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ra1l [238]
3 years ago
8

(BRAINLIEST) Which of these statements best describes an Alkali?

Chemistry
1 answer:
Sedbober [7]3 years ago
4 0

Answer:

The number of principle energy level increases and the number of valance electrons remain the same.

Make Me Brainliest.

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A 135-g sample of a metal requires 2.50kj to change its temperature from 19.5 degrees Celsius to 100.0 degrees Celsius. What is
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2500 = 0.135 x C x 80.5

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____________ is a colorless, odorless gas that forms when fuels are not completely burned.
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In the reaction between p-aminophenol and acetic anhydride to form acetaminophen, 0.450 mL of water was added. What was the purp
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Answer:

In the reaction between p-aminophenol and acetic anhydride to form acetaminophen, 4.5 ml of water were added. This was done to recover the product out the container. Water was used as a means of carrying out the product out the container. However, it should be noted that we would want a small amount to be added in order to avoid the product dissolving onto it.

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7 0
3 years ago
PLS HELP!! <br> Balance this equation: __H2+ 2 O2---&gt; 2 H2O
alekssr [168]

Answer:

 2H₂   +   O₂  →   2H₂O

Explanation:

The expression of the equation is given as:

              _H₂   +   2O₂  →   2H₂O

Now for expression above,

                           Reactants                                          Products

H                              2                                                            4

O                              4                                                           2

to balance the equation, we use 2 moles of hydrogen gas and 1 mole of oxygen gas;

           2H₂   +   O₂  →   2H₂O

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3 years ago
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