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seropon [69]
3 years ago
13

"In a test tube was add a piece of Zn and 2 mL of HCl (.1M). This reaction produced ZnCl2 and Hydrogen gas. This reactions is a:

Chemistry
1 answer:
omeli [17]3 years ago
4 0

Answer:

d.  A single replacement reaction.

Explanation:

The zinc replaces the hydrogen in the hydrochloric acid.

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How many grams of glucose are needed to prepare 400. g of a 2.00% (m/m) glucose solution g?
Dominik [7]
The grams   of glucose  are  needed  to  prepare  400g  of  a 2.00%(m/m)  glucose  solution  g  is  calculated  as  below

=% m/m =mass  of the solute/mass  of  the  solution  x100

let mass of   solute  be represented  by  y
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 grams  of  glucose  is  therefore =2/100 =  y/400
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y= 8.0 grams



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3 years ago
How do atmospheric updrafts affect clouds?
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