How many grams of hydrogen gas are produced if 3.0 moles of magnesium are reacted with excess hydrochloric acid?

Answers

Answer 1

Answer          k

Explanation:    better luck


Related Questions

1. Which of the following best explains the motion of the box on the table?

Answers

Answer:

The box is at rest

Explanation:

not moving object

Which gas is given out during burning process

Answers

Answer:

Carbon dioxide

I hope it helps

#captainpower

pls make me brainliest

please answer as quick as possible

Q2. Which of the following elements is an alkali metal
A Potassium
B Chlorine
C Neon
D Krypton

Answers

Answer:

A - potassium........ M

Answer:

POTASSIUM

Explanation:

The diagram shows the structure of an animal cell.
Which number label represents the cell membrane? (5 points)

Answers

Answer:

1

Explanation:

The cell membrane is the protective, semi-permeable membrane surrounding a cell and its contents.

Answer:

I think 19 I think I don't know

What kind of reaction is photosynthesis?

Answers

Answer:

endothermic reaction

Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.

Explanation: hope this helps u!

Answer:

Endothermic reaction I believe.

Explanation:

It can't occur without the energy from the sun. The light is absorbed by the green pigment called chlorophyll which is in the leaves of the plant.

Shale is a sedimentary rock that can can be metamorphosed into slate by

Answers

The soft, clay-rich rock known as shale, when subjected to pressure becomes a harder rock called slate. ... Even coal can be metamorphosed; bituminous (soft) coal, a sedimentary rock, can be changed into anthracite, or hard coal.

How can you tell, from the drawings, that gravity is greater on Earth
than on Venus?

‼️ Physics‼️

Answers

Answer:

hi basically also also Aussie

There are three bulbs powered by a battery. What will happen if the middle light burns out.

Answers

Answer:

ABC

Explanation:

what would happen to a piece of iron if it were placed close to this device

Answers

Answer: c) it moves toward a piece of iron

Explanation:

3. Which of these statements is false?
A. Electrons have a negative charge
B. Electrons have a mass of 1 amu
C. The nucleus of an atom is positively charged
D. The neutron is found in the nucleus of an atom

Answers

the answer is B. ......

are soft pretzels, (like the auntie annes ones you get at the mall) made through the process of convection, conduction or radiation? thank youuu so much if you can answer ur the best

Answers

Answer:

I believe it's radiation, but please correct me if I'm wrong.

Explanation: Have a good day !

1. How many atoms of oxygen are present in 0.04 mole NaNO3?

2. How many moles of nitrogen atoms are present in 10.5g of N2O5?

3. How many atoms of oxygen are present in 50g of Fe(H20)2(S04)3? Please answer fast

Answers

Answer:

1. 7.227x10²⁴ O atoms

2. 0.1944 mol

3. 3.18x10²³ atoms

Explanation:

1. To solve this problem we need to use Avogadro's number, which states the number of molecules that are in 1 mol of a substance:

0.04 mol NaNO₃ * 6.023x10²³ molecules/mol = 2.409x10²⁴ molecules NaNO₃

There are 3 O atoms per NaNO₃ molecule, thus the answer is (3* 2.409x10²⁴) 7.227x10²⁴ atoms.

2. First we convert 10.5 g of N₂O₅ into moles, using its molar mass:

10.5 g N₂O₅ ÷ 108 g/mol = 0.0972 mol N₂O₅

There are 2 N moles per N₂O₅ mol, thus the answer is (2*0.0972) 0.1944 mol.

3. First we convert grams into moles:

50 g Fe(H₂O)₂(SO₄)₃ ÷ 379.85 g/mol = 0.132 mol

Then we use Avogadro's number:

0.132 mol * 6.023x10²³ molecules/mol = 7.95x10²² molecules Fe(H₂O)₂(SO₄)₃

There are 14 O atoms per Fe(H₂O)₂(SO₄)₃ molecule, so the answer is (7.95x10²² * 4) 3.18x10²³ atoms.

Please help me with this

Answers

323.5g - 301.2g = 22.3g is the change in mass.

A mole of carbon has the same number of atoms as a mole of beryllium.
O True
False

Answers

Answer:

False.

Explanation:

Carbon = 12

Beryllium = 9

good luck, i hope this helps :)

During ANY type of phase change, which of the following is TRUE? *

1. The temperature changes
2. The energy increases
3. The energy decreases
4. The temperature stays the same

Answers

the ones that are true are 1,2

how many modern periodic table contains​

Answers

Answer:

118 elements in the periotic table

Explanation:

:)

what are the good and bad effects of bacteria​

Answers

Answer:

they are bacteria

Explanation:

Answer:

Good bacteria keeps you healthy by supporting your immune function and controlling inflammation. Certain types of good bacteria can also: Help your body digest food. Keep bad bacteria from getting out of control and making you sick.

Explanation:

I hope this helps and pls mark me brainliest :)

What affects both deep water and surface currents in the ocean?

