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
d1i1m1o1n [39]
3 years ago
9

Please help a girl out

Chemistry
2 answers:
NISA [10]3 years ago
7 0
I think it’ll be option B.
frosja888 [35]3 years ago
4 0
B I think it is just logic I guess
You might be interested in
What example show the transformation for electrical change to radiant?
zlopas [31]
When you plug in an electrical heater, it turns the electrical energy into radiant energy.<span />
3 0
3 years ago
The number of protons plus neutrons in the atom is called its?
yKpoI14uk [10]
This is the thing called the mass number of the thing
5 0
3 years ago
Read 2 more answers
The first step in using time more efficiently is
REY [17]
The answer is studying how people use time.

Hope this helps!
4 0
3 years ago
Read 2 more answers
The naturally occurring radioactive decay series that begins with 23592U stops with formation of the stable 20782Pb nucleus. The
dsp73

Answer: There are 7 alpha-particle emissions and 4 beta-particle emissions involved in this series

Explanation:

Alpha Decay: In this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. The mass number is reduced by 4 units and atomic number is reduced by 2 units.

Beta Decay : It is a type of decay process, in which a proton gets converted to neutron and an electron. This is also known as -decay. In this the mass number remains same but the atomic number is increased by 1.

In radioactive decay the sum of atomic number or mass number of reactants must be equal to the sum of atomic number or mass number of products .

_{92}^{235}\textrm{U}\rightarrow _{82}^{207}\textrm{Pb}+X_2^4\alpha+Y_{-1}^0e

Thus for mass number : 235 = 207+4X

4X= 28

X = 7

Thus for atomic number : 92 = 82+2X-Y

2X- Y = 10

2(7) - Y= 10

14-10 = Y

Y= 4

_{92}^{235}\textrm{U}\rightarrow _{82}^{207}\textrm{Pb}+7_2^4\alpha+4_{-1}^0e

Thus there are 7 alpha-particle emissions and 4 beta-particle emissions involved in this series

3 0
3 years ago
Combustion of 6.90g of this compound produced 13.8g of CO2 and 5.64g of H2O. What is the empirical formula of the unknown compou
Alla [95]
The empirical formula for the unknown compound would be: C2H4O (2 molecules of Carbon, 4 molecules of Hydrogen, and 1 molecule of Oxygen)
4 0
3 years ago
Other questions:
  • Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt
    7·1 answer
  • 15. Ammonium nitrate, NH4NO3, and aluminum powder react explosively producing nitrogen gas, water vapor and aluminum oxide. Writ
    5·1 answer
  • What SI unit is used to measure the number of representative particles in a substance?
    12·1 answer
  • A certain chemical reaction releases of heat for each gram of reactant consumed. How can you calculate what mass of reactant wil
    9·1 answer
  • 5. Which number is a possible pH for a solution that contains more hydronium
    7·1 answer
  • ANSWER ASAP please I need help thank you I’ll give you brainly
    12·1 answer
  • A nuclear chemist measures the mass defect of nickel-56 and finds it to be 0.4667 amu. Based on this number, (a) calculate the n
    12·1 answer
  • Hey whts up yall wnt to talk?
    11·2 answers
  • Kingdom:
    15·1 answer
  • The table shows the concentration of a reactant in the reaction mixture over a period of time.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!