Question

How many grams of Ca are needed to react completely with 2.20 L of a 4.50 M HCl solution?

Ca + 2HCl yields CaCl2 + H2

5.00 g
9.90 g
198 g
361 g

Answer 1

@Abmon98

Answer 2

Number of Moles=Concentration*Volume
Number of Moles of Ca(s)=2.20*4.50=9.9 moles
Mole Ratio of Ca(s) to HCl
1 mole of Ca:2 mole of HCl
x mole of Ca :9.9 mole of HCl x=9.9*1/2=4.95 moles of Ca
Number of moles=Mass(g)/Molar Mass(g/mol)
Mass(g)=Molar Mass(g/mol)*Number of Moles
Mass(g)=40.1*4.95=198.495 grams

Answer 3

WOW тн@ηк ⑂øü‼

Answer 4

Your most welcome :D :)

Answer 5

u did the whole working again <.< @Abmon98

Answer 6

@somy Lol i forgot :P

Answer 7

@Abmon98 i'll forget you next time i catch you >_<
u r smarty pants so use your knowledge wisely - helping other's actually learn :3 believe me - if you see someone you taught couple of days or whatever ago, doing the question on their own or helping someone else with the thing U taught
u will feel happy :)

Answer 8

@somy hahaha you are the smarty one
i thought by writing out steps and the answer directly is a way of teaching others a method to solve their question and could help them in learning but looks like its not :/