Which of the following statements about protons are true?

select all that apply

1 protons have the same magnitude of charge as electrons but are opposite in sign.
2most atoms have more protons than electrons.
3 protons have twice the mass of neutrons.
4protons have a charge of 1+.

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?