Chemistry High School

For the problem: Mg (s) + O₂ (g) ➞ MgO (g) if 4.3 g of magnesium reacts with 83 g of oxygen (O₂), which is the limiting reagent? *
4 points
magnesium
oxygen
magnesium oxide
dimagnesium dioxide

Answers

Answer 1

Explanation:

hope this can help youuu

For The Problem: Mg (s) + O (g) MgO (g) If 4.3 G Of Magnesium Reacts With 83 G Of Oxygen (O), Which Is

Related Questions

Calculate the atoms of hydrogen in 52.0 g of H2O.

Answers

Answer:

34.81 ×10²³ atoms

Explanation:

Given data:

Mass of water = 52.0 g

Number of atoms of hydrogen = ?

Solution:

Number of moles of water:

Number of moles = mass/molar mass

Number of moles = 52.0 g/ 18 g/mol

Number of moles = 2.89 mol

1 mole of water contain 2 mole of hydrogen.

2.89 mole of water contain 2.89× 2= 5.78 moles of hydrogen.

Number of atoms of hydrogen:

1 mole = 6.022×10²³ atoms

5.78 mol ×  6.022×10²³ atoms / 1mol

34.81 ×10²³ atoms

help with this question please i will mark you brainliest!!!

Answers

Answer:

b

Explanation:

if i’m correct it should be B

Q
a. Ahmed worked on his crops of wheat and maize to produce a better-quality crop (which gives a more yield). In detail, write down how he altered his crop into a better yielding crop.

b. What is the name of the process that Ahmed used to breed his new better-quality wheat and maize.

Answers

Answer:

.

Explanation:

ayo, have some points

Answers

Answer:

aha thank you :)

Explanation:

Answer:

thank you :)

Explanation:

write the name of the first twenty elements with their symbols and their atomic number​

Answers

Answer:

1 Hydrogen H

2 Helium He

3 Lithium Li

4 Beryllium Be

5 Boron B

6 Carbon C

7 Nitrogen N

8 Oxygen O

9 Fluorine F

10 Neon Ne

11 Sodium Na

12 Magnesium Mg

13 Aluminium Al

14 Silicon Si

15 Phosphorus P

16 Sulfur S

17 Chlorine Cl

18 Argon Ar

19 Potassium K

20. calcium Ca

Answer:

h - hydrogen (1)

he - helium (2)

li - lithium (3)

be - beryllium (4)

b - boron (5)

c - carbon (6)

n - nitrogen (7)

o - oxygen (8)

f - fluorine (9)

ne - neon (10)

na - sodium (11)

mg - magnesium (12)

al- aluminium (13)

si - silicon (14)

p - phosphorus (15)

s - sulfur (16)

cl - chlorine (17)

ar - argon (18)

k - potassium (19)

ca - calcium (20)

Do bacteria help people?? This is science but there is no tab

Answers

Answer:

Yes

Explanation:

Some bacteria is good for you like the bacteria in your digestive system, which helps with breaking down food and keeping you healthy

how does skin protect the body from pathogens?

Answers

Skin is a barrier that serves as one of the body's first lines of defense against harmful microbes. Specialized immune cells within skin tissue help to fight invading organisms. Yet the skin hosts diverse communities of beneficial bacteria, collectively known as the skin microbiota.

Answer:

It blocks pathogens from getting inside our body.

Explanation:

The skin is the biggest organ, it cover the whole body and organ system from any toxic things.

4C + Sg → 4CS
is this balanced or unbalanced?

Answers

It’s balanced........

The
the surface area of the reactants, the faster the reaction rate.
A. greater
B. lesser

Answers

i’m pretty sure the answer is a. greater

hope this helps!!

I pushed a 2 kg car with an 8 N force. Calculate the acceleration.​

Answers

Answer:

4 m/s²

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

f is the force

m is the mass

From the question we have

[tex]a = \frac{8}{2} \\ [/tex]

We have the final answer as

4 m/s²

Hope this helps you

Which statement best explains what happens to a leaf when it has lost much-needed water?

