In question 2, the masses of the following reactants and products were known: 6
tin: 118.7g
tin (IV) nitrate: 366.7g
silver nitrate: 679.6g
a) What mass of silver metal would you expect to be produced? [1 mark]
b) How can you predict this mass (explain).
c) When the silver was filtered from the solution, dried, and weighed, the mass was
actually found to be 420g. Explain why there might be this difference between the
expected and actual values.

NEED HELP ASAP

Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.