First we need to define some things:
m means meters
mm means millimeters
cm means centimeters
1 m = 100 cm
1 mm = 0.1 cm
They are asking for us to convert 23.6 cm to m and mm
Lets start with 23.6 cm to m:
(the cm's cancel each other out)
Convert 23.6 cm to mm:
(again the cm's cancel out)
Hope this helps!
Answer:
5.19 x 10²³ molecules of H₂O
Explanation:
1 mole => 6.023 x 10²³ molecules of H₂O
0.861 mole => 0.861mole x 6.023 x 10²³ molecules of H₂O
= 5.19 x 10²³ molecules of H₂O
Start by assigning the most complicated species a coefficient of one. That species should contain the greatest number of elements, e.g. .
<em>(not balanced)</em>
Assign coefficients to the rest of the species based on the conservation of atoms. For instance, the left hand side of the equation now contains one atom of hydrogen H and one atoms of chlorine Cl. The left hand side shall have an identical configuration. Both zinc chloride and hydrogen should therefore have a coefficient of 1/2. (Don't panic about the fractions. They are to be eliminated in a few more steps.)
<em>(not balanced)</em>
The coefficient 1/2 in front of zinc chloride indicates the presence of 1/2 zinc atom in the right hand side of the equation. Zinc on the left hand side of the equation should accordingly have a coefficient of 1/2.
Increasing coefficients on both sides of the equation by a factor of two to eliminate all fractions. Hence the balanced equation.
(balanced)
The same set of operations should work for the second equation.
(balanced)
Note that the third equation does not accurately represent the catalytic decomposition of hydrogen peroxide . The balanced equation should be:
(balanced)
Baking soda is a reactant which means it makes the cookie bigger. So when using a lot of baking soda the cookie will be big
Answer:
If I remember correctly it should be B because it went from Cu^2 to Cu^0
Explanation: