The mass of an average grain of table salt in a sample is about 3 x 10^-4 , and the mass of an average grain of rock salt in a sample is about 1.2 x 10^-2 Part A: Convert both masses to standard notation.

Part B: the mass of an average grain of rock salt is about 40 times the mass of an average grain of table salt. If you multiply the mass of table salt in standard notation by 40, what value do you get?

Part C: Is the value you got in part B equal to the mass of an average grain of rock salt? what does this mean?

a. standard notation means in the number written in only number digits.

- to convert these multiply the two numbers given. FYI these are given in scientific notation, which is used so that numbers are easier to write.

remember: if the exponent is negative, you have move the decimal to the right. whereas, if the exponent is positive, you have to move the decimal to the left.

3 X 10^-4 --> move 4 places to the right.

answer - table salt: 0.0003

1.2 X 10^-2 --> move 2 places to the right.

answer - rock salt: 0.012

b. we know the standard notation of table salt is 0.003, so we simply multiply 40 by this.

answer - 0.0003 X 40 = 0.012

c. 0.012 = 0.012 (yes)

answer - yes the value i got in part B is equal to the mass of an average grain of rock salt. this shows that the mass of an average table salt is 1/40 times smaller than the mass of an average grain of rock salt.

- i am not sure about the "what does this mean" part. you can put whatever there but i put what i think it could be. i think it would be based on what notes you took on class.

125 yards

step-by-step explanation:

i take 75 plus 50.

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58