Answers

Answer:

its turgor pressure decreases

Explanation: This is also important because this function regulates water loss within the plant. Lower turgor pressure can mean that the cell has a low water concentration and closing the stomata would help to preserve water. :-)

When a leaf loses much-needed water, its turgor pressure would decrease. Hence Option A is Correct

What is Turgor pressure ?

Turgor Pressure is created in the cells of a leaf when there is enough water. The water stretches the cell membrane outward, creating a kind of pressure.

When the cells lose water, the cell membrane shrinks inward and loses the supporting pressure.

Thus, the turgor pressure created by the presence of water is lost by the absence of water.

The absence of water also affects the rate of photosynthesis and transpiration negatively and not positively. A leaf losing water has no bearing on the atmospheric pressure.

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true or false, the change from a gas to a liquid is condesation

Answers

Answer:

true

Explanation:

i hope this is right your welcome

Answer:

The definition of Condensation is the conversion of a vapour or gas to a liquid, so therefore, this can be proven as a true statement.

According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail
(a) creates a friction with the hammer.
(b) disappears into the wood.
(c) exerts an equal force back on the hammer.
(d) moves at a constant speed.

Answers

Answer:

C

Explanation:

When a hammer strikes and exerts force on a nail, the nail exerts an equal force back on the hammer. Option C. This is further explained below.

What is Newton’s third law of motion?

Generally, According to Newton's third law, when two bodies contact, they apply forces to each other that are equal in magnitude and opposing in direction.

In conclusion, Newton’s third law of motion certifies that the nail exerts an equal force back on the hammer.

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An organism is unicellular, reproduces asexually, and lives in a hot hydrothermal vent at the bottom of the ocean. This organism most likely belongs to the kingdom

Answers

The organism belongs in the kingdom of Archaea

Aluminum bromide and chlorine gas react to
form aluminum chloride and bromine gas.

Answers

Answer:

ok

Explanation:

Jessica is holding a ball. What happens when she lets go of the ball as a result of forces acting on it?

Answers

Gravity pulls the ball toward the ground

two or more atoms joined together form a _______

Answers

Answer:

When two atoms join together they make compounds

Explanation:

A molecule is formed when two or more atoms join together chemically. If atoms combine that are of two or more different elements, we call that a compound. All compounds are molecules, but not all molecules are compounds.

atoms are so small that approximately _______ of them can fit at the end of a needle?

Answers

Answer:

5 million million atoms can fit at the end of a needle

Answer:

Let's just say 5 million million hydrogen atoms could fit at the end of a needle.

Explanation:

Atoms are 100 picometers, and to compare, the amount of even 1 centimeter, a calculator can't even figure out how many picometers are in a centimeter because there is just too much picometers.

Which element forms an ionic compound when it reacts with lithium?

1. K
2. Fe
3. Kr
4. Br

Answers

i’m not quite sure but i think it’s #4


Calculate the speed of a bicycle
traveling 20 km in 2 hours. Show the
formula, and your work with the correct
units. HELP PLEASE AND HURRY

Answers

Answer:

10 km/hr

............

The speed of a bicycle is 10 km/hour or 0.27 m/sec.

What is the Speed?

The speed may be defined as the rate of change of position of an object in any direction. It is significantly measured as the ratio of distance to the time in which the distance was covered.  Speed is a type of scalar quantity that has only direction but no magnitude.

According to the question, the distance traveled by bicycle = 20 km or 2000 meters.

The total time is taken = 2 hours or 7200 seconds.  

Now, the formula for calculating the speed is as follows:

S = Distance/ Time = 20km/2 hours = 10 km/hour.

S = Distance/ Time = 2000 meters/7200 seconds = 0.277 m/sec.

Therefore, the speed of a bicycle is 10 km/hour or 0.27 m/sec.

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What type of compound is this?

Answers

Answer:sorry id ont known

Explanation:give m brianlest if you want

Which form of energy can be connected closely to climate change?
hydroelectric

coal

solar

wind

Answers

Answer:

coal

Explanation:

Hope this helps please mark brainliest

The ability to exert a force that causes an item to move is what is meant by the definition of energy as the "power to accomplish work." Even though the definition is unclear, the meaning is clear: energy is simply the force that moves things. Potential energy and kinetic energy are the two categories of energy.

Which source of energy has a direct impact on climate change?

Renewable energy is frequently cited as the most important shift the world can make to fend off the worst consequences of global warming. This is due to the fact that renewable energy sources like solar and wind don't produce greenhouse gases like carbon dioxide, which contributes to global warming.

Wind, sunlight, bioenergy (organic matter burned as fuel), and hydroelectricity, including tidal energy, are a few examples of renewable energy sources.

The ability to exert a force that causes an object to move is what the definition of energy as "power to accomplish work" refers to. Despite the ambiguity of the definition, the meaning is clear: energy is simply the force that moves things. The two types of energy are potential energy and kinetic energy.

To learn more about Renewable energy refer to:

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I need to know if is true or false please

Answers

Answer:

True

Explanation:

2.Choose the correct order of the layers of the Earth from the outermost to the innermost layer

crust, asthenosphere, lower mantle, lithosphere, core
crust, lithosphere, asthenosphere, lower mantle, core
crust, asthenosphere, lithosphere, lower mantle, core
crust, lithosphere, lower mantle, asthenosphere, core

Answers

A and C are your anwser

Answer:

A and C

Explanation:

I took the test

the force that holds paticles together in the atomic nuecleaus?

Answers

Explanation:

i believe you meant particles*

Which group of elements gain electrons?

Answers

Answer:

Non-metals tend to gain electrons

Explanation:

Nonmetals - they have high electron affinities and high ionization energies

Las Vegas Raiders' running back Josh Jacobs is 72 inches tall and has mass of 100 kg. Los
Angeles Rams' defensive tackle Aaron Donald is also 72 inches tall but has a mass of 130
kg. Josh runs the ball East, towards the goal line, quickly traveling 50 yards in
5.5 seconds. Josh then accelerates towards the goal line at 9 m/s2. Aaron accelerates
West, the exact opposite direction, towards Josh at 6.5 m/s2. They both meet with an
explosive collision at the 1 yard line.
In a paragraph, address the following questions. Calculate numerical answers to the
nearest hundredth and correct units must be included.
1. What is Josh Jacobs' speed?
II. What is Josh Jacobs' velocity?
III. How much force does Josh Jacobs create?
IV. How much force does Aaron Donald create?
V. By calculating the net force, does Josh Jacobs score the touchdown.
Explain why or why not?

Answers

Answer:

Josh is running at a speed of 9.09 yards per second.

Josh's velocity is 9.09 East.

Josh's force is 900 N.

Aaron Donald's force is 845 N.

Yes Josh scores the touchdown because he is faster and has more mass than Donald.

Explanation:

Josh scores the touchdown as he is heavier and faster than Donald.

Formulas are:

Force= mass x acceleration

Speed= distance divided by time.

Velocity= distance divided by time.

What is the name of an element that has a full octet?

Answers

Answer:

noble gases

The noble gases rarely form compounds. They have the most stable configuration (full octet, no charge), so they have no reason to react and change their configuration. All other elements attempt to gain, lose, or share electrons to achieve a noble gas configuration

Explanation:

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How many moles are in 2.43 x 1024 particles of Carbon Monoxide (CO)?

a.0.25 moles
b.4.04 moles
c.1.46 moles
d.2.53 moles

Answers

b.

(2.43*10^24)*1/(6.022*10^23)

PLEASE HELP, I WILL MAKE YOU THE BRAINLIEST!!!
3. Magnesium sulfate is added to sodium hydroxide to produce sodium sulfate and magnesium hydroxide (10 points)
a. Write the skeletal equation and Balance the chemical equation describing the reaction above.
b. What kind of reaction is this?
c. Rewrite the balanced chemical equation, adding state symbols for all compounds in the reaction.

Answers

Answer:

answer in the picture hi shirllleeyyyyy

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