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

Help fast please What is the definition of homeostasis?
A. Your body out of balance
B. Being sick
C. Your body not needing any regulation
D. Your body systems staying in balance

Answers

Answer:

I think its D

Explanation:

Answer:

D

Explanation:

It's B because homeostasis is the ability to maintain a relatively stable internal state that persists despite changes.

Hope this helps!!! If this is incorrect, I'm so sorry! Have a lovely day.

You mix 15g of water with 10 grams of sodium chloride. After the reaction occurs, how
many grams of your new substance do you have?

A) 15g
B) 25g
C) 20g
D) not enough information

Answers

Answer:

B) 25g

Explanation:

Every reaction must follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

In given example:

Water + sodium chloride   →   Product

15 g   +      10 gram       =              25 g

25 g           =      25 g

What will a medium mass star become at the very end of its life cycle

Answers

Once it becomes the white dwarf it eventually runs out of fuel and dies as a black dwarf.

Carbon tetrafluoride, CF, contains four identical C-F bonds. Fluorine is more
electronegative than carbon. How will this impact each of the bonds between carbon and
fluorine?
a. The electrons in each C-F bond will be more attracted to the carbon atom.
b. The electrons in each C-F bond will be attracted equally to both atoms.
C. The electrons in each C-F bond will be more attracted to the fluorine atom.
d. The electrons in each C-F bond will separate easily.

Answers

Answer:

C. The electrons in each C-F bond will be more attracted to the fluorine atom.

Arrange the following elements in order from lowest to highest first ionization energy : , Ar , Cs, Na *

Answers

Lowest Cs, Na, highest is At

Answer:

Lowest Cs, Na, highest is At

Explanation:

NaOH
+
AL-
Na3AlO3 +
H2
How many moles of NaOH are required to produce 405 moles of hydrogen?

Answers

Answer:

i have no idea and i dont get it

No idea makes no sense

I will give you Brainly if you awser correct if your gonna awser for points pl put I don’t know

Answers

Answer:

C

Explanation:

The answer is B. Trinitrogen Pentaoxide

Susan is investigating physical changes. To do this, she places some ice into a large bowl and seals it with a lid. She leaves the bowl on the counter for several hours until all of the ice has melted. Using a balance, Susan determines that the mass of both the water and the ice are equal. Why is the mass of the ice and the water the same? (SC.8.P.9.1)

Answers

Answer:

No mass loss

Explanation:

The mass of ice and the water in the different state are equal because the same of quantity of matter is present in both state of matter of matter.

In essence, the mass of the physical change process is conserved. When mass is conserved, matter is neither created nor destroyed but can be changed from one form to the other. This is in compliance with the law of conservation of matter. So, no mass was lost in the physical change process and the mass will remain the same.

Which of the following traits are inherited from parents when the genetic material found in genes is passed to offspring on the chromosomes located in egg and sperm?


A. Sharp Teeth
B. Penguins caring for young
C. All the above
D. Flower color

Answers

I believe it is B. I’m sorry if i’m wrong. Tell me if i’m wrong or right!

A compound is 39.97% carbon, 13.41% hydrogen, and 46.62% nitrogen. What is the empirical formula?

Answers

Answer:

CH4N

A compound is 39.97% carbon, 13.41% hydrogen, and 46.62% nitrogen.

Explanation:

Hope this helps.

Answer: CH4N is correct

Explanation:

39.97% carbon

13.41% hydrogen

46.62% nitrogen.

Which of the following atoms has the highest first
ionization energy?
a. helium
6. potassium
d. hydrogen
e. carbon

Answers

Answer:

Helium

Explanation:

The first ionization energy varies in a predictable way across the periodic table.

how much heat is absorbed when 15.0 g of liquid water is heated until the temperature increases by 16.0.

Answers

n snsnnsnansnannnans

What is the hybridization of the carbon in the HCN molecule?

Answers

Could you mark me as brainliest?

Answer: sp hybridization

an atom has 11 protons, 12 neutrons, and 11 electrons. what is the charge of the atoms nucleus?
A) +11
B) -11
C) 0
D) 23

Answers

Answer:

Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

Explanation:

You are sitting in the central park bleachers of a Major League baseball park. You see a batter strike a pitched ball. About 0.4 seconds later you hear the contact between the bat and the ball. In terms of the properties of light and sound waves, how do you explain the difference in the communications you receivedbabout the same event?

Answers

Answer:

See the answer below

Explanation:

The speed of light in air and space is faster than the speed of sound in the same media. Light travels with a speed of approximately 3 x [tex]10^8[/tex] m/s while sound can only travel at 343 m/s (at 20 [tex]^oC[/tex]).

Consequently, the visuals of a batter striking a pitched ball which travel by light and is perceived through the eyes would be seen before the sound of the strike.

The difference in the speeds of light and that of sound largely explains the difference in the communication received about seeing a batter striking a pitched ball before hearing the sound of the strike

what is the density of a liquid if it's volume is 125 mL and it's mass is 50g?

Answers

Answer:

0.4g/ml

Explanation:

density= mass/volume

density=50g/125ml

density=0.4g/ml

Help plz 15 pointsss

Answers

1. Transition metals
2. Halogen
3. Noble gas
4. Metals
5. Metalloids
6. Non metal

which information does the chemical formula co2 not give you?
A. number of valence electrons in each atom
B. ratio of atoms in the compound
C. total number of atoms in one molecule of the compound
D. type of elements in the compound

Answers

Answer:

A

Explanation:

Considering the definition of chemical formula, the correct answer is option A): number of valence electrons in each atom.

