plz help with this........​

Answer:

F= -1 (group 7A)

Ca= +2 (group 2)

Explanation:

oxidation #= # electrons atom gains/loses to form chemical bond

>assigned to atoms in oxidation-reduction rxn to indicate ability to donate/ gain e-

> positive oxidation #= loss of e-, negative= gain of e-

rules:

all group 2 elements (ca) have an oxidation state of 2+

group 7A (F)= -1 charge (needs to gain 1 e- to complete octet)

Answer:

8

Explanation:

Answer:

1. Vegetable oil

2. Water

3. Dish soap

4. Corn syrup

5. Honey

Answer:

A. ionizing energy increases

A tabular form in which the chemical elements are positioned according to the chemical and physical attributes is called the periodic table. The horizontal rows from left to right is referred as periods in the table.

The correct option is:

Option A. Ionization energy increases

This can be explained as:

Therefore due to the high proton number, the ionization increases across the period.

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Answer:

the answer is 1s22s22p63s23p1

Answer:

hahahaha

Explanation:

hahahahahhahahaha soooo funny

Answer:ice crystals

Explanation:

Answer:

1:Without friction, we would not be able to stop walking since we would just keep slipping like on ice.

2:Without friction, objects would just slip and fall with a simple blow of air

3:And finally, without friction, we wouldn't be able to use machinery like cars and etc since they would just fly off

Explanation:

Friction can be a useful force because it prevents our shoes from slipping on the pavement when we walk and stops car tires skidding on the road. When you walk, friction is caused between the tread on shoes and the ground. This friction acts to grip the ground and prevent sliding. Sometimes we want to reduce friction.

Answer: Fusion and fission are similar in that they both release large amounts of energy. Nuclear fusion is a process in which two nuclei join to form a larger nucleus. Nuclear fission is a process in which a nucleus splits into two smaller nuclei.

Explanation:

Answer:

commission

Explanation:

Employers benefit from paying a commission to their employees because it means that they only pay the employee if there is a sale. ... It also improves the cash flows of the business because it means that employees are only paid when money is coming in from a sale.

If i were a maneger I would love commision For the reason that is stated above, but if I was just an employe I would rather work from tips.

False, frogs cannot see in all directions.

Answer:

Each parent's half of the genes acquired  by the offspring. They  have two of each chromosome and hence two alleles of each gene, and one acquired from each parent.

Answer:

Explanation:

budding

Figure 13.3 (a) Hydra reproduce asexually through budding: a bud forms on the tubular body of an adult hydra, develops a mouth and tentacles, and then detaches from its parent. The new hydra is fully developed and will find its own location for attachment.

Answer:

Propane, octachloro- | C3Cl8 - PubChem

The name of C3Cl8 is octachloropropane. It is a covalent bond.

Covalent bonds are formed when two atoms share electrons. In the case of octachloropropane, the carbon atoms share electrons with the chlorine atoms. The electrons are shared unequally, so the bond is polar covalent.

The name octachloropropane is derived from the Greek words "octo" (eight) and "chloro" (chlorine). The prefix "octa" refers to the number of chlorine atoms in the molecule. The suffix "propane" refers to the three carbon atoms in the molecule.

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Answer:

I think it is A

Explanation:

Because if you think about is Kinetic energy is motion

so i think it is

Its  motion

Answer:

A) an anion is an ion with a negative charge

B) a cation is an ion with a positive charge

The rest are bonds and do not pertain to the question

Answer:

a state of balance between continuing processes.

Explanation:

Dynamic equilibrium only occurs in reversible reactions, and it's when the rate of the forward reaction is equal to the rate of the reverse reaction.

Answer:

Land and sea breeze

Explanation:

This uneven warming of the land during the day results in the phenomenon called land and sea breeze.

Answer:

Hydrated chromium(III) phosphate or chromium(III) phosphate tetrahydrate.

Answer:

the IUPAC name is chromium(III) phosphate pentahydrate.

Answer:

3.4L

Explanation:

Given parameters:

Initial Volume of gas = 6.8L

Initial temperature of gas  = 325°C = 325 + 273  = 598K

Final temperature  = 25°C = 25 + 273  = 298K

Unknown:

Final volume  = ?

Solution:

To solve this problem, we apply the Charles's law. It can be expressed as;

           [tex]\frac{V1}{T1}[/tex]   = [tex]\frac{V2}{T2}[/tex]

V and T are volume and temperature

1 and 2 are initial and final states

Now insert the parameters and solve;

           [tex]\frac{6.8}{598}[/tex]   = [tex]\frac{V2}{298}[/tex]  

          2026.4 = 598V2

          V2 = 3.4L

Answer:

their is nothing their btw just letting you know

Answer:

2.79g

Explanation:

Answer:

The person writes a coefficient of 2 in front of Fe2O3 but then writes a 4 for the number of iron (Fe) atoms. Explain this difference.

Explanation:

The iron oxide Fe₂O₃ is the limiting reagent while carbon (C) is the excess in the given reaction.

A limiting reagent can be described as a reactant that is completely exhausted from the reaction mixture at the completion of a  reaction and is also named a limiting reactant.

When reactants in the chemical reaction are not taken in stoichiometric quantities, the limiting reactant will determine the maximum amount of product that can be formed in a chemical reaction from the reactants.

Given, a balanced chemical equation of the reaction between iron oxide and carbon is:

[tex]2 Fe_2O_3 + 3 C\longrightarrow 4 Fe + 3 CO_2[/tex]

Given, the amount of the iron oxide = 200 g

The molecular mass of the iron oxide = 159.69 g/mol

The number of moles of iron oxide = 200/159.69 = 1.252

Given the mass of the carbon, = 300 g

The number of moles of carbon = 300/12 = 25

If 2 moles of iron oxide react with carbon moles = 3

1.252 moles of Fe₂O₃ will react with carbon = (3/2) × 1.252 = 1.878 mol

Therefore, Fe₂O₃ is the limiting reactant and carbon is the excess reactant.

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The ideal gas law fails at low temperature and high-pressure because the volume occupied by the gas is small, therefore the inter-molecular distance between the molecules falls. And hence, an attractive force can be seen between them.

The ideal gas law states that the pressure, volume, and temperature of a gas are directly proportional to each other, as long as the number of particles and the mass of the gas remain constant. So long as the number of particles and gas mass remain constant.

The ideal gas law can be utilized to calculate the volume of gases produced. The ideal-gas equation often is used to interconvert between volumes and molar amounts in chemical equations.

At high pressures, the molecules of a gas are crowded closer together, and the amount of vacant space between the molecules is reduced.

Thus, gases behave least like ideal gases at low temperature and high pressure.

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Answer:

less concentrated

Explanation:

because it will get dissociated into more ions