CHEMISTRY HIGH SCHOOL

The particle that is identical to a high energy electron is known as a(n) _____. alpha particle, beta particle, gamma ray

Answers

Answer 1
Answer: The particle that is identical to a high energy electron is known as a beta particle.
Answer 2
Answer: Beta particle is the answer. It has the same numbers of protons but not neutrons. 

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Suppose you wanted to dissolve 109 g of sodium carbonate in enough water to make 6.00 L of solution. What is the molarity of this solution?
Electrical motors work based on the fact that a wire carrying current can produce a ______________ field, which can lead to production of mechanical energy through rotation. A gravitational B parallel C magnetic D alternating
A solution contains 0.400 g of naoh in 20.0 ml of solution. what is its molarity?
NEED HELP! Assume that the variables x and y are directly related. If k = 8, what is the value for each of the following points? Be sure and record your data to be used in the following problem. x y k 0.5_________8 1___________8 2___________8 3___________8

The lone pair of electrons in ammonia allows the molecule to: A.assume a planar structure. B.act as an oxidizing agent. C.act as a Lewis acid in water. D.act as a Lewis base in water.

Answers

Answer:

The correct option is: D.act as a Lewis base in water.

Explanation:    

Ammonia is a hydride of nitrogen with the chemical formula NH₃. It is a colorless gas with a characteristic pungent smell. According to the VSEPR theory, it has a trigonal pyramidal structure.  

In water, ammonia acts as a Lewis base due to the presence of lone pair on the nitrogen atom. Lewis bases are electron pair or lone pair donors.      

If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?

Answers

Okay so according to the formula PV=nRT
n=4
P=5.6 atm
V=12 L
R=0.08206 L atm mol-1 K-1
T=?
So, if you plug it in, you will get:-

T=PV/nR
T=(5.6 atm)(12 L)/(4 mol)(0.08206 L atm mol-1 K-1)
T=204.73 K

Hope I'm right! :)

Answer:

PV=nRT

Explanation:

T=PV/nR

P=5.6atm n= 4 mol V=12 L R =.082Latm/K mol

T= (5.6 atm)(12 L)/(4 mol)(.082Latm/K mol)

T = 205 K = -68 C

How can we determine the atomic mass of an element which posseses isotopic forms?​

Answers

Answer: Here are the steps to determine the atomic mass of an element with isotopic forms:

1. Identify the isotopes: Determine the different isotopic forms of the element. Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons.

2. Determine the relative abundance: Find the relative abundance of each isotope. This information is typically given as a percentage or decimal. The relative abundance represents the proportion or percentage of each isotope in a naturally occurring sample of the element.

3. Obtain the mass of each isotope: Identify the mass of each isotope. This is usually given in atomic mass units (u) or grams per mole (g/mol).

4. Multiply the mass of each isotope by its relative abundance: Multiply the mass of each isotope by its relative abundance (expressed as a decimal). This calculates the contribution of each isotope to the overall atomic mass.

5. Sum the contributions: Add up the contributions of each isotope to obtain the atomic mass. This sum represents the weighted average of the masses of all the isotopic forms, taking into account their relative abundance.

5.This ancient element symbol
means ...
A. copper
B. silver
c. gold
D. tin

Answers

Answer:

A im pretty sure

Explanation:

The three components essential for a fire are:a. Oxygen, fuel, ignition source.
b. Oxygen, fuel, primer.
c. Oxygen, fuel, oxygen enriched environment.
d. Oxygen, fuel, a liquid.

Answers

Hey there


The answer should be : Oxygen, fuel , heat


I hope that's help !

Suppose you have two cubes of exactly the same volume. You weigh them and find a mass of 8.91g for one and 8.88g for the other cube even though they are made of the same material. How is this possible? ANSWER FAST

Answers

Explanation:

Mass of the cube -1 = 8.91 g

Mass of  the cube-2 = 8.88 g

Volume of the cube-1 = Volume of cube-2 = V

Density of the cube-1 = D

Density of cube-2 = D'

Density=(Mass)/(Volume)

D=(8.91 g)/(V)

D'=(8.88 g)/(V)

(D)/(D')=((8.91 g)/(V))/((8.88 g)/(V))=1.0033

D=1.0033* D'

Density directly depends upon mass of the substance and inversely depends upon volume of the substance.

Here volume of the both cubes are same but masses are different. So, in this case densities of both cubes can be compared on the basis of masses.

This difference in densities of same material can be due following possibles:

1. May be an impurity present in the one of the cubes for which they have given different values their mass.

2. Weighing may not be working well.

3. May be an air trapped inside in one of the cubes.
The two substances have different densities. Density can be affected by the temperature of a substance. Since they have to same volume but weigh differently, they have different densities. Remember, density = mass/volume
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