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
kompoz [17]
3 years ago
11

In one form of beta decay potassium decays to produce calcium. What values do the letters represent

Chemistry
2 answers:
LenKa [72]3 years ago
7 0

Answer:

A. 19

B. 40

C. - 1

Explanation: Please see attachment for explanation

frosja888 [35]3 years ago
6 0

Answer:

the second question is Beta Minus

Explanation:

You might be interested in
SnO2 + 2 H2 ——> Sn + 2 H2O
SpyIntel [72]

Answer:

0.15g

Explanation:

Given parameters:

Number of molecules of water = 1.2 x 10²¹ molecules

Unknown:

Mass of SnO₂  = ?

Solution:

To solve this problem, we have to work from the known to the unknown specie;

             SnO₂   +    2H₂    →   Sn  +   2H₂O

Ensure that the equation given is balanced;

       

Now,

          the known species is water;

                  6.02 x 10²³ molecules of water  = 1 mole

                   1.2 x 10²¹ molecules of water  = \frac{1.2 x 10^{21} }{6.02 x 10^{23} }    = 0.2 x 10⁻²moles

Number of moles of water  = 0.002moles

           From the balanced chemical equation:

         

             2 mole of water is produced from 1 mole of    SnO₂  

           0.002 moles of water will be produced from \frac{0.002}{2}  = 0.001moles

To find the mass;

           Mass  = number of moles x molar mass

Molar mass of  SnO₂ = 118.7 + 2(16) = 150.7g/mol

        Mass  =  0.001 x 150.7 = 0.15g

3 0
3 years ago
What is a wave produced by vibrating electric charges that can travel in matter and empty space?
Harman [31]
The answer is A

Explanation:
8 0
3 years ago
Read 2 more answers
describe how to put a food you enjoy such as hamburger pizza or muffin identify one physical change that takes place as this foo
Debora [2.8K]
One chemical change would be baking the muffin.
One physical change would be chopping the fruits to add to the mixture
7 0
3 years ago
What is a mixture called when it has its different components mixed evenly within the substance? Heterogeneous mixture Homogeneo
larisa86 [58]
It would be considered a Homogeneous Mixture. A mixture with two or more components mixed evenly is a Homogeneous mixture.

3 0
3 years ago
Read 2 more answers
Prepare a list of objects around you that are electroplated​
DedPeter [7]

Answer:

Hello! Some household items that are electroplated include kitchenware, such as metal pots and pans, door handles, mobile phones, and coins. An electroplated object is coated by electrolytic deposition with chromium, silver, or another metal.

8 0
2 years ago
Other questions:
  • In a chemical reaction that takes place at a fixed pressure and volume, the enthalpy change (ΔH) is –585 kJ/mol. Will this react
    7·2 answers
  • A student dips a strip of metal into a liquid. Which is evidence that only a physical change has occurred? The metal bends more
    7·2 answers
  • The reaction of aluminum with bromine is shown here. The equation for the reaction is
    15·1 answer
  • The Bohr model of an atom shows a nucleus with electrons circling around it. What does the Bohr model show that makes it a usefu
    11·1 answer
  • How many mm are equal to 21 L. How many mg are equal to 9 g. How many grams are equal to 400 kg
    9·1 answer
  • Calculate the formula mass for Cr(C2H302) show work
    5·2 answers
  • Please help me with chemistry
    11·1 answer
  • A container with a volume of 893L contains how may moles of air at STP?
    11·1 answer
  • Choose the formula for hydroxide.<br> OH<br> HPO4<br> Ca(OH)2<br> d Ba(OH)2
    6·2 answers
  • The chemical properties of an atom are determined by while bonding is determined by the .
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!