An element X has two isotopes. X–15 has 7 protons and 8 neutrons. Determine the atomic number and mass number of the second isotope, which has 10 neutrons in its nucleus.. How would I do this and get the answer?

Answers

Answer 1

Answer:

Answer:The atomic mass of the second isotope of an element X 17 amu with atomic number of 7 and it is represented by X-17.

Explanation:

Number of protons in isotope X-15,(p) = 7

Number of neutrons in isotope X-15,(n) = 8

Atomic mass of the isotope X-15 = (p) + (n) = 7 + 8 = 15 amu

Number of protons in second isotope of an element X,(p) = 7

Atomic number = Number of protons in an atom of an element

Number of protons in the isotopes of same element remains the same

Number of neutrons in second isotope of an element X,(n) = 10

Atomic mass of the second isotope of an element X= (p) + (n) = 7 + 10= 17 amu

The atomic mass of the second isotope of an element X 17 amu with atomic number of 7 and it is represented by X-17.

Related Questions

The lewis structure of n2h2 shows __________.a.a nitrogen-nitrogen triple bondb.a nitrogen-nitrogen single bondc.each nitrogen has one nonbinding electron paird.each nitrogen has two nonbinding electron pairse.each hydrogen has one nonbonding electron pair
Distinguish between a carbohydrate and a protein
The octet rule states that,in chemical compounds,atoms tend to have
A volume of a fixed gas is doubled and the temperature is doubled. What happens to the pressure of the gas?
A substance that speeds up the rate of a chemical reaction is calleda. a catalyst.b. a lipid.c. a molecule.d. an element.

A saturated solution of NaNO3 is prepared at 60.°C using 100. grams of water. As this solution is cooled to 10.°C, NaNO3 precipitates (settles)out of the solution. The resulting solution is saturated. Approximately how many grams of NaNO3 settled out of the original solution?
(1) 46 g (3) 85 g
(2) 61 g (4) 126 g

Answers

The answer is 46 g

The explanation :

According to the attached curve of the relation between the temperature and the grams in solutions:

-we can see from the curve that the grams of NaNO3 at 60°C = 126 g

-and the grams of NaNO3 at 10°C = 80 g

-so, To get the grams of NaNO3 settled out of the original solution, we will subtract the grams of NaNO3 at 10°C - the grams of NaNO3 at 60°C

126 g - 80 g = 46 g

∴ the correct answer is 46 g

The answer is (1) 46g. This is related to the solubility curve of the NaNO3. The solubility of NaNO3 under 60 ℃ is 126 g. And the solubility under 10 ℃ is 80 g. So the NaNO3 precipitates is 126-80=46 g.

Calculate the molecular weight of a dibasic acid.0.56gm of which is required 250ml of N/20 sodium hydroxide solution for neutralization.

Answers

Answer: The molecular weight of the dibasic acid is 89.6 g/mol

Explanation:

Normality is defined as the amount of solute expressed in the number of gram equivalents present per liter of solution. The units of normality are eq/L. The formula used to calculate normality:

$\text{Normality}=\frac{\text{Given mass of solute}* 1000}{\text{Equivalent mass of solute}* \text{Volume of solution (mL)}}$ ....(1)

We are given:

Normality of solution = $(1)/(20)=0.05N$

Given mass of solute = 0.56 g

Volume of solution = 250 mL

Putting values in equation 1, we get:

$0.05=\frac{0.56* 1000}{\text{Equivalent mass of solute}* 250}\n\n\text{Equivalent mass of solute}=(0.56* 1000)/(0.05* 250)=44.8g/eq$

Equivalent weight of an acid is calculated by using the equation:

$\text{Equivalent weight}=\frac{\text{Molar mass}}{\text{Basicity}}$ .....(2)

Equivalent weight of acid = 44.8 g/eq

Basicity of an acid = 2 eq/mol

Putting values in equation 2, we get:

$44.8g/eq=\frac{\text{Molar mass}}{2eq/mol}\n\n\text{Molar mass}=(44.8g/eq* 2eq/mol)=89.6g/mol$

Hence, the molecular weight of the dibasic acid is 89.6 g/mol

The ________ is the balance of the amount of carbon in each reservoir.a. global nitrogen budget
b. global carbon budget
c. global oxygen budget
d. global respiration budget

Answers

Answer: Global carbon budget.

Explanation: The global carbon budget can be defined as the budget that balances the fluxes of carbon between the four reservoirs. These four reservoir of carbon are Earth's terrestrial biosphere, hydrosphere, atmosphere and geosphere.

The total amount of carbon on the earth should be maintained so there is a global carbon budget that maintains the amount of carbon on earth.

the answer is b. global carbon budget

What is the type of bond holding hydrogen and oxygen atoms together in a single h2o molecule? What is the type of bond holding hydrogen and oxygen atoms together in a single h2o molecule? Ionic bond covalent bond hydrogen bond?

Answers

it is a hydrogen bond

Answer:

It is a hydrogen bond.

the molar mass off O2 is 32.0 g/mol. what mass in tye grams of 02 is Required to react completely with 4.00 mol mg

Answers

The balanced reaction is:

2Mg + O2 = 2MgO

We are given the amount of magnesium to be reacted with O2. This will be the starting point of the calculations.

4.00 g C3H8 ( 1 mol Mg/ 24.31 g Mg ) ( 1 mol O2 / 2 mol Mg ) ( 32.0 g O2 / 1 mol O2 ) = 2.63 g O2

Answer:

64.0 grams!

Explanation:

Use the mole ratios

Central American countries are important agricultural producers. Each year, the United States imports about five billion dollars’ worth of __________.a. bananas
b. cacao
c. mangoes
d. coffee

Answers

a. bananas

Central American countries are important agricultural producers. Each year, the United States imports about five billion dollars’ worth of bananas.

NOT:

b. cacao
c. mangoes
d. coffee

correct answer is D COFFEE

Other Questions

Which organism lived on Earth during the Paleozoic era? A. trilobite B. dinosaur C. pine tree D. octopus

What is the #1 or main component of the earths ancient atmosphere?

1. Gas Formula Helium He Methane CHA Oxygen 0₂ Nitrogen N₂ Chlorine Cl₂ Relative atomic or molecular mass 4 ,16, 32 ,28 ,71 Look at the table and answer the following questions. (a) Which two gases will mix fastest? (b) Which gas will take least time to escape from gas syringe? (c) Which gas will diffuse slowest and why? Or (c) An unknown gas diffuses faster than 0₂ and slower than N₂, what can you about its molecular mass?

Which statement best explains why different gases effuse at different rates?At a given pressure, gas particles with smaller masses move faster. At a given pressure, gas particles with smaller masses move slower. At a given temperature, gas particles with smaller masses move faster. At a given temperature, gas particles with smaller masses move slower