1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
podryga [215]
3 years ago
14

What is the chemical equation for the alpha decay of erbium-144

Chemistry
1 answer:
iren [92.7K]3 years ago
8 0

Answer:

Er-144 -------> Dy-140 + He-4

Explanation:

Alpha decay is the release of a hydrogen nucleus.  So the original atom will decrease the mass by 4 and the atomic number by 2.

You might be interested in
Which of the following would dissolve in water, and why?
Oduvanchick [21]

Answer:

It should be acetic acid.

Explanation:

When you have ionic bonds, the ionic bonds will always be water soluble; the polarity doesn't matter for this case.

4 0
3 years ago
PLEASE HELP!! It’s the last day to get the assignment in!!
Blizzard [7]

Answer:

Explanation:

Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change. Or Light is given off, a permanent color change occurs, gas is given off, heat is given off, and a precipitate is formed

3 0
3 years ago
Please help. Thank you guys for all your help and support. <3
miv72 [106K]
It would be “To obey the law of conservation of mass”
7 0
3 years ago
Read 2 more answers
Stuck stupid science homework. anyone know answers?
Veronika [31]
The charge of a Rb ion would be +1
7 0
3 years ago
What is the mass, in grams, of 0.125 L of CO2 at STP? Question 4 options: 2.80 g 181 g 0.246 g 4.11 g
Zolol [24]
1) Use the fact that 1 mol of gas at STP occupies 22.4 liter

=> 1 mol / 22.4 l = x / 0.125 l => x = 0.125 l * 1 mol / 22.4 l = 0.00558 mol

2) Now use the molar mass of the gas

molar mass of CO2 ≈ 44 g / mol

Formula: molar mass = mass in grams / number of moles =>

mass in grams = molar mass * number of moles = 44 g/mol * 0.00558 moles

mass = 0.246 g

Answer: 0.246 g
7 0
3 years ago
Other questions:
  • A student dissolves 3.9g of aniline (C6H5NH2) in 200.mL of a solvent with a density of 1.05 g/mL . The student notices that the
    11·1 answer
  • When hydrochloric acid reacts with sodium sulfide, hydrogen sulfide gas and sodium chloride are produced. How many moles of H2S
    13·1 answer
  • Calculate the mole fraction of methane in the inital mixture assuming the temperature and volume remain constant
    13·1 answer
  • PLEASE HELP MEEE!!! A group of students performed an experiment in which they dropped a cube of metal into a graduated cylinder
    11·1 answer
  • What is the empirical formula of a compound that is 40% sulfur and 60% oxygen by weight?
    6·1 answer
  • What stress would shift the equilibrium position of the following system to the right?
    9·2 answers
  • What is the likely impact of water's high specific heat on life on Earth? (3 points)
    11·1 answer
  • The group number for alkali metals
    15·1 answer
  • Calculate number of g H3PO3 formed from 53.6 g H2O react with excess PCl3?
    8·1 answer
  • Can you explain how to convert 50pis to atm ?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!