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____ [38]
3 years ago
7

What has more energy than gas?

Chemistry
1 answer:
amid [387]3 years ago
3 0
Es algo de ciencias
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What is the pOH of a 0.025 M [H+] solution?
MaRussiya [10]
POH=14-pH

pH=-lg[H⁺]

pOH = 14 + lg0.025 = 12.4
5 0
3 years ago
Read 2 more answers
A quantity of 85.0 mL of 0.900 M HCl is mixed with 85.0 mL of 0.900 M KOH in a constant-pressure calorimeter that has a heat cap
san4es73 [151]

Answer:

There is a 1:1 neutralization reaction,  so, number of moles:

0.085 l * 0.900 mol/ L = 0.0765 mol HCL

The heat produced:  0.0765 mol * -56.2 kJ/mol = -4.229 kJ (this is the heat of neutralization)

Change in temperature:    The mass to use in the equation Q=cmT.  

4229 J / (4.186 J/gC*170 g) = 6.042 C

Add to the initial temperature:

18.24 + 6.042 = 24.29 C°

3 0
3 years ago
Which of the substances in the chart has the least density?
3241004551 [841]
Answer:
            Option-D (Piece of Wood) is the correct answer.

Explanation:
                   Density is related to mass and volume as,

                             Density  =  Mass / Volume
For Wood,
                             Density  =  42.5 / 50

                             Density  =  0.85

You can calculate remaining densities by yourself. Among all the density of Piece of Wood is the least.
3 0
2 years ago
Acids containing polyatomic ions are named according to the name of the anion.​ true or false
Ray Of Light [21]

Answer:

true

Explanation:

Names for such acids consist of the prefix “hydro-“, the first syllable of the anion, and the suffix “-ic”. Complex acid compounds have oxygen in them. For an acid with a polyatomic ion, the suffix “-ate” from the ion is replaced with “-ic.”

5 0
3 years ago
What kind of substance is rust​
Sauron [17]
Iron oxide!!!!!!!!!!!!!!!!!!!!
6 0
3 years ago
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