Question

pls help me it is so urgent​

Answer 1

Answer:

Since 1 mole co2 has 2 moles of O atom 2 moles ie 88 gm will have 4 moles which is 4 times avogardos no of atom ie 4* 6.023 *10^23.THIS IS THE ANSWER...... PLEASE MARK ME AS BRAINLIEST!!!!!;;

Answer 2

Answer:

1. Electrons=92

Protons=92

Neutrons= 235-92=143

4. Power= work/time

P= (20×6)/ 60 = 2 watt

5. Density= Mass/ Volume

= 4000g/500 cc

= 8 g/cc

6. 72×5/18 = 20 m/s

v=u+at

20= 0+a5

a5= 20

a= 20/5

a= 4 m/s^2

7. 800/1000 = 0.8 kg

Force= mass× acceleration

=( 0.8 ×1.5 ) N

F = 1.2 N

I solved all those which I could