# A large atom decays and emits a particle. After the reaction is complete, the atom’s mass has changed substantially. What kind of particle has most likely been emitted? a)alpha particle b)beta particle c)positron d)photon

2 months ago

Guest #8116
2 months ago

## Solution 2

Guest #8117
2 months ago
The correct answer is A) Alpha particle

## 📚 Related Questions

Question
ASAP HELP GIVING TO CORRECT PERSON A BRAINLIEST REWARD Cellulose is a polymer that makes up plant cell walls. Cellulose is made from a chain of C6H10O5 molecules. Which monomers are most likely used to produce cellulose? a)nucleotides and amino acids b)glucose molecules c)nucleotides d)amino acids
Solution 1
It's B: glucose molecules
Solution 2

Explanation:

Question
Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O? How many hydrogen molecules (H2) are involved in this reaction?
Solution 1
1. If 3 molecules of iron react, then 4 molecules of H2 should be produced (coefficients).

2. If 3 molecules of iron react, then 4 molecules of water are needed (coefficients).

3. The mole ratio of iron to water is 3:4 (coefficients).

4. If 3 molecules of iron react, then 4 molecules of H2 are produced, and therefore are involved in the reaction (coefficients).
Question
Fill in the missing blank 2C4H6 + _______ → 8CO2 + 6H2O
Solution 1
the  missing blank is filled by 11 O2
that is
= 2C4H6 + 11O2 = 8 CO2 + 6H2O

C4H6 reacted with oxygen (O2 )through the process of combustion to form carbon iv oxide (CO2)  and water (H2O) . 11 infront  of  O2 is to make sure the molecules of O2 is balanced in both reactant side and the  product side
Question
Carl crumbled a piece of paper before throwing it in the trash can. Which is true about the paper after it has been crumbled
Solution 1
Answer is C: It's appearance changed.
Question
Which pure substance will have the intermolecular force oh hydrogen bonding with itself
Solution 1
Molecules are characterized by inter and intra molecular forces of interaction. intramolecular forces are those forces that are present within the molecular framework. Ionic and covalent are typical examples of intra-molecular forces of interaction which held atoms together and assist in formation of molecules. On other hand, intermolecular forces of interaction, occurs between two different molecules. They are further sub-categories as dipole-dipole, dipole-induced dipole, van der Waal's, hydrogen bonding etc.

In current context, hydrogen bonding exist if hydrogen atom in a molecule is attached to electronegative elements like O, F or N. Classic example of the system exhibiting hydrogen bonding is pure water. In pure water, water molecules are held together by hydrogen bonding.
Question
Unlike other types of lipids, phospholipids contain
Solution 1

Phosphate group.

Explanation:

One of the form of lipids is triglycerides.

Triglycerides are the lipids which have one glycerol molecule bonded with three fatty acid chains, so it is a triester of glycerol hence known as triglycerides.

In case of phospholipids also there is a glycerol molecule to which two fatty acids are bonded and in place of third fatty acid it has a phosphate group which makes it different from other lipids or triglycerides.

Solution 2
Phosphate Groups

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That was for the character limit thing!
Question
A supervisor spends a day inspecting a nuclear plant for potential radiation leaks. She has to move throughout the plant inspecting all the equipment and machinery. She needs to take two different radiation detection devices to help ensure her safety and to find radiation leaks. She needs the results immediately. Which two devices would be the best choices for the task? Geiger counter and scintillation counter Geiger counter and cloud chamber cloud chamber and scintillation counter film badge and scintillation counter
Solution 1

Geiger counter and scintillation counter

Explanation:

The Geiger counter was invented by Hans Geiger in 1908 to measure the levels of radiation in bodies and the environment, so it is one of the indispensable equipment for the inspector to detect radiation leaks in a nuclear power plant. It contains a tube with argon, which ionizes by being crossed by alpha and beta particles of radiation, closing the electric circuit and triggering the counter.

Similarly, a scintillation detector is an apparatus used to detect ionizing radiation. When something in the environment has been reached by radiation, this detector emits a small ray of light, indicating the radiation contamination.

Solution 2

A. Geiger counter and scintillation counter

Explanation:

Question
What is measured by the reaction rate? the speed at which products form the time required for a reaction to go to completion the probability that a reaction will occur
Solution 1

Explanation:

Rate of reaction is defined as the rate at which a chemical reaction occurs. That is, it tells how rapidly or slowly the products are formed.

Mathematically,         Rate =

It also tells the number of successful collisions taking place.

Thus, we can conclude that the speed at which products form is measured by the reaction rate.

Solution 2
The reaction rate is the speed at which products form, based on the rate of the slowest step in the mechanism.
Question
Na has an atomic mass of 23.0g and O has an atomic mass of 16.0g. How many grams of Na are needed to completely react with 40.0g of O2?
Solution 1
The grams of Na that are needed to complete  to react with 40..0 g of O2 is calculated as  below

find the moles of O2 used = mass/molar mass

= 40 g/32g/mol = 1.25  moles

write the reacting equation
4Na+ O2 = 2Na2O

by use of mole ratio between Na to O2 which is 4 :1

the moles of Na = 1.25 x 4 = 5 moles

mass of Na = mass x molar mass

=  5 moles x 23 g /mol= 115  moles
Question
Define solubility (in science)
Solution 1
Solubility is the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent.

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