Please help it’s due today. I will give brainliest.

Answer:

controlled by the Arabs, who brought frankincense and myrrh by camel caravan from South Arabia.

Calcium Chloride would have a charge of +2

Hopes this helps :)

Explanation:

Hassium belongs to d-block of the periodic table.

Answer:

It's actually Neutral

Explanation:

equal number of negative electric charges (the electrons) and positive electric charges (the protons).

Answer:

d

Explanation:educated guess

Answer:

it is a sacrafice to god so the spirtit can go free

Explanation:

Answer:

I believe it would be a sacrifice or a sacrificial ritual. hope this helped!! <3

Answer:

what is the question????

Answer:

If the pressure of the system increases then the boiling point will increase.

If the pressure of the system decreases then the boiling point will decrease. If there is no change in pressure then the boiling point will remain constant.

Explanation:

Answer:

1. a) 1.27 mol H₂SO₄

2. b) 19 g KCl

Explanation:

The grass method is an acronym for Given, Required, Application, Solution, Statement.  

1. a) Given, 125g H₂SO₄; Required, find the moles H₂SO₄; Application, 125g x molar mass of H₂SO₄, Solution, [tex]125g H2SO4 * \frac{1molH2SO4}{98.08gH2SO4} = 1.274469molH2SO4[/tex] Statement, Round to the lowest number of significant figures to get 1.27 mol H₂SO₄;

2. b) I am only show the equation for this one, but it is basically the same as the previous one. The molar mass of KCl is 74.55 g/mol.

[tex]0.25molKCl*\frac{74.55gKCl}{1molKCl} = 18.6375 gKCl[/tex]

Round to the lowest number of significant figures which is two to get 19 g KCl.

For 3 the unit converter between moles and molecules is 6.022 x 10²³ molecules/mol.

Let me know if you need more help.

Answer:

homogeneous mixture

Explanation:

The correct classification for air is a homogeneous mixture.

Material is referred to as a mixture when two or more chemicals combine without undergoing a chemical reaction.

Heterogeneous and homogeneous mixtures are the two types of mixtures.

While homogeneous mixtures seem consistent throughout, heterogeneous mixtures have clearly discernible components.

A solution, which can be a solid, liquid, or gas, is the most typical kind of homogenous mixture.

Mixtures are composed of two or more different substances that have not been chemically mixed. The following is a list of mixture properties.

Each of the components in a mixture retains its unique features.

Component separation is simple to carry out.

The component's relative weights vary.

The classification for air is 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide, and 0.07% other gases.

This classification for air has the properties of a homogeneous mixture.

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Answer:

D hope this helps

Explanation:

Answer:

d. what will happen to the freezing point of the water if salt is added?

Answer:

liquid

Explanation:

Answer:

liquid

Explanation:

Answer:

I literally just answered this question

Explanation:

Give me a brainliest

Answer: analyze the question so that you can get a correct answer

Explanation:

Answer:

torque =force*distance

The number of particles : 2.75 x 10²¹

A mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12  

1 mole = 6.02.10²³ particles  

[tex]\tt n=\dfrac{N}{N_o}[/tex]

N = number of particles  

No = Avogadro number (6.02.10²³)  

n = number of moles  

While the number of moles can also be obtained by dividing the mass (in grams) with the molar mass of element or molecule  

0.75 gram sample of Calcium Nitrate; Ca(NO₃)₂

MW of Ca(NO₃)₂ : 164.09 g/mol

[tex]\tt mol~Ca(NO_3)_2=\dfrac{0.75}{164.09}=0.00457[/tex]

The number of particles

[tex]\tt N=n\times N_o\\\\N=0.00457\times 6.02\times 10^{23}=2.75\times 10^{21}[/tex]

Answer:

ca +n2 is impossible to get trough a ca3 +n2 so you have to try to find a reasnable question like ca+n2 = ca3n2 then you need witch is the same but the chimacl blanice is off so when mixing the chimcals try to reduce the can2

but also try to make it be a better salution

Explanation:

hope that helps also good luck

Answer: Hydrogen

Explanation: The Bohr Atom is a very simplified model of the electron positions of each element of the Periodic Table. Each Row of the periodic table is represented by an orbit. Hydrogen and Helium are in the first energy level (row) of the periodic table and their Bohr Models would have one orbit.

Hope this helps! :)

Answer:

different forms of genes for a single trait

Explanation:

There are three main forms  of genes  that can exist for a single trait and they are:

A dominant allele is a stronger version of a gene that shows up when at least one copy of it is present in an organism's genetic makeup. It hides the effects of the weaker gene. In a person with two different alleles, the one that is more powerful decides how the person looks or behaves.

Recessive allele: A recessive allele is only expressed when there are two of the same recessive alleles present. It is hidden by a strong gene. The recessive allele can only be seen when a person has two copies of it.

Co-dominant alleles: When co-dominant alleles are together, both are shown. In this situation, neither gene is stronger than the other, and both play a role in what an organism looks like. One example of co-dominance is the ABO blood type system. In this system, both the A and B alleles are of equal importance.

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Answer:

Gas

Explanation:

Answer:

Be3As2

Explanation:

Answer:

C) Be3As2

Explanation:

A.P.E.X

Answer:

i think false

Explanation:

Centre of mass is the point at which the distribution of mass is equal in all directions, and does not depend on gravitational field. Centre of gravity is the point at which the distribution of weight is equal in all directions, and does depend on gravitational field

found it on google so it could be wrong

Answer:

True

Explanation:

I took a quiz and got it right

pls mark as brainliest.

Answer:

-3

Explanation:

The charge of the ion is determined by the number of protons and the number of electrons.

Protons are a positive + charge.

Electrons are a negative - charge.

We have 7 protons and 10 electrons.

+7 charge

-10 charge

-10 + 7 = -3 charge

Answer:

The answer is

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

From the question

N = 5.38 × 10²¹ atoms of sodium

We have

[tex]n = \frac{5.38 \times {10}^{21} }{6.02 \times {10}^{23} } \\ = 0.00893687...[/tex]

We have the final answer as

Hope this helps you

Answer:

Metals typically loose electrons and become cations

Explanation:

Metals are typically found towards the left hand side of the periodic table. They typically possess fewer electrons in their outermost shell compared to nonmetals.

As a result of this, when metals form chemical bonds with other elements, it is energetically more favourable for metals to loose electrons and form cations.

Answer:14

explanation: For CH3F, we have a total of 14 valence electrons. Hydrogen always goes on the outside of Lewis structures. And then Carbon is less electronegative than Fluorine, so let's put the Carbon in the center and the Hydrogens on the outside there, and the Fluorine on the top. We have a total of 14 valence electrons for CH3F.

Answer:Option D

Explanation:i took the test

Answer:

The answer is

Explanation:

To find the number of atoms of titanium , given it's number of moles we use the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

n = 0.075 mol

We have

N = 0.075 × 6.02 × 10²³

We have the final answer as

Hope this helps you