CHEMISTRY HIGH SCHOOL

What two sub-atomic particles are located in the nucleus of the atom?

Answers

Answer 1
Answer: Protons and Neutrons. Also star this answer please :)
Answer 2
Answer: Neutrons (netral charge) and Protons (positive charge) are in the nucleus wile Electrons (begitive charge) are outside the nucleus of an atom.

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952 grams of ammonium carbonate are dissolved to make 1750 mL of solution

Describe how to properly measure the volume of a liquid.

Answers

Use a graduated cylinder.
The best way to measure it usually is to use a beaker or graduated cylinder. 

What is 16.00 kPa in atm?

Answers

There are 101.325 kPa in 1 atm. You are given 16 kPa and convert it to atm. All you need to do is divide 16 kPa to 101.325 kPa and you will get 0.16 atm

Tin-126 has a half life of 100,000 years. How many years does it take toreduce 100 g of Tin-126 to 12.5 g?
100,000 years
200,000 years
50,000 years
300,000 years

Answers

Answer:

300,000 years

Explanation:

100g=0 years

50g=100,00 years

25g=200,00 years

12.5g=300,000 years
300’000 yes I think she is correct

Enter the molecular formula for butane, C4H10
express your answer as a chemical formula

Answers

The molecular formula for butane is c4h10, the chemical formula could be written as H3CCH2CH2CH3 I guess, are you supposed to draw it?

The chemical properties of organic molecules are determined by specific arrangements of atoms called _____________.

Answers

Answer:

Functional group

Explanation:

Functional group is specific group of atom or bond associated to an organic compound that determines the chemical properties of that compound. This atom is bonded in a certain way or specific arrangement to give the compound a peculiar physical and chemical characteristics.

Functional group like the alkyl group -CH3 is found in organic compound series like the alkane family. The chemical properties specific to the alkyl group will be active in the compound of alkane family because of the presence of the functional group Alkyl(-CH3).  The functional group also plays a major role in the chemical  reactivity of the compound. For example the functional group of alkyl  are often non reactive, this non reactive nature will definitely rub off on the chemical properties of the compound it is attached.

Functional group like -OH is usually found in Alcohol . Due to the presence of this functional group (-OH) alcohol possess a peculiar chemical properties. The compounds possess an hydrogen bond which invariably lead to the higher boiling points of the alcohol compounds.  Other functional group can be bonds like double bond found in alkene compound or triple  bond found in alkyne compound.

If one ball with a momentum of 50 kg·m/s hits a ball at rest and no other forces are acting on either ball, what's the total momentum of both balls after the collision? A. 0 kg·m/s
B. 25 kg·m/s
C. 100 kg·m/s
D. 50 kg·m/s

Answers

Answer:

The answer is (D) 50 kg·m/s   (PF Test)
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125 cm3 of a solution contains 0.25 moles of the solute. What is the concentration of the solution?
It's important to match your exercise shoes with the type of exercise in which you will be participating.