formation of water: 2H2 + 102 --> 2H20
How many moles of H2O can be produced from 7 moles of H2?




Help me please Answer or I’ll report

Answer:

Organisms that belong to the same species, form groups, and interact together in the same environment make the level of the population whereas a community has groups of different species living together in an environment. Species are the group of individuals that are genetically related to each other.

Answer:

C

Explanation:

Actually, arranged to the size of smallest to least atom radius size = C

Atomic sizes generally get smaller as you go from L to R across a row of the periodic table.

Answer:

Here are the following answers to the five questions:

(1) "Form only at boundaries between two continental plates."

(2) "A fault-block mountain"

(3) "Island arcs form when hot, fluid rock rises through thin spots in Earth's crust, whereas hotspot volcanoes form when two oceanic plate boundaries push against each other until subduction happens and the plates partially melt."

(4) "The fault plane runs from the top of the rock to the bottom of the rock at an angle greater than 45 degrees."

(5) "Segments of Earth's crust bent and doubled over, and moving wind and water gradually shaped the rock into gently sloping domes."

Explanation:

Answer:

Cu (s)  and AlCl₃ (s)

Explanation:

This reaction can be classified as a single-displacement reaction, aka. a single-replacement reaction. These reactions involve one element swapping out another element in a compound. In this reaction, aluminum is taking the place of copper (ii) in the copper (ii) chloride compound. Aluminum takes the place of copper (ii) specifically because aluminum is more likely form a cation than anion. Copper (ii) serves as a cation in the compound.

Al (s) + CuCl₂ (s) --> Cu (s) + AlCl₃ (s)

The final products are copper (ii) metal and aluminum chloride. The metal of copper (ii) is produced instead of the cation in order to maintain the neutral charge balance of the reaction. The chorine has a subscript of 3 because aluminum usually forms cations of a +3 charge while chlorines form anions with a -1 charge.

The balanced equation is:

2 Al (s) + 3 CuCl₂ (s) --> 3 Cu (s) + 2 AlCl₃ (s)

Answer:

Gamma rays

Since they have high penetrating power.

Answer:

A

Explanation:

Answer:

Explanation:

Answer

It tells you what method she used and what she wanted to accomplish.  She is using

        an absolute dating method to study a sample of basalt

So the answer you should post is F. F and the quotation above say the same thing.

Answer:

Stage 3 or long-term immersion hypothermia happens after 30 minutes or more. Cold water pulls heat from the body, and the body’s core temperature drops. This eventually leads to loss of consciousness and death.

Answer:

Which half-reaction equation represents reduction?

answer is 2

Answer:

B CU2+ +2e- -> Cu

Explanation:

reduction means something opposite of the word

reduction means an electron is GAINED in the part before the arrow

it's the " + 2e- " part of the equation before the arrow or "->" part

oxidation is the LOSING of an electron so it would show up to the right of arrow or "->" of the equation as "+2e-"

both reduction & oxidation reactions are called "redox"

in a battery

anode is oxidation

cathode is reduction

anode is positive

cathode is negative electrode

decomposing compounds is electrolysis.

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Answer:

the answer is C which says 1 and 2

The three macroscopic properties of a gas in terms of the microscopic nature of atoms and the molecules making up the gas is explained by the kinetic theory of gases. The macroscopic properties like pressure, volume and temperature are used to study a gas.

The kinetic theory of gases is a theoretical model which describes the molecular composition of the gas in terms of a large number of submicroscopic particles which include atoms and molecules. Gas is a combination of large number of atoms or molecules.

The kinetic theory of gases considers that the atoms or molecules of a gas are constantly moving point masses which contain a huge inter-particle distance and may undergo perfect elastic collisions.

1. Since the particles are in motion, the average kinetic energy is proportional to the temperature of the gas. So when the inflated balloon is placed in a freezer, the balloon shrinks due to decrease in temperature.

2. When balloon is kept outside in the sun, it will burst due to expansion of gases.

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Answer:

C. cohesion

Explanation:

The cohesive force between liquid molecules are responsible for the phenomenon known as surface tension

When an acid reacts in a reaction, it donates hydrogen ion as the only positive ion.

According to Bronsted-Lowry's definition, an acid is a substance that donates hydrogen ions as the only positive ion in reactions.

Following this definition, it can be concluded that when an acid reacts with another substance, it donates one or more hydrogen ions.

A good example is shown in the equation below:

[tex]HCl + KOH --- > KCl + H_2O[/tex]

In the reaction above, HCl donated a hydrogen ion.

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Answer:

a

Explanation:

just took the quiz and this is correct.

Answer:

In this type of neutralization reaction, the acids and bases are the reactants, since they are the materials that will react to form a new solution. The products are water and salt since they have been created following the reaction.

Explanation:

Neutralization occurs when a strong acid and a strong base come together in a chemical reaction to form water and salt.

In chemistry, acids and bases are measured on the pH scale, which ranges from 0 to 14. Pure water sits in the middle, at a neutral 7. Anything below 7 is an acid, and anything above 7 is a base. Often, solutions are either too acidic or too basic, so a reaction must take place in order to achieve neutralization.

