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DC
and she is unsure of what IT IS! She does a few
experiments and finds that the chemical compound
has the following percent composition:
Mg: 10.89%
CI: 31.77%
0 57.34%
ty
Follow the steps below to figure out the empirical
formula
a Using a hypothetical sample of 100 grams, write
the mass of each element in a sample of 100
grams.
11 Write the empirical formula.
0/1
Do not worry about adding
subscripts.
For example, H, will be H20.
CMg
zoom in
The astronaut continues her studies on M
discovers another pure sample to analyze. She
12
1. Calculate the moles of Mg.

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)