Answer:
Explanation:
Solution required is .15 M 500 mL sodium fluoride .
molecular weight of sodium fluoride = 42
one mole of sodium fluoride = 42 grams
No of moles contained in the solution of .15M , 500 mL solution
= .15 x 0.5 moles = .075 moles
1 mole = 42 g
.075 moles = .075 x 42 = 3.15 grams .
So mass of sodium fluoride required = 3.15 g .
Name the following parts:
A—-
B——
C——
Over the past week, Anna has been very curt with shondra, and when she ask if she has done something to offend her, Anna tersely replies, "no, everything is fine" what should shondra do
Answer:
A. avoid talking to Anna altogether and stay out of her way
B. ask her manager for advice
C. check with Gary to see if there is any gossip about what's going on with Anna
D. take a curt approach of her own to show Anna how it feels
Explanation:
ANSWER: B.
List and describe all five types of chemical reactions. thx.
Answer:
combination, decomposition, single-replacement, double-replacement, and combustion.
Explanation:
Define the terms heredity and inherited in your own words.
Answer:
Heredity is when you have gotten either physical or mental traits from your parents.
Inherited in Biology: Getting traits from your parents
Inherited outside Biology: is the practice of passing on private property, titles, debts, privileges, rights, and obligations upon the death of an individual.
Explanation: