Balance and identify the chemcial reaction numbered 3 1)
Na3PO4 +
KOH →
NaOH +
КРО,
2)
MgF2 +
__ LizCO3 →
MgCO3 +
LiF
3)
P& +
O₂ → _ P₂O₃
4)
RbNO3 +
BeF2 →
Be(NO3)2 +
RbF
5)
AgNO3 +
Cu → _Cu(NO3)2 +
Ag

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

What are several ways to reduce the effect of friction