Which property of the isotopes must be different?

the atomic number
the electric charge
the element name
the mass number

The chlorophyll processes the ingredients to make

(plant food) and

Answer:

oxygen

Explanation:

Answer:

C

Explanation:

The gas equation can be written as PV = nRT, where  

T is in kelvin, so 65 + 273 = 338K

P = 2.36 atm

Mass of Iodine gas = 254 g

R = 0.0821 (gas constant)

So,

P = (2.36*254)/(0.0821*338) = 21.63 g/L

"The density of iodine gas at 2.36 atm and 65.0 °C is 21.63 g/L."

What is density?

A substance's density will be its mass per unit volume. The most common symbol for density is D.

The formula of density can be written as:

D= P×MW/RT

where, P is pressure, MW is molecular weight( MW of iodine is 254) and R is gas constant( 0.082).

Now, put the value of given data in above equation.

D= 2.36×254/0.082×338= 21.63 g/L.

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Answer:

the first is the answer

Answer:

18 years old or when they become mature.

Explanation:

Answer:

a and i thinkc

Explanation:

Answer:

The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart

Explanation:

This should help you out

Answer:

Hey mate here's your answer ⤵️

a mark or character used as a conventional representation of an object, function, or process, e.g. the letter or letters standing for a chemical element or a character in musical notation.

noun: letter, character, sign of written communication

Something used for or regarded as representing something else; a material object representing something,

or a character of some kind

Example:

Often something immaterial; emblem, token, or sign: "$"<< the dollar sign is a symbol used to show / means money

Hope this kinda helped

Answer:

This can be proved by the following activity: Take some Iron fillings and dip them in the Copper sulphate solution. After some time you will notice that there is a colour change in the solution which is caused due to the displacement of Copper from it solution.

Explanation:

Answer:

The temperature remains constant

Explanation:

In a plot of temperature against time, it is easy to spot the points on the graph where a change of state is taking place.

During a change of state, the temperature does not not change with time. These are points that are plateaus on the temperature-time graph.

This is because, during phase change, the heat that is added is used in breaking intermolecular forces therefore a temperature change is not observed until the phase change is complete.

Answer:

see explanation

Explanation:

symbiology is (oxidation rxn || reduction rxn)

=> Zn°|Zn⁺² || Cu⁺²|Cu° => Zn°(s) + Cu⁺²(aq) => Zn⁺²(aq) + Cu°(s)

Answer: this is true

The two main postulates that was given by Antoine Lavoisier are, oxygen play an important role in combustion and the other is mass of the reactant and product is conserved. Therefore, the given statement is true.

According to Law of conservation of mass, mass can neither be created nor be destroyed. Mass can only be transformed from one form to another. The law of conservation of mass was given by Antoine Lavoisier. Every reaction in nature follow the law given by Antoine Lavoisier that is mass is always conserved.

According to this law, the number and types of atoms on reactant and product side is same. The statement " no atoms are gained or lost in a chemical reaction" is very much correct.

Therefore, the given statement is true.

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Answer:

Francium (Fr), heaviest chemical element of Group 1 (Ia) in the periodic table, the alkali metal group. It exists only in short-lived radioactive forms.

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Francium  belongs to alkali metals group.

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

Periodic table help a scientist to know what are the different types of elements are present in periodic table so that they can discover the new elements that are not being discovered yet.

Francium is a radioactive element, the electronic configuration of Francium is [ R n] 7s¹. The number of electron in outermost shell s is 1. This shows that francium belongs to group 1 of periodic table that is alkali metals.

Therefore, Francium  belongs to alkali metals group.

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Answer:

Because the gravitational force alters

Explanation:

Answer:

26.9

Explanation:

that is my answer I try to it

Hahaha hey! What’s up!

Oxygen can form a covalent (molecular) bond with nitrogen. Hence, option A is correct.

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms.

Two covalent bonds form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell.

Nitrogen atoms will form three covalent bonds (also called triple covalent) between two atoms of nitrogen because each nitrogen atom needs three electrons to fill its outermost shell.

Hence, option A is correct.

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check out this article i found it very helpful,

I couldn't find the answer to your question.

Answer: 2.0 atm

Explanation:

PV = nRT

P- the pressure of the gas

V- the volume it occupies

n- the number of moles of gas

R- the universal gas content

T- the absolute temp. of the gas

The pressure, in atmospheres, is exerted by 0.325 mol of hydrogen gas in a 4.08 L container at 35°C is 7.03atm.

The ideal gas law relates the pressure, volume, temperature, and number of moles of a gas through the equation:

PV = nRT

where P is the pressure in atmospheres, V is the volume in liters (L), n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin (K).

T = 35°C + 273.15 = 308.15 K

Substituting the given values into the ideal gas law equation, we get:

P × 4.08 L = 0.325 mol × 0.08206 × 308.15 K

Simplifying and solving for P, we get:

P = (0.325 mol × 0.08206× 308.15 K) / 4.08 L

P = 7.03 atm

Thus, the pressure exerted by 0.325 mol of hydrogen gas in a 4.08 L container at 35°C is 7.03 atm.

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Answer:

It is malleable, ductile, and an extremely good conductor of both heat and electricity. It is softer than zinc and can be polished to a bright finish. It is found in group Ib of the periodic table, together with silver and gold. Copper has low chemical reactivity.

Answer:

As the size of a star increases, luminosity increases. If you think about it, a larger star has more surface area. That increased surface area allows more light and energy to be given off.

Answer:

Mass

Explanation:

Answer:

its A

Explanation:

Answer:

C. Ions combine in only one ratio

Explanation:

Just took the quiz

Here are the steps hope it helps

Answer:

5 ohms of resistance

Explanation:

15/3=5