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Triss [41]
3 years ago
15

HELP ASAP PLEASE!!!!

Chemistry
2 answers:
Sunny_sXe [5.5K]3 years ago
8 0

Answer 1 KOH is a strong base
Travka [436]3 years ago
4 0

1 because OH is a base and H+ would be an acid

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After an electric sign is turned on, the temperature of its glass goes from 23.5°C to 65.5°C. The sign’s glass has a mass of 905
julia-pushkina [17]

The sign's glass absorbed 25466.7 J

<h3>Further explanation</h3>

Given

The temperature of glass :  23.5 °C to 65.5 °C

mass = 905 g

the specific heat capacity = 0.67 J/g °C

Required

Heat absorbed

Solution

Heat absorbed by sign's glass can be formulated :

\tt Q=m.c.\Delta T

ΔT=65.5 - 23.5 = 42

\tt Q=905\times 0.67\times 42\\\\Q=\boxed{\bold{25466.7~J}}

5 0
3 years ago
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6. Three ice cubes are placed inside a glass of hot chocolate. Which of the following best
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g If you have three identical containers (same volume) at the same temperature and pressure, each with a different gas. Containe
vekshin1

Answer:

<em>The three gases, in the three identical containers, will all have the same number of molecules</em>

Explanation:

If these three gases (Helium He, Neon Ne, and Oxygen O_{2}) are all contained in separate identical containers with the same volume. And they are all stored at the same temperature, and pressure. Then, they'll all contain the same number of molecules. This is in line with Avogadro's law which states that "Equal volume of all gases, at the same temperature and pressure, have the same number of molecules."

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Electronegativity _____. generally increases moving from left to right across a period generally decreases moving from left to r
mojhsa [17]
I believe the correct answer would be that electronegativity generally increases moving from left to right across a period. The periodic table of elements is arranged so that trends of the properties of the elements can be shown. For electronegativity, it decreases from right to left which means for the opposite direction it increases.
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If a quadrilateral has three angels measuring 60, 45 and 100 find the measure of the fourth angel
Nina [5.8K]
The sum of angels of a quadrilateral is equal to 360°.

∠A = 360 - (60 + 45 + 100) = 155
7 0
3 years ago
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