Question

A student attempted to identify an unknown compound by the method used in the experiment. She found that when she heated the sample weighing 0.4862g, the mass barely changed, dropping to 0.4855g. When the product was converted to a chloride, the mass went up to 0.5247g. Is the sample a carbonate? What are the two compounds that might be the unknown?

Answer 1

@BRAINIAC @Michael unfortunately i don't remember how to do these whoops

Answer 2

I don't think there is enough information here to identify the compounds.

Answer 3

In what contemporary genre is an essay such as Joseph Bruchac's u201cKeepers of the Earthu201d memoir best classified?
A.

Answer 4

There was a story that the present box had been made with some pieces of the box that had preceded it, the one that had been constructed when the first peop

Answer 5

Find the derivative of

Answer 6

PLEASE HELP!!
Complete the analogy below.
amplitude : loudness :: frequency : _________
A.

Answer 7

PLEASE HELP!!
Sound waves can best be described as _________.
A. opaque
B. polarized
C.

Answer 8

Which of the following major contributions were made by Maury?

creating navigati

Answer 9

Cousteau and Gagnan _____.

invented SCUBA
lived in Sealab II
developed u201csign

Answer 10

A scientist is studying the effect on human health of bacteria that live in the human intestine.

Answer 11

http://prntscr.com/kk56cx

Answer 12

Find the derivative dy/dx if

Answer 13

Alice wanted to compare birthday cake prices in two supermarkets. She wrote down the daily prices for a few days and found that the difference of the two sa

Answer 14

which of the following was directly caused by germanys invasion of Belgium

Answer 15

How do Hallyu2019s memories help advance the plot?

They suggest that Hally is afraid of his father.

Answer 16

math help pls

Answer 17

"If we fight the stranger, we shall hit our brothers and perhaps shed the blood of a clansman.

Answer 18

... help please? am i right?
http://prntscr.com/kjxchc

Answer 19

Solve.
33=8^5z+4

Answer 20

A car is moving southwest at a velocity of 10 meters per second. Five seconds later, it's going 40 meters per second.

Answer 21

If you run 10 km east and then turn around and run 7 km west, how much total distance have you travelled?
A.

Answer 22

Which of the following is a vector measurement?
A. 0.08 g/L
B. 6.5 m/s down
C. 45 m/s slowly
D. 15 km/hr