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Nitella [24]
3 years ago
6

Please Help I will reward brainliest

Chemistry
2 answers:
8_murik_8 [283]3 years ago
7 0
I think it is "Known".

Radioactive decay is measured using a formula where the half-life <span>of an isotope is the time it takes for the original nuclei to decay half of its original amount.</span>
Alina [70]3 years ago
3 0
Base in what I found online it would be unpredictable . Hope that helps!
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Taya2010 [7]
Answer B hope this helps
5 0
3 years ago
Why is vapor pressure higher in oil than water if water has stronger IMF’s?
Aleksandr-060686 [28]

Answer:

A liquid's vapor pressure is directly related to the intermolecular forces present between its molecules. The stronger these forces, the lower the rate of evaporation and the lower the vapor pressure.

Explanation:

4 0
3 years ago
Read 2 more answers
The balanced net ionic equation for the neutralization reaction involving equal molar amounts of hno3 and koh is ________.
frosja888 [35]
 The  net ionic  equation for  the neutralization  reaction involving  equal molar amount amount of  HNo3  and KoH  is 

H^+   +  OH^-  =  H2O (l)

    explanation
write  the   chemical equation
HNO3 (aq) + KOH(aq) =  KNO3(aq) +H2O  (l)

ionic   eequation

H^+(aq)  +  NO3^- (aq) +  K^+9aq)   OH^-(aq) = K^+ (aq) + NO3^-(aq)  + H2O(l)


cancel the  spectator  ions( ions which  does  not  take  place in  equation ) for this case    is  NO3^-  and  No3^-

thus the  net ionic  is


H^+(aq)  + OH^- (aq)  =  H2O(l)
8 0
3 years ago
Read 2 more answers
Can someone help me, please?
stellarik [79]
19. The individual can expect to have nausea and hair loss.

20. I BELIEVE the answer is D, but you should wait for a second answer for that one.
6 0
3 years ago
When iron metal reacts with sulfuric acid, it produces iron (III) sulfate and hydrogen gas. Balance the equation: Fe + H2SO4 → F
gavmur [86]
<h3>Answer:</h3>
  1. Balanced Equation; 2Fe + 3H₂SO₄ → Fe₂(SO₄)₃ + 3H₂
  2. Why balance?: To obey the law of conservation of mass
  3. Subscripts can not be changed, since they show the actual number of atoms of each element in a compound.
<h3>Explanation:</h3>
  • The balanced equation for the reaction between the iron metal and sulfuric acid to produces iron (III) sulfate and hydrogen gas is given by;

2Fe + 3H₂SO₄ → Fe₂(SO₄)₃ + 3H₂

  • Balancing chemical equations ensures that they obey the law of conservation of mass which requires the mass of reactants and the mass of products to be equal.
  • Balancing is done by putting coefficients on reactants and products while not affecting the subscripts as subscripts show the actual number of atoms of an element in a compound.
6 0
3 years ago
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