Which statement is true about the magnet and nails?

a) both the magnet and the nails are permanent magnets.
b) both the magnet and the nails are temporary magnets.
c) the magnets are temporary.
d) the magnets are permanent.

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

Will mark as brainliest ! how many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (ii) nitrate solution react with excess aluminum metal? show all work needed to solve this problem!

Give one example of a pure (exact) number and of an estimated (measured) number.