CHEMISTRY HIGH SCHOOL

Which product forms from a reaction between beryllium (Be) and arsenic (As)?A. BeAs2
B. BeAs
C. Be3As2
D. Be2As3

Answers

Answer 1
Answer:

Answer:

Be3As2

Explanation:
Answer 2
Answer:

Answer:

C) Be3As2

Explanation:

A.P.E.X

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Several substances are labeled on the pH scale below.A p H scale is shown ranging from 0 the top to 14 at the bottom. The approximate locations of substances are: gastric fluid, 1.2; lemon juice, 2.2; milk, 6.5; blood, 7.5; seawater, 8; milk of magnesia, upper M g (upper O upper H) subscript 2 solution, 10.5; household lye, upper N a upper O upper H solution, 13.5.

Which substance has the lowest [H+] concentration but is still considered an acid?

Answers

Answer:

(A) - Milk

Explanation:

Acids cannot go below the 7 mark, and milk is the last one right before 7

Air bags, which act as safety devices in cars, contain solid sodium azide. On impact, the sodium azide releasesnitrogen gas, which expands the air bag. The main benefit of using a gas instead of another type is that —
A. gas molecules are subject to ionic bonding
B. the separation of gas molecules is much greater than the volume they occupy
C. gases won’t explode the bag on very hot days
D. gas molecules don’t transfer excess Kinetic Energy

Answers

The answer is; D

The reason for this is because gases are compressible . Much of the energy of the impact created when your head hits the air bad is absorbed by the gas (through compression and rarefaction) hence reducing the damage to the head in case of an accident.

What is the atomic mass of one mole of O?

Answers

Oxygen's atomic weight is 16.00 amu. 1 mole of oxygen is 6.02 x 10^23 atoms of oxygen 1 amu = 1.661 x 10^-24g. I hope this helps you. The correct answer for this question is "1.661 x 10^-24g".

Potassium hydroxide is classified as an Arrhenius base because KOH contains(1) OH- ions (2) O2- ions (3) K+ ions (4) H+ ions

Answers

Answer : The correct option is, (1) OH^- ions.

Explanation :

According to the Arrhenius concept, an acid is a type of substance which ionizes in water to gives H^+ ions (hydronium ions or hydrogen ions) and a base is a type of substance which ionizes in water to gives OH^- ions (hydroxide ions).

As we know that KOH is a base which ionizes in water to gives OH^- ions (hydroxide ions) and K^+ ions.

Hence, potassium hydroxide is classified as an Arrhenius base because KOH contains OH^- ions.
The answer is (1)OH- ions. The base has more OH- ions while the acid has more H+ ions. And if you dissolve them into water, the pH of the solution is also different. Base has pH>7 and acid has pH<7 at room temperature.

What is the order, from simplest to most complex, for the classification of matter

Answers

B) element, molecule, compound, mixture is the answer just took the test ;) good luck : P

In a reaction progress curve, which point on the curve corresponds to an intermediate of the reaction?

Answers

Answer : The valley between the two peaks is usually referred to intermediate formation of the reaction. The two mountain peaks when formed in a reaction the stable phase between them is exactly when an intermediate is formed and often observed on the curve.

The valley between two peaks

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