Balance the following chemical reaction:
Na3P + CaF2 --> NaF +
+
Ca3P2

Let a, b, c, d be constants such that

a Na₃P + b CaF₂   →   c NaF + d Ca₃P₂

Count the atoms on either side.

Left:

Na = 3a, P = a, Ca = b, F = 2b

Right:

Na = c, F = c, Ca = 3d, P = 2d

To get the same number of atoms of each element on both sides, we would have

3a = c

a = 2d

b = 3d

2b = c

If we let d = 1, we get a = 2, b = 3, and c = 6, so the balanced equation is

2 Na₃P + 3 CaF₂   →   6 NaF + Ca₃P₂

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

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