Chemistry Middle School

250 g H 2 SO 4 completely reacted with aluminum?
2AI(s) + 32504(aq)- AI2 (504) 3(aq) + 3H 2 (9)
0.85g
450g
290g
870g

Answers

Answer 1

Answer: 290 g of aluminium sulphate is produced.

Explanation:

To calculate the moles :

$\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}$

$\text{Moles of} H_2SO_4=\frac{250g}{98g/mol}=2.55moles$

The balanced chemical reaction is:

$2Al(s)+3H_2SO_4(aq)\rightarrow Al_2(SO_4)_3(aq)+3H_2(g)$

According to stoichiometry :

3 moles of $H_2SO_4$ produce = 1 mole of $Al_2(SO_4)_3$

Thus 2.55 moles of $H_2SO_4$ will require=$\frac{1}{3}\times 2.55=0.85moles$ of $Al_2(SO_4)_3$

Mass of $Al_2(SO_4)_3=moles\times {\text {Molar mass}}=0.85moles\times 342g/mol=290g$

Thus 290 g of aluminium sulphate is produced.

Related Questions

I'LL GIVE BRAINLIEST TO THE BEST ANSWER!!!!

Scenario:

Espresso Coffee Houses is designing a coffee mug that keeps liquids hot. The research department tested several different materials for their ability to keep a normal-sized cup of coffee hot the longest amount of time. The testing room temperature is approximately 25 degrees Celsius.

Prompt:
Write a scientific explanation to justify the selection of material, A, B, or C, used to create the cup that would keep the coffee the hottest for the longest period of time. (THIS IS YOUR CLAIM.)

What is your evidence (for the claim)?

What is your reasoning?

Answers

Answer:

So whats the question

Explanation:

HELP! only answer if you know 100% its correct

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Answer:

C. Crude oil is found below natural gas reservoirs.

Explanation:

Answer:

Crude oil is found below natural gas

Explanation:

Help pls!!!!!!! look on photo!

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Answer:

I believe that the answer is 2

Answer:

Explanation:

To find an epicenter of an earthquake, you look directly above the point at the center. The center, as we can see, is at point 3. If we move in a straight line up, we can see that the epicenter is at point 2.

You carry a 50-N weight up a flight of stairs that is 3 m high in 10 s. then you carry 40 N up two flights of stairs in 20 s. Finally, you carry 30 N up three flights in 45 s. Is the job that took the most power the same as the job that took the most energy? Explain.

Answers

No it is not the same you can use more power than the other but you’re using it for a shorter amount of time so your using less energy than if you where to go up 3 flights of stairs

Deanna stirred a teaspoon of sugar into a glass of warm water. The sugar completely dissolved in the water. Check any statement that is TRUE about the dissolved sugar.

(A) The sugar melts.
(B) The sugar loses mass.
(C) The sugar turns into water molecules.
(D) The sugar forms a mixture with the water.
(E) The sugar can be separated from the water.
(F) The sugar disappears and no longer exists.
(G) The sugar molecules are spread among the water molecules.
(H) The sugar breaks down into the individual atoms that make up sugar.
(I) The sugar chemically combines with the water to form a new substance.

Answers

Answer:

Explanation:

From my experience this is what happens when I put sugar in warm water glass

Deanna stirred a teaspoon of sugar into a glass of warm water. The sugar completely dissolved in the water. The statement that is true about the dissolved sugar is the sugar forms a mixture with the water. Therefore, option D is correct.

What do you mean by solubility ?

The term solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a specified temperature.

Temperature, pressure, polarity, and molecular size are all factors that influence solubility. For most solids dissolved in liquid water, solubility increases with temperature. This is due to increased vibration or kinetic energy of the solute molecules at higher temperatures.

Water is known as the "universal solvent" because it dissolves more substances than any other liquid. This is critical for all living things on the planet.

Thus, the dissolved sugar is the sugar forms a mixture with the water, option D is correct.

To learn more about the solubility, follow the link;

https://brainly.com/question/22185953

#SPJ2

Which point on the roller coaster's path represents the maximum (greatest) potential energy?

Answers

Answer:

Point A

Explanation:

The greatest point of the stored energy of an object is the time when it's in its highest point, just before falling.

Answer: A, because potential energy is determined on how high it is.

A student wants to determine the effect of mass on kinetic energy. She will drop two balls of the same size into a pool of water. Which investigation method should the student use?(1 point)

a. She should drop two balls of the same mass from different Hights.
b.she should drop two balls with different masses from the same Hights
c.she should drop two balls with different masses from different Hights
d.she should drop two balls of the same mass from the same Hights

Answers

I think the answer is C

I believe the correct answer is B. Not only because she wants to test different masses but dropping it for the same hight is the correct way to preform an experiment

Which of the following statements fully describes what an object may do when it experiences unbalanced forces? Select the two best answers.

A. It may change directions.

B. It will move at a constant speed.

C. It may slow down.

D. It may slow down or speed up.

E. It will stay stationary.

Answers

Answer:b

Explanation:

The answer is A, and c

Help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
what is is figure 1 and figure 2 and figure 3?

Answers

Answer:

Figure 1: Grassland

Figure 2: Tropical Rainforest

Figure 3: Tundra

Explanation:

Have a good day :)

Answer:

1- Grassland

2- Tropical rainforest

3-Tundra

Explanation:

When the speed of the bottle is 2 m/s, the KE is kg m2/s2. When the speed of the bottle is 3 m/s, the KE is kg m2/s2. When the speed of the bottle is 4 m/s, the KE is kg m2/s2. When the speed of the bottle is 5 m/s, the KE is kg m2/s2. When the speed of the bottle is 6 m/s, the KE is kg m2/s2.
instructions
In this part of the experiment, you will be changing the speed of the bottle by dropping it from different heights. You will use the same mass, 0.250 kg, for each trial, so record this mass in Table B for each velocity. Then, calculate the expected kinetic energy (KE) at each velocity. Use the formula KE = mv2,
where m is the mass and v is the speed. Record your calculations in Table B of your Student Guide.

Answers

Answer:

Based on the given instructions, you need to calculate the expected kinetic energy (KE) at each velocity using the formula KE = mv^2, where m is the mass and v is the speed. The mass is given as 0.250 kg.

Table B: Calculation of Kinetic Energy (KE)

Speed (m/s)Mass (kg)KE (kg m^2/s^2)20.2500.50030.2500.75040.2501.00050.2501.25060.2501.500

To calculate the kinetic energy at each velocity, multiply the mass (0.250 kg) by the square of the velocity.

For example, when the speed of the bottle is 2 m/s: KE = (0.250 kg) * (2 m/s)^2 = 0.250 kg * 4 m^2/s^2 = 1.000 kg m^2/s^2

Perform similar calculations for the other velocities and record the results in Table B.

Answer:

Explanation:mass of the bottle in each case is M = 0.250 kg

now as per given speeds we can use the formula of kinetic energy to find it

1) when speed is 2 m/s