reaction is endothermic because energy is absorbed during the

reaction

Explanation:

CaCO3 -> CaO + CO2

endothermic means cooling

its decomposition of limestone to calcium oxide (quicklime) and carbon dioxide on heating

byjus

Answer:

57)a)increase

b)increase

c)pressure

58)

Answer:

A. O, S, Se

Explanation:

They are all considered "other nonmetals," found in row 16 of the periodic table, and are chalcogens. The other options don't have as much in common.

Answer:

All objects can have the same size but have a different mass!

This is true, although it sounds fake. This is one example, there is a Neutron star, and Neutron stars are as big as a city, but they have a mass which is hundreds of times greater than our sun's mass. Because of them having so much mass, they are also having so much gravitational energy, which makes them also have gravity. They're so small, but have so much mass that they can do much. Even a drop of a neutron star can punch open the earth! It's true, so yes, it is possible for objects the SAME size to be having different masses according to that example.

But let's look on how they can have different mass.

They can have different masses becase of different densities. Put a iron ball inside water, and put an apple as close to the iron ball's side, what happens? The apple floats, becuase the apple's mass is less than the water, and the iron ball's mass is MORE than the water. So, because the iron ball is denser than the apple, that's why, it has more mass than the apple. The apple isn't much dense, it isn't as dense as water or the iron ball. But the iron ball is much more denser than the water. So because of the different material densities of the material, that's why it can have different masses.

Remember to Remember those 2 examples I gave you... (neutron star vs sun, iron ball vs apple on water)

Answer:

744.0 mL

Explanation:

Formula obtained from Charles Law :

⇒ [tex]\frac{V_{1} }{T_{1} } = \frac{V_{2} }{T_{2} }[/tex]

===============================================================

Given :

⇒ V₁ = 780.0 mL

⇒ T₁ = 30 °C = 303 K

⇒ T₂ = 16 °C = 289 K

=============================================================

Solving :

⇒ V₂ = 780 × 289 / 303

⇒ V₂ = 225420 / 303

⇒ V₂ = 744.0 mL (approximately)

Answer:

57.4 g

Explanation:

30.4 g Al will produce 57.4 g Al 2 O 3 30.4 g O 2 will produce 64.6 g Al

2 O 3 .The limiting reagent is aluminum, and the maximum amount of aluminum oxide that can be produced in this reaction is 57.4 g