An isotope contains 47 protons, 47 electrons, and 60 neutrons. What is the identity of the isotope?

Chemistry

2 answers:

erastovalidia [21]2 years ago

7 0

Answer:

To find the identity of the isotope we must first calculate the mass number

Mass number (M) = A + Z

Where

A is the atomic number

Z is the neutron number

A = 47

Z = 60

M = 60 + 47 = 107

From the options above

The answer is option A

Hope this helps you

Kazeer [188]2 years ago

7 0

ionic compound (NH4)2SO4. b. Explain why it cannot be molecular by referring to the Lewis diagrams you drew above as well as the octet rule.

You might be interested in

What tools do scientist use

Nikolay [14]

A beaker and a microscope

7 0

3 years ago

Read 2 more answers

Calculate the volume of a 3.50 M solution of H2SO4 made from 49 g of H2SO4

maxonik [38]

Answer:

0.143L

Explanation:

Molar mass of H2SO4 = 98g/Mol

No of mole = mass/molar mass

No of mole= 49/98 = 0.5 mol

No of mol = concentration × volume

Volume = n/C = 0.5/3.5 = 0.143L

3 0

2 years ago

Lt takes 4 hr 39 min for a 2.00-mg sample of radium-230 to decay to 0.25 mg. what is the half-life of radium-230?

Rufina [12.5K]

Radioactive decay => C = Co { e ^ (- kt) |

Data:

Co = 2.00 mg
C = 0.25 mg
t = 4 hr 39 min

Time conversion: 4 hr 39 min = 4.65 hr

1) Replace the data in the equation to find k

C = Co { e ^ (-kt) } => C / Co = e ^ (-kt) => -kt = ln { C / Co} => kt = ln {Co / C}

=> k = ln {Co / C} / t = ln {2.00mg / 0.25mg} / 4.65 hr = 0.44719

2) Use C / Co = 1/2 to find the hallf-life

C / Co = e ^ (-kt) => -kt = ln (C / Co)

=> -kt = ln (1/2) => kt = ln(2) => t = ln (2) / k

t = ln(2) / 0.44719 = 1.55 hr.

Answer: 1.55 hr

6 0

3 years ago

How much time would it take to distribute one avagadro's number of wheat grains if 10^10 grains are A)1.9*10^2 years B)1.9*10^10

Makovka662 [10]

Answer:

It takes 1.9 $\times 10^{6}$ years to distribute all the grains.