Answer:
It cost Evan $17.70 to send 177 text messages. How many text messages did he send if he spent $19.10?
Explanation:
I cant do this
Answer:
1027.62 g
Explanation:
For
:-
Mass of
= 296.1 g
Molar mass of
= 27.66 g/mol
The formula for the calculation of moles is shown below:
Thus,

From the balanced reaction:-

1 mole of
react with 3 moles of oxygen
Thus,
10.705 mole of
react with 3*10.705 moles of oxygen
Moles of oxygen = 32.115 moles
Molar mass of oxygen gas = 31.998 g/mol
<u>Mass = Moles * Molar mass = 32.115 * 31.998 g = 1027.62 g</u>
It all depends what theory it is most are supported by really good evidence but they just don't have all the evidence so it can't be proven a fact at that time
The answer is Na-F. The F has highest electronegativity among these elements. So we need to find the element with smallest electronegativity. And this element is Na.