That neutralization leads to the formation of water and salt. In chemistry, salt doesn’t necessarily just mean table salt. It is also a broader term that categorizes the compound that is created in the reaction between an acid and a base.

Answer:

4Fe+3O2- 2Fe2O3

the ratio: 3:2

x:3.95

x=5.92 moles of O2

Remember the relationship

So

The pairs are

And so on

Balanced one

Moles of Pentyne

Moles of H_2O

1mol releases 241.8KJ

2mol releases 241.8(2)=483.6KJ

Answer:

limiting reactant gives ................

Answer:

Limiting Reagent or Limiting Reactant

Explanation:

And to assess which reactant is which, we must usually have quantities of each reagent in a chemical reaction...and of course we should write a stoichiometric equation that is balanced with respect to mass and charge in order to assess the stoichiometric equivalence.

We could examine for instance, the combustion of methane gas, the which MAY have cooked your dinner … its combustion reaction is as shown...

[tex]CH_4(g) + 2O_2(g) rarr CO_2(g) + 2H_2O(g) + Delta[/tex]

And here conditions of COMPLETE combustion pertain; there is DIOXYGEN in excess, AND methane is the limiting reagent. A [tex]10*g[/tex] mass of methane represents a molar quantity of …

[tex](10.0*g)/(16.01*g*mol^-1)=0.623*mol[/tex]

And with respect to dioxygen we thus require...

[tex]0.623*mol*32.00*g*mol^-1=40*g[/tex]

...but this quantity (AND MORE) is available from the atmosphere....and the methane was the limiting reagent....

Answer:

B. Wall applies equal reaction force on hand

Explanation:

This is newton's third law. You push something, that something pushes you back with same force. The direction is opposite, so if I push a wall, the wall pushes me back with same force just in opposite direction (so wall towards me). This is why option A is incorrect b/c it says force in same direction as wall. C and D talk about unequal force which is incorrect.

Answer:Wall applies equal reaction force on hand

Explanation:

Answer:

Energy costs are high for many school districts. Therefore, unlimited free power generated by the sun can deliver huge cost savings when compared to grid-generated power. With a modestly sized solar array, cost savings are alike modest.

Explanation:

Answer:

Taste bufs

Explanation:

May be teenager or adult is the most probable answer because teenager and adult are fully developed species of human so they can have most sensitive taste bud

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT

The molarity of a solution that contains 4.9 g of [tex]H_2SO_4[/tex] in 400 ml of solution would be 0.12465 M

Define molarity of a solution.

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution.

Mathematically,

[tex]Molality = \frac{Moles \;solute}{olume \;of \;solution \;in \;litre}[/tex]

Mole of 4.9 g [tex]H_2SO_4[/tex]

= [tex]\frac{mass}{molar \;mass}[/tex]

= [tex]\frac{4.9 g}{98.08}[/tex]

= 0.0499

[tex]Molality = \frac{Moles \;solute}{ olume \;of \;solution \;in \;litre}[/tex]

[tex]Molality = \frac{ 0.0499}{0.4}[/tex]

= 0.12465 M

Hence, the molarity of a solution that contains 4.9 g of [tex]H_2SO_4[/tex] in 400 ml of solution would be 0.12465 M.

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Answer:

solo esto se responderte

Explanation:

Algunos solutos (por ejemplo, cloruro de sodio (NaCl) en agua) exhiben una solubilidad bastante independiente de la temperatura. Unos pocos, como el sulfato de cerio (III) y el carbonato de litio, se vuelven menos solubles en agua a medida que aumenta la temperatura.

Answer:

C

water has undergone a phase change and the composition of a substance was not changed

19. For the reaction, 2S+ 30=2SO3, how many moles of so3 will be produced from 12.5 g 02 and excess S?

:

For the reaction: 2S(s) + 3O2 -> 2SO2(g) How many moles of SO3 will be produced from 2.0 mol O2 and excess S?

Answer:

Explanation:

19. For the reaction, 2S+ 30=2SO3, how many moles of so3 will be produced from 12.5 g 02 and excess S?

The isomer of the molecule in the depicted image would be A.

Isomers are molecules with the same chemical formula but different arrangements of their component atoms. Isomers also have different properties.

The original molecule in the image has a triple bond with 4 carbon atoms. Thus, its isomers must also have a triple bond with 4 carbon atoms.

The only option with a triple bond and 4 carbon atoms in the image is option A.

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Answer:

B

Explanation:

Answer:

Use a catalyst, use more reactants, have a larger reactant surface area, more pressure, higher temperature.

Explanation:

Bromine is a chemical element with the symbol Br and atomic number 35. It is the third-lightest halogen and is a volatile red-brown liquid at room temperature that evaporates readily to form a similarly coloured vapour.

Answer:

Bromine is a nonmetal in group 7 or group 17, known as the halogens. It has 7 valence electrons.

So the correct answer is "nonmetal, 7 valence electrons"