Answer:
19) 3.6920 × 10⁻⁵
20) 4.059× 10²
21) 2.46810121416 × 10³
22) 1.0000× 10⁻³
Explanation:
Scientific notation is the way to express the large value in short form.
The number in scientific notation have two parts.
The digits (decimal point will place after first digit)
× 10 ( the power which put the decimal point where it should be)
For example:
0.000036920
In scientific notation = 3.6920 × 10⁻⁵
405.9
In scientific notation = 4.059× 10²
2468.10121416
In scientific notation = 2.46810121416 × 10³
0.0010000
In scientific notation = 1.0000× 10⁻³
Answer:
The bonds between atoms in the reactants are rearranged to form new compounds in chemical reactions, but none of the atoms disappear and no new ones are formed. As a consequence, chemical equations must be balanced, meaning that the number and kinds of atoms must be the same on both sides of the reaction arrow.
Explanation:
Here are my quick example slides:
1st Picture:
just a title page
2nd Picture:
I just gave the definition of an organelle you could go more in-depth. The picture doesn't have to be there, of course.
3rd Picture:
Examples of organelles in plant and animal cells, these are just examples of how I would do one.
This was just to show how you could do it because it would be kind of hard for me to explain just in words.
Hope I could help! c:
Answer:
the greenhouse effect occurs in the earths atmosphere
Answer : The concentration of SO₂Cl₂ after 720 min will be, 
Explanation :
Expression for rate law for first order kinetics is given by:

where,
k = rate constant = 
t = time passed by the sample = 720 min
a = initial amount of the reactant = 
a - x = amount left after decay process = ?
Now put all the given values in above equation, we get


Therefore, the concentration of SO₂Cl₂ after 720 min will be, 