Please help lol I dont understand it...

Answer:

An increase in temperature will result in increase in the average kinetic energy of the reacting particles(atoms). Which will therefore increase the frequency of their collision....

Using collision theory

The reaction rate increases......

Answer:

Yes , covalency fails to explain the formation of BeCl₂ and PCl₅.

Explanation:

covalent bonds are formed between two atoms  by sharing of outermost electrons in order to attain octet for attaining stability . To octet means to attain 8 electrons in their outermost orbit .

BeCl₂ :

Be has two electrons in its outermost orbit and each of Cl has 7 electrons .

Each of Cl shares one electron each with each of two electrons of Be . Cl atoms attain 8 electrons as octet . But Be attains only 4 electrons ( 2 of Be and 2 from Cl atoms ) . Hence octet of Be is not attained . So covalency fails in the formation of BeCl₂ .

PCl₅ :

P has 5 electrons in the outermost orbit . Each of these electrons shares with one  electron from  each of Cl atoms . Thus Cl attains octel state ( 8 electrons ) but P attains 10 electrons ( 5 + 5 ) , 5 of P and 5 from 5 Cl atoms .

Hence Octet of P is not attained . Hence covalency fails in the formation of PCl₅ .

Answer:the cation can't be drived from an acid

Explanation:

Example

HCL+MgOH2=MgCl2+H2O

The cation in the salt magnesium chloride is magnesium which is derived from the base and the anion chlorine from the acid hydrochloric acid. The same is true in water.

Please can you add as brainleist please!!!!!!!!!!!!!!!!!!!!

Answer:

The final volume of gas is 9.19 L.

Explanation:

Given that,

Volume = 10.0 L

Initial pressure = 1.50 atm

Final pressure = 1240 mmHg

We need to calculate the final volume of gas

Using formula of ideal gas

[tex]P_{1}V_{1}=P_{2}V_{2}[/tex]

[tex]V_{2}=\dfrac{P_{1}V_{1}}{P_{2}}[/tex]

Where, P₁ = initial pressure

P₂ = final pressure

V₁ = initial volume

Put the value into the formula

[tex]V_{2}=\dfrac{1.50\times10\times760}{1240}[/tex]

[tex]V_{2}=9.19\ L[/tex]

Hence, The final volume of gas is 9.19 L.

Answer:

I think it is b

Explanation:

but I'm not for sure that the answer is right

Answer:

1.2 miles

Explanation:

Answer:

different versions of existing forms

Explanation:

Answer:

The calorie is a unit of energy widely used in nutrition. For historical reasons, two main definitions of calorie are in wide use. The small calorie or gram calorie (usually denoted cal) is the amount of heat energy needed to raise the temperature of one gram of water by one degree Celsius (or one kelvin). The large calorie, food calorie, or kilocalorie (Cal, calorie or kcal) is the amount of heat needed to cause the same increase in one kilogram of water. Thus, 1 kilocalorie (kcal) = 1000 calories (cal). By convention in food science, the large calorie is commonly called Calorie (with a capital C by some authors to distinguish from the smaller unit). In most countries, labels of industrialized food products are required to indicate the nutritional energy value in (kilo or large) calories per serving or per weight.

Explanation:

Answer:

Critical thinking initiates the act of hypothesis.

Critital thinking initiates the hypothesis. By thinking you will come across a question you want to answer. In the conculsion crititcal thinking is used again to validate the hypothesis.

Answer:

The correct option is;

a. The particles will gain a large amount of kinetic energy

Explanation:

As the water temperature reaches 100°C, which is the boiling point for water at atmospheric pressure, the continued heating is then used to break up the strong inter molecular forces between molecules of the water  such that the individual molecules are free to move about and due to the high temperature, have gained considerable amount of kinetic energy for the to rise to appreciable height and to also spread.

The heat which converts water into steam is called latent heat as during the boiling phase, the temperature of the water remains constant.

d the particles will have the same average kinetic energy.

Answer:

Mass; mass; amount of space taken up.

Explanation:

Matter is anything that has mass and takes up space. The mass of an object measures the amount of matter or substance the object contains.

Volume is the measure of the amount of space taken up by the object.

The SI units for mass and volume are kilogram (kg) and cubic meter (m³) respectively.

Generally, matter exists in three (3) distinct phases and these are;

1. Solid: it is the state of matter in which the physical substance has a definite shape and fixed volume but not compressible. Examples of solids are pen, screwdriver, television, car etc.