Answers

Answer:

These currents are on the ocean's surface and in its depths, flowing both locally and globally. Winds, water density, and tides all drive ocean currents. Coastal and sea floor features influence their location, direction, and speed. Earth's rotation results in the Coriolis effect which also influences ocean currents. -

Answer: The Coriolis effect

Explanation:

The tectonic plates float on the lower portion of Earth's crust?

Answers

Answer:

The tectonic plates comprise the bottom of the crust and the top of the Earth's mantle. There are ten major plates on Earth and many more minor ones. They float on a plastic-like part of the Earth's mantle called the asthenosphere.

Explanation:

Answer:

Yes

Explanation:

please help i don’t know this at all i am in a test

Answers

B . 5N in the opposite direction

The atmosphere insulates the planet by trapping which of the following?
Solid particles

Thermal energy

Ice crystals

Wind

Answers

Answer:

The answer is thermal energy

Explanation:

What determines the activity?

Answers

Answer:

what activity

Explanation:

Jennifer has a mass of 60 Kg and
is accelerating down the hill at a
rate of 3 m/s/s. What is the force
acting on Jennifer?

Answers

Answer:

the force acting on Jennifer is 180 N

Explanation:

The computation of the force acting on Jennifer is shown below:

As we know that

Force = mass × acceleration

= 60 kg × 3 m/s

=  180 N

hence, the force acting on Jennifer is 180 N

We simply applied the above formula

WILL GIVE NRAINLIEST!! NEED HELP FAST

7. (50 points) If you have 25 grams of Aluminum (Al), how many moles of hydrogen
gas (H) can you make? Show work!

Answers

Hello,

I believe this is (25 g Al) * (1 mol H / 1.008 g H) = 24.8015 mol H

Hopefully that was the right approach.
I thought that if one mole of Al is
26.982 g, then the numbers of moles for H (1.008 g/mol) would be about 25 mol.
If it doesn’t make sense or if you have resources/notes to which I can refer, I’ll see what I can do!

Good luck!

what is a respiratory system

Answers

Answer:

Body system that helps to breathe

Explanation:

Hope this helps! follow and message me in the comments if u need more explanation!

Answer:

The respiratory system consists of the set of organs and tissues involved in the uptake of oxygen from the atmosphere and the release of carbon dioxide generated during aerobic respiration. This gas exchange is also called breathing or external respiration.

Explanation:

how many valence electrons are transferred from each potassium atom to nitrogen in the formation of the compound potassium nitride?

Answers

Answer:3 electrons

Explanation:

it is also called solution

Answers

Explanation:

In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. ... The term "aqueous solution" is used when one of the solvents is water.

How many moles of each element are in one mole of Be(OH)2? (3 points)
a. 1 mole of beryllium, 1 mole of oxygen, 2 moles of hydrogen
b. 1 mole of beryllium, 2 moles of oxygen, 2 moles of hydrogen
c. 2 moles of beryllium, 2 moles of oxygen, 2 moles of hydrogen
d. 2 moles of beryllium, 1 mole of oxygen, 1 moles of hydrogen

Answers

Answer:

b

Explanation:

Answer:

B

Explanation:

particles of liquids have enough energy to separate from other liquid particles true or false

Answers

Answer:

False

Explanation:

I particles have enough kinetic energy to partly overcome the force of attraction between them, matter exists as a liquid. The particles can slide past one another but not pull apart completely. This explains why liquids can change shape but have a fived volume.

It is false hope this helps

HELP ASAP _is a device with a central catheter that is implanted in the subcutaneous tissue
A.Leuer lock
B.Port
C.Cannula
D.Catheter

Answers

........The answer is A
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Determine the position function if the velocity function is v(t)=3-12t m/s and the initial position is s(0)=3m. An object is in uniform circular motion and is moving at a speed of 2.3 m/s. How does the speed of the object change if the centripetal force andthe radius stay the same, but the mass quadruples?(A) Its speed is cut in half, because centripetal force is based on the square root of velocity.(B) Its speed is cut in half, because centripetal force is based on velocity squared.(C) Its speed is doubled, because centripetal force is based on the square root of velocity.(D) Its speed is doubled, because centripetal force is based on velocity squared. give reasons why after reimposing jizya tax, Aurangzeb abolished it in 1704 B. Directions: Identify what stage of humandevelopment is being described. Choosefrom the list of words inside the box.ADULTHOODINFANCYBIRTH1. A child learns to walk, talkand begin to be more self-sufficient atthis stage2. 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While the inaugural address was being delivered from this place, devoted altogether to saving the Union without war, insurgent agents were in the city seeking to destroy it without war seeking to dissolve the Union, and divide effects, by negotiation. Both parties deprecated war; but one of them would make war rather than let the nation survive; and the other would accept war rather than let it perish. And the war came.A. Both the Union and the Confederacy wanted to destroy their enemy.B. Both the Union and the Confederacy were responsible for the Civil War.C. Both the Union and the Confederacy desired total authority by eliminating the other.D. Both the Union and the Confederacy suffered huge economic losses due to the Civil War.E. Both the Union and the Confederacy had stockpiled deadly weapons for the Civil War. . 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