Answer:
False
Explanation:
If the row echelon form of the augmented matrix for a linear system has a row of zeros, then the there must not have infinitely many solution,
we can prove this with an example. Suppose we have an augmented matrix A for linear system with a row of zeros,
1 0 0 1
A= 0 1 0 -2
0 0 1 - 1
0 0 0 0
we get
x1=1
x2=-2
x3=-1
so, system has an unique solution.
we can take inference that the given statement is wrong
Answer: C. A Chemical Change
Explanation:
A chemical change is one that occurs when new substances are produced preceding a chemical reaction ( the mixing or combination of one substance with another).
From the experiment by Jasmine, since light was produced from the mixture, energy is being released which is due to a chemical change.
Silicone is most similar to carbon.
hope this helps; and good luck.
Answer:
1.89 nol Cu(NO3)2
Explanation:
if you calculate it it will be 1.89
Answer: 0.156 mol
Explanation:
To find the moles of 17.2 g K₂S, we need to know the molar mass to convert.