2. Liquid: it is the state of matter in which the physical substance can be poured and takes the shape of its container. Also, liquids generally have a definite volume. Examples of liquids are urine, water, milk, blood etc.

3. Gas: it is the state of matter in which the physical substance has no definite shape or volume and as a result fills all available space. Also, gases are easily compressible and can flow. Examples of gases are hydrogen, oxygen, argon, nitrogen etc.

Answer:

15,000 mg

Explanation:

1 gram=1000 mg

15 gm=15,000 mg

Answer:

20

Explanation:

The atomic number is just the number of protons in an atom. So if the atom has 20 protons, the atomic number is also 20.

Your question has been heard loud and clear.

Both scientific laws and scientific theories are not based on hypothesis.

Because , scientific laws are proven and so they are real not hypothetical.

Whereas scientifc theories can be hypothetical.

Thank you

FeS+O2=Fe2O3+SO2

Iron (II) sulfide + Oxygen gas

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Answer:

1.  C

2.  C

3.  A

4.  C

5.  True

6.  C

Explanation:

1. C  The answer is conduction because the heat was transferred through direct contact.

2. C  The answer convection because the heat was transferred through a medium (liquid/gas).

3. A  The answer is conduction because the heat was transferred through direct contact.

4. C  The answer is radiation because the heat was transferred through thermal emission.

5. True.  This is because the air that is warmed rises, causing the cool air to replace it.  You can picture it like the scenario in question 2.

6. C  

Answer:

option a is not correct

What is the formula unit we are looking at?

This answer is incomplete plz edit it.

THX

Answer:

18 m/s

Explanation:

v = d/t = 90/5=18

Answer:

protons, neutrons and electrons are the sub atomic particles

Answer:

They did not repeat their tests multiple times.

Explanation:

It may seem that the question is incomplete. The complete question is as below: Dominic and Eva are using the same type of stopwatches to measure the time it takes for a chemical reaction to occur. They each use the same stopwatch to measure the time. These are their results:

Dominic: 78 seconds

Eva: 81 seconds

Why are their results unreliable and can lead to a pseudoscientific claim?

They did not repeat their tests multiple times.

They used the same type of stopwatch.

They did not change the reactants in their chemical reactions.

Only one person should have collected the data.

Dominic and Eva's results are unreliable and can lead to a pseudoscientific claim because they did not repeat their tests multiple times.

Repeating the test multiple times and finding the average of the measurement will minimize the chance of having error in the measurement and improve the accuracy of the outcome.

Thus, without repeated measurement, the reliability and the validity of the measurement would be in doubt.

Answer:

c. 32.0 mL

Explanation:

Buret can measure upto one tenth of a mL . That means it can measure upto one decimal point of a mL . Out of given measurement 32.0 mL reads upto one decimal point of mL so this reading seems to be the reading taken of a liquid in a buret.

Answer:

Explanation:

The density of a substance can be found by using the formula

From the question

mass of air = 1.2 g

volume = 4,555 mL

Substitute the values into the above formula and solve for the density

That's

= 0.0002634

We have the final answer as

Hope this helps you

Answer: one thing you may notice when you touch metal is a small electric shock, and depending on the temperature, it could be hot, or cold.

Answer:

Harry S. Truman

Explanation:

Because he was the 33rd president

Answer:

A box

Explanation:

In quantum mechanics, the atom is metaphorically described as a box. In fact, the Schrödinger wave equation is based on the three dimensional box metaphor of the atom.

Thus, a box provides a convenient treatment of the atom as it represents the fundamental components of the problem of atomic structure, hence the answer.

C. A box

Thus, the correct option is C.

Learn more:

brainly.com/question/6258301

Answer: by researching the experiment, it helps you make sure you get everything right. If you didn't research it, there's a possibility you can get the experiment wrong.

Answer:

A. Able to be lost or gained in chemical reactions.

Explanation:

Only electrons are lost or gained.

Able to be lost or gained in chemical reactions. Hence, option A is correct.

An atom contains a central nucleus surrounded by one or more electrons.

A chemical reaction is not created or destroyed, it simply moves electrons from one atom to another, and does not change the nucleus of the atoms. The total mass of the matter remains conserved in any chemical change.

Hence, option A is correct.

Learn more about atoms here:

brainly.com/question/1566330

#SPJ2

Answer:

FDA

Explanation:

Answer:

FDA

Explanation: it right ;)

Answer:

It can mean "boardwalk" or a "board of a school."

~Mia Sedillo~