Typically ____
can not be removed from the atom.
A)
electrons
B)
neutrons
C)
protons
D)
tachyons
I took the test it’s PROTONS

Answer:

Explanation:

1 mole of oranges contains 6.02 x1023 oranges. 1 mole of helium gas contains 6.02 x1023 helium atoms. 1 mole of water contains 6.02 x1023 water molecules.

...

Answer:

25194.56

Explanation:

You'll  need a scientifuc calculator

2.91*10^22*1 = 2.91E22

2.91E22-/6.02*10^23=25194.56

6.02*10^22 Is the Mole number

Answer:

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Answer: calcium, nitrogen and oxygen

Explanation:

Answer:

5444.89 grams of Fe

Explanation:

1) We need the chemical equation for Fe3O4 to find the mole ratio for Fe to Fe3O4. Chemical equation:

3Fe+4H2O → Fe3O4+4H2

The mole ratio of Fe to Fe3O4 is 3:1

2) Now, we find how many grams of Fe are needed to produce 32.5 moles of Fe3O4.

[tex]32.5 moles Fe3O4[/tex][tex]x \frac{4 mole O}{1 mole Fe3O4}[/tex] = 97.5 moles Fe needed to produce 32.5 moles of Fe3O4

3) Convert 97.5 moles of Fe into grams. The molar mass of Fe is 55.845g.

[tex]97.5 mole Fe[/tex][tex]x\frac{55.845g Fe}{1 mole Fe}[/tex] = 5444.8875g or 5444.89g.

Answer:

excess reactant

Explanation:

The excess reactant is the reactant in a chemical reaction with a greater amount than necessary to react completely with the limiting reactant. It is the reactant(s) that remain after a chemical reaction has reached equilibrium.

In a reaction containing two reactants, if one of the reactants is in excess, the other reactant is known as the limiting reactant which decides the yield of the reaction.

In a reaction, all the reactants have to be in correct stoichiometry to complete the reaction. To achieve the mole ratio of the reactants is very much important for the completion of a reaction.

If a reactant is insufficient in amount, then the reaction will stop as soon as this reactant is consumed. Hence, this reactant determine the yield of the product. This reactant which is not in correct stoichiometry for the complete reaction is called the limiting reactant.

The reactant which is excess in quantity thus does not have a role in the yield of the reaction is called the excess reactant. Whatever, the concentration of this reactant in extra, the reaction does not proceed after the consumption of limiting reactant.

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Answer:

The substances like CO2 and water move in and out of a cell by diffusion from the region of high concentration to low concentration. ... When the concentration outside the cell becomes low and it is high inside the cell, they moves out.

Answer:

Since a single replacement reaction involves the change of an atom by another, the reaction is a single replacement reaction.

The term chemical reaction is another word for chemical change. It involves an interaction between two or more chemical species leading to the formation of a new chemical species.

The reaction AB + C → CB + A is a single replacement reaction because The A in the reactant side is replaced by C while it becomes displaced.

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Answer:

single displacement

Explanation:

trust

Answer:

the answer for 5 is liquid

Explanation:

K2S + 4HNO3 → 2KNO3 + 2NO2 + S + 2H2O. Potassium sulfide react with nitric acid to produce potassium nitrate, nitrogen dioxide, sulfur and water. Nitric acid - concentrated

PLEASE MARK AS BRAINLIEST

The reaction of Potassium sulfide with nitric acid is a double displacement reaction.

A displacement reaction can be defined as one wherein a set of atoms is displaced by another atom in a molecule. For example, when the iron metal is added to a solution of copper sulfate, it displaces the copper metal.

[tex]A + BC \longrightarrow AC + B[/tex]

A single displacement reaction can be described as a kind of oxidation-reduction reaction when an element moves out of a compound, one element is replaced by the other in a compound.

Double displacement reactions occur mostly in aqueous solutions wherein the ions precipitate and the exchange of ions takes place. The double displacement reaction can be represented as:

[tex]AB+CD\longrightarrow AC+ BD[/tex]

The reaction between the potassium sulfide and nitric acid gives hydrogen sulfide and potassium nitrate.

[tex]K_2S (aq) + 2HNO_3 (aq) \longrightarrow H_2S(g) + 2KNO_3(aq)[/tex]

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Answer:

Natural resources are not evenly distributed all over the world. Some places are more endowed that others — for instance, some regions have lots of water (and access to ocean and seas). Others have lots of minerals and forestlands. Others have metallic rocks, wildlife, fossil fuels and so on.

Explanation:

Answer:

CO2 molar mass=44.01g

3 moles CO2 = 132.03g

Explanation:

CO2 molar mass = 12.01+2(16.00)=44.01g

3 moles CO2 * (44.01 g CO2)/(1 mol CO2)=132.03g

(Answer would be different depending on the number of decimals)

Answer:

i think am right  Molar mass of H3PO4 is 97.9952 g/mol Copy to clipboard. Compound name is phosphoric acid. Convert between H3PO4 weight and moles ...

Explanation:

Explanation:

Molar mass of H3PO4 = 97.99g/mol

Mass of 2.40 moles of H3PO4

= 2.40mol * (97.99g/mol) = 235.2g.

Answer:

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process. So, the answer is A.

Explanation:

I hope this helps. :D

Cellular respiration is different from photosynthesis as photosynthesis produces ATP, and cellular respiration produces sugars. Hence, option A is correct.

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Photosynthesis converts carbon dioxide and water into oxygen and glucose.

Glucose is used as food by the plant and oxygen is a by-product.

Cellular respiration converts oxygen and glucose into water and carbon dioxide.

Water and carbon dioxide are by-products and ATP is energy that is transformed from the process.

Hence, option A is correct.

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Answer:

B. Group 17

Explanation:

The element is Bromine. Its electron configuration is:

1s2 2s2p6 3s2p6d10 4s2p5  

You can see that its last orbital is 4p^5 for 5 electrons in the 4p orbital.

Answer:

The weight changes, but his or her mass does not.

Explanation:

The true statement from the given choices about an astronaut traveling from planet to planet is that the weight changes but his or her mass does not.

This is due to the difference in acceleration due gravity from one planet to the other.

Gravity from one planet to the other differs significant and so is the weight.

Answer:

In the gold crystal, the atoms are bonded by freely moving electrons. In the salt crystal, the atoms are bonded by the attraction of opposite electrical charges.

Explanation:

A.pex

A crystal of Gold (Au) has metallic bonding whereas a crystal of NaCl has ionic bonding.

Chemical bonding refers to the formation of a chemical bond between two or more atoms, molecules or ions to give rise to a chemical compound.

Ionic bonding occurs by transfer of electrons from one atom to another and is usually between a metal and a non metal atom. This type of bond is classically described as occurring when atoms interact with one another to either lose or gain electrons.

Metallic bonds are the chemical bonds that hold atoms together in metals.

Therefore, A crystal of Gold (Au) has metallic bonding whereas a crystal of NaCl has ionic bonding.

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The balanced equation :

LiI(aq) + AgNO₃(aq) --> AgI(s) + LiNO₃(aq)

Given

Word equation

Required

Balanced equation

Solution

There are 3 ways to express a chemical equation:

Skeleton equation for reaction above :

LiI(aq) + AgNO₃(aq) ⇒ AgI(s) + LiNO₃(aq)

If we look at this reaction, all the cations and anions have a charge of 1 (+1 or -1) so the balanced reaction between the skeleton equation and the balanced equation is the same

Answer:

Answer is on the pic

Explanation:

I hope it's helpful!

Answer:

G wind turbine

Explanation:

they get mechanical energy fron the wind the turns into electrical energy

Answer:

G is correct

Explanation:

just saying

Answer:

[tex]{\rm Zn^{2+}}\, (aq) + {\rm 2\; OH^{-}}\, (aq) \to {\rm Zn(OH)_2}\, (s)[/tex].