A chemical formula is the representation of the elements that make up a compound and the proportion in which they are found, or the number of atoms that make up a molecule.

In other words, a chemical formula is an alphanumeric expression that is used to indicate the composition of a chemical substance and that is constructed from the symbols of its constituent elements, affected by numerical subscripts that report the number of atoms of each element that it is part of the substance.

In summary, the correct answer is option A): number of valence electrons in each atom.

Learn more:

https://brainly.com/question/18452587?referrer=searchResultshttps://brainly.com/question/21406550?referrer=searchResults

Which formula represents an ionic bond? 1 NaCl 2 N2O 3 HCl 4 H2O

Answers

Answer:

1 NaCl

Explanation:

NaCl is sodium chloride, and sodium chloride is an ionic compound because it's held together with ionic bonds.

a tomato plant cell has 24 chromosomes how many chromosomes will each daughter cell have after the cell undergoes a mitotic division

Answers

Answer: 12

Explanation:

How many moles are there in 5.2x10^23 atoms of CO2?

Answers

Answer:

0.86 moles of CO₂

Explanation:

Given data:

Number of atoms of CO₂ = 5.2×10²³ atom

Number of moles = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

5.2×10²³ atom× 1 mol / 6.022 × 10²³ atoms

0.86 mol

Explain why the electron configuration of 2-3-1 represents an atom in an excited state?

Answers

Answer:

See explanation

Explanation:

If we look at the electron configuration closely, we will discover that the element must have had a ground state electron configuration of 2,4.

This is because, the innermost shell usually holds two electrons while the outer shells hold eight electrons each. The four electrons must be accommodated in the second shell in the ground state configuration of the compound.

However, when the atom is excited, one electron from this shell may move to the third shell to give the excited state configuration 2-3-1 as shown in the question.

FOR 50 POINTS & A BRAINIST*

1.) For an atom of sulfur, there are
A.) two electron shells with 6 valence electrons
B.) three electron shells with 6 valence electrons
C.) four electron shells with 6 valence electrons
D.) five electron shells with 6 valence electrons

2.) Which atom has four electron shells with 7 valence electrons?
A.) F
B.) CI
C.) Br
D.) I

3.) Which atom has three electron shells with 8 electrons in its outermost orbit?
A.) He
B.) Ne
C.) Ar
D.) Kr

4.) Which method should be used to draw electrons that are involved in a collision during a chemical reaction?
A.) Bohr's model
B.) Lewis dot model
C.) Addition model
D.) Subtraction model

Answers

Answer:

1. B

2. C

3. C

4. B

Explanation:

1. An atom of sulfur has an atomic number of 16. It has three electron shells and six valence electrons, therefore, it belongs to period 3, group VIA of the periodic table

2. Bromine has an atomic number of 35. It belongs to period 4 group VIIA of the periodic table. Therefore, it has four electron shells and seven valence electrons.

3. Argon has an atomic number of 18. It belongs to period 3, group IVA of the periodic table. Therefore, it has three electron shells and eight valence electrons.

4. The Lewis dot model use structures that represent the valence electrons of atoms within a molecule existing as lone pairs or when involved in bonding. They can be used to draw electrons that are involved in a collision during a chemical reaction.

Please help! Will mark brainliest!

Answers

Answer:

A

Explanation:

A is the answer to the question

The gas could be which of the following? Select all that apply. Hint: These gases are more dense than air. Nitrogen Neon Argon Carbon Dioxide Helium Hydrogen Propane Carbon Monoxide
​

Answers

Answer:

nitrogen, oxygen, carbon dioxide, argon, hydrogen, helium

Explanation:

A reversible reaction is said to be in equilibrium when
A)
all reactions stop leaving some reactant unused.
B)
the reaction goes to completion and no reactants are left.
9)
the rate of the backward reaction equals the rate of the forward reaction.
D)
the reaction rate of the backward reaction becomes larger than the rate of
the forward reaction.

Answers

Answer: C) the rate backward reaction equals the rate of the forward reaction.

Explanation:

How much oxygen (O) is in 5.41 × 106 atoms of oxygen

Answers

Answer:

They show you  how to do it sweetie

Explanation:

123456789 Common math

Why is sublimation such a critical component for the water cycle in cold climates?

Answers

The air is so dry that when it hits a snowpack, the frozen water evaporates, going directly from the ice to vapor and bypassing the liquid phase entirely. This is called sublimation, and it's a common way for snow to disappear in the arid West."

Answer:

Sublimation is the transition in physical state from solid (ice) to vapor with no intermediate liquid stage. In other words, the ice becomes water vapor without melting. Ideal weather conditions would be low humidity (to allow vaporization), high altitude (lower air pressure facilitates the transition), and strong sunlight (to provide the energy for the transition). High snow-packed mountain ranges offer all of these conditions. Since the temperature is too cold for evaporation, sublimation is needed to provide enough water vapor to feed the water cycle and promote precipitation elsewhere on the planet. Without it, the water would stay frozen in the snow and ice and reduce the amount of liquid water that would replenish the planet.

Explanation:

plato

H to I in the diagram indicates two layers of:

A. phospholipids
B. gated channel proteins
C. pore proteins
D. cholesterol

Answers

Answerrr issss ▼・ᴥ・▼BBB

Please help I will mark brainy

Answers

Answer:

the answer is c I took the test

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