All categories

3 years ago

PLEASE HELP ME!!! I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS CORRECTLY FIRST!!! 20 points!!!

Chemistry

2 answers:

loris [4]3 years ago

8 0

The atomic number for Uranium is 92
The mass of Krypton is 92
There are 85 Barium neutrons
I think this reaction emits 3 neutrons? I'm not familiar with seeing neutrons being emitted in an equation, so don't take my word for that last one.

stepan [7]3 years ago

4 0

<span>The atomic mass for Krypton is . (92,56,128,36)</span>

You might be interested in

Identify unit of measure would be most appropriate to measure the distance between two planets in our solar system

Damm [24]

The astronomical unit or also know as AU. Scientists use this because it’s convenient and easier to understand! Hope this helps ;)

3 0

3 years ago

Please help due right now <br> 10 POINTS

Darya [45]

Answer:

F=ma

Explanation:

F=m×a

according to that F÷m=a and also F ÷a=m

3 0

3 years ago

DerKrebs [107]

Answer:

F = 30 N

Explanation:

Given data:

Mass of toy train = 1.5 kg

Acceleration of train = 20 m/s²

Amount of force acting on it = ?

Solution:

The net force on object is equal to the its mass multiply by its acceleration.

Formula:

F = ma

F = force

m = mass

a = acceleration

Now we will put the values in formula.

F = 1.5 kg × 20ms⁻²

F = 30 kg.ms⁻²

kg.ms⁻² = N

F = 30 N

7 0

3 years ago

What can be produced from chemical energy? matter heat sunlight pollution

Ivenika [448]

Answer:

pollution

Explanation:

8 0

2 years ago

URGENT!!-- Please help!

blondinia [14]

Moles of gas = 0.369

<h3>Further explanation</h3>

Given

P = 2 atm

V = 5.3 L

T = 350 L

Required

moles of gas

Solution

Ideal gas Law

$\tt n=\dfrac{PV}{RT}\\\\n=\dfrac{2\times 5.3}{0.082\times 350}\\\\n=0.369$

Avogadro's law : at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles

moles of O₂ = 45% x 0.369 = 0.166

moles of Ar = 12% x 0.369 = 0.044

moles of N = 43% x 0.369 = 0.159

3 0

2 years ago