Explanation:

Rewrite only the species that exist as ions. Those species typically include:

In this reaction, both [tex]{\rm ZnBr_2}\, (aq)[/tex] and [tex]{\rm NaBr}\, (aq)[/tex] are salts. The state symbol "[tex](aq)[/tex]" suggests that both of these salts are soluble. Hence, both of these salts exist as ions and should be rewritten:

Similarly, the state symbol "[tex](aq)[/tex]" suggests that the base [tex]\rm NaOH[/tex] is also soluble:

On the other hand, the state symbol "[tex](s)[/tex]" suggests that the base [tex]{\rm Zn(OH)_2}\, (s)[/tex] is a precipitate and is not soluble. Rather, the bonds within [tex]{\rm Zn(OH)_2}[/tex] stay mostly intact, and this species would not exist as ions. Hence, do not rewrite [tex]{\rm Zn(OH)_2}\, (s)\![/tex] when deriving the ionic equation for this reaction.

Hence, the ionic equation for this reaction would be:

[tex]\begin{aligned}&\underbrace{{\rm Zn^{2+}}\, (aq) + 2\, {\rm Br^{-}}\, (aq)}_{\text{from ${\rm ZnBr_2}\, (aq)$}} + \underbrace{2\, {\rm Na^{+}}\, (aq) + 2\, {\rm OH^{-}}\, (aq)}_{\text{from $2\, {\rm NaOH}\, (aq)$}} \\ & \to \underbrace{{\rm Zn(OH)_2}\, (s)}_{\text{precipitate}} + \underbrace{2\, {\rm Na^{+}}\, (aq) + 2\, {\rm Br^{-}}\, (aq)}_{\text{from $2\, {\rm NaBr}\, (aq)$}}\end{aligned}[/tex].

Eliminate species that are present on both sides of the ionic equation to obtain the net ionic equation. A species should be eliminated if only if an equal number of this species are found on both sides of the ionic equation. Otherwise, subtract from the side with a larger number of that species.

For this reaction, the net ionic equation would be:

[tex]{\rm Zn^{2+}}\, (aq) + {\rm 2\; OH^{-}}\, (aq) \to {\rm Zn(OH)_2}\, (s)[/tex].

Answer:

Mass of barium nitrate needed = 25.74 g

Explanation:

Given data:

Molarity of solution = 0.197 M

Volume of solution = 500 mL (500 mL× 1 L /1000 mL = 0.5 L)

Mass of barium nitrate needed = ?

Solution:

Molarity = number of moles of solute / volume in L

0.197 M = number of moles of solute / 0.5 L

Number of moles of solute = 0.197 mol/L ×0.5 L

Number of moles of solute = 0.0985 mol

Mass of barium nitrate:

Mass = number of moles × molar mass

Mass = 0.0985 mol × 261.32 g/mol

Mass = 25.74 g

Answer:

One mole is the Avogadro's number of particles (atoms, molecules, ions or electrons) in a substance. Converting to moles is fairly easy because the conversion is always the same.

The smallest fundamental of an element is called an atom while two or more atoms join together to produce a molecule. Molecules are the fundamental of any given compound or a substance.

Yes, the method of converting molecules and atoms to moles are similar.

Therefore, the conversion to moles is easy and the same.

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Answer:

0.76L is the pressure of CO at STP

Explanation:

To solve this question we must use combined gas law:

PV = nRT

Where P is the pressure of the gas (1atm at STP)

V is volume (Our incognite)

n are moles of the gas (0.950g * (1mol/28g) = 0.034 moles

R is gas constant (0.082atmL/molK)

T is absolute temperature (273.15K at STP)

V = nRT/P

V = 0.034mol*0.082atmL/molK*273.15K / 1atm

V = 0.76L is the pressure of CO at STP

Answer:

Here are some of the differences between a mixture of iron and sulfur, and iron sulfide: the mixture can contain more or less iron, but iron sulfide always contains equal amounts of iron and sulfur. the iron and sulfur atoms are not joined together in the mixture, but they are joined together in iron sulfide.

Explanation:

Answer:approving new heart medications for public use

Explanation: