3) In the combustion reaction of methane gas: CH4 (8) + O2(g) CO2 (g) + 2 H2O (8) 4.0 X 10 exp 23 molecules of CH4 was used. Determine (a) the moles of CO2 produced (b) using your answer in (a), calculate the volume of CO2 produced at STP (c) the volume of oxygen used in the reaction at STP​

it is called acid bonding

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.