Which is the correct formula for the ionic compound that results from these two atoms? PLS HELP!!!

Answer:

1. C

2. A

3. A

Explanation:

Answer:

C

Explanation:

Alcoholism is the inability to control drinking due to both a physical and emotional dependence on alcohol.

Answer:

C

Explanation:

Answer: The answer is C

Explanation:

Answer:

103 so easy so free dogwater

Explanation:

Mass percentage does not have any unit as numerator and denominator contains the same unit. The mass of  rock is 2.56×10⁶g when it contains 1.0 x 10³ kg of iron in it.

Mass percentage represents the the percentage of each element that is making a particular compound.

Mathematically,

Percentage of mass = (component’s mass ÷ total mass) x 100%

Percentage of mass of ferric oxide is =  78% by mass in rock

From this we can interpret the following

100 g of rock contains = 78gram ferric oxide

(100÷78)g of rock contains= 1 gram of ferric oxide

mass of iron in rock =1.0 x 10³ kg = 1.0 x 10⁶ g

(100÷78)×1.0 x 10⁶ g of rock  = 1.28×10⁶g of ferric oxide

now 1 mole of ferric oxide contains 2 atoms of iron, so the total mass of iron is 1.28×10⁶g ×2=2.56×10⁶g of iron.

Therefore the mass of  rock is 2.56×10⁶g when it contains 1.0 x 10³ kg of iron in it.

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Answer:

I think you would pretty much get the answer wrong.

You won´t get full credit. sorry for your wrong test answer, :(

Explanation:

The correct answer would be copper and mercury do NOT react with hydrochloric acid.

Answer:

The structure of the atom.

Explanation:

The correct answer is - The structure of the atom.

Reason -

An atom is the smallest unit of matter that retains all of the chemical properties of an element.

Answer: a. 249.5 g/mol

b. 1.996 g

c. Measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve in water until the volume is 400 ml

Explanation:

Molar mass is the sum of atomic masses of all the elements present.

Thus molar mass of [tex]CuSO_4.5H_2O[/tex] = 1(63.5)+1(32)+4(16)+5(18) = 249.5 g/mol

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

To calculate the number of moles for given molarity, we use the equation:

[tex]\text{Molarity of the solution}=\frac{\text{given mass of solute}\times 1000}{\text {Molar mass of solute}}\times \text{Volume of solution in ml}}[/tex]

[tex]0.02mol/L=\frac{x\times 1000}{249.5g/mol\times 400}[/tex]

[tex]x=1.996 g[/tex]

c. We need to measure 1.996 g of [tex]CuSO_4.5H_2O[/tex] and dissolve it in water to make the volume 400 ml.

Answer:

Boiling point, temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapour of the liquid; under this condition, addition of heat results in the transformation of the liquid into its vapour without raising the temperature. Water at its boiling point.

Explanation:

g00gle worls

Answer:

the atomic number of the atom can be determine through the number of protons in the nucleus

The protons are usually the atomic number.

Answer:

250 ml

Explanation: I got it right on the lab.

The size of the volumetric flask that would you use to create a 1.25 M solution using 29.75 g of MgCl₂ is 250mL.

How do we calculate volume of the solution?

Volume (V) in liter of the solution will be calculated by using the molarity (M) formula as:

M = n/V, where

n is the moles of the solute and it will be calculated by using mass as:

n = W/M, where

W = given mass

M = molar mass

Moles of 29.75g of MgCl₂ = 29.75g / 95g/mol = 0.313 mol

Given that molarity of solution = 1.25M

On putting values on the equation of molarity we will get the value of volume as:

V = 0.313 / 1.25 =  0.2504 L = 250mL

For the preparation of 250 mL of MgCl₂ solution we required the volumetric flask of 250 mL.

Hence volumetric flask of 250mL is required.

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Answer:

True

Explanation:

Generally makes sense.

Answer:

To remove waste products

Explanation:

I think

Answer:

to remove waste products

Answer:

Mercury chloride's(HgCI2) empirical formula is HgCI.

Explanation:

Answer:

0.0389757845886336

Explanation:

Answer:

answer

Explanation:

explination

Answer:

it disappeared loll jk

it obviously dried

well you may Mark me as brainliest

Answer: the moons gravitational force

Explanation:

Answer:

Two objects are in thermal equilibrium if they are in close contact that allows either to gain energy from the other.

Answer: The Objects have the same temperature

Explanation: i just took the test

Answer:

D because it is in a fixed position

Answer:

Well I know that the first one is true.

Explanation:

Answer:

1. TRUE

2. FALSE

3. C

Explanation:

In modern times, we know that the elements in a given group (also known as a family or column) have the same number of valence electrons, with ground state configurations having a consistent pattern, for instance:

F 1s2 2s2 2p5, Cl 1s2 2s2 2p6 3s2 3p5, Br 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5, etc.

Of course, the ground state configurations play a major role in determining how an element reacts and what compounds it forms. Thus, the elements in a given group have similar properties.

The structure of the table also predicts how the properties vary. For instance, atomic radius increases down a group as does metallic character.

Explanation:

Answer:

A

Explanation:

Because It's dense meaning that it doesn't burn

Explanation:

https://youtu.be/f_kgUUaMZlw

Answer:

4s, 3d, 4p

Explanation:

(3d,4s,4p) and (4p, 3d, 4s) both are decreasing energy, while (4s,4p,3d) is incorrect order it should be (4s,3d,4p).

Answer:

We can tell by how the continents look. Scientists who propose the pangea theory have said this. You can see for yourself because all the continents look like puzzle pieces you could put together. Scientists can also tell from the species. For example, let's say a scientist found a bone of a creature at the edge of a continent, the edge of another would have the same species. They have also calculated that the continents in itself are still splitting apart, but very slowly. The reason they split up was because tectonic plate movements.

Answer:

I'm thinking its "Your friend had colder winters than you do."

Explanation:

It is not "Your friend has warmer winters than you do." Or "You Have less precipitation than your friend does." I was doing this quiz before that had this question and its not those.

In the ocean side the the winter will be colder by the ocean breeze in the day time. The location of your friend farther from the ocean will have  warmer winters than you.

Any wind that flows from a big body of water onto or onto a landmass is called a sea breeze or an onshore breeze. Sea breezes form as a result of changes in air pressure brought on by the different heat capacities of water and dry land. Sea breezes are therefore more confined than prevailing winds.

A sea breeze is frequently seen along coasts after sunrise because land warms up far more quickly than water does when exposed to solar radiation. While dry ground also cools faster than water, a land breeze or offshore breeze has the opposite effect.

In winter seasons, along with the sea breeze make the climate more colder than that in locations farther from oceans. Hence, option b is correct.

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Answer:

In a solid, they're really close together and vibrate a LITTLE, in a liquid they're kinda close together but change movement because water will change shape depending on the container they're in. For gas they are spread far from each other and vibrate A LOT

Explanation:

Answer:

According to the stoichiometry, the theoretical yield is 11.5 grams. Multiplying this by 0.650, you get 7.48 grams.

Explanation: