A. cesium. bacause as the elements go down a group of the atoms, the sizes of the atom will increase . we know that tge tendency to lose an electron is based on the sizes of the atoms of group 1.
Answer:
C) 11 g
Explanation:
first look to graph , you have x and y
x is mass of Fe
and y is mass of product
if the reaction consumes 2 g of Fe , ( look to x axis , look to 2 )
and go up until the black line touch the line of number 2
and go left and you will see the point become in the middle between 10 and 12
** 12 (11) 10 ***
Good Luck
Answer:
It is required 0.3 molecules of O2 to produce 0.6 molecules of H2O
Explanation:
The water´s formation reaction is: 2H2 + O2 --> 2H2O
This reaction shows the molecular O2:H2O ratio: 1:2.
Then, if we want to know how many molecules of O2 are required to produce 0.6 of H20, it is necessary calculate as it showed next:
0.6 molecules H2O * (1 molecula O2 / 2 molecules H2O)= 0.3 molecule O2
Answer:
191 packages of pepperoni
Explanation:
Each pizza would have 13 slices and 15 pieces of pepperoni on each one.
(because same amount of pepperoni and olives)
13 × 15 so each pizza has 195 pieces of pepperoni
138 (number of pizzas) × 195 (pieces of pepperoni)
26910 (pieces of pepperoni) / 141 (amount in each package)
= 190.85
so 191 packages
The most common type of fluoride found in toothpaste is part of the compound sodium fluoride which has the chemical formula NaF
