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ahrayia [7]
3 years ago
12

An Alkali could have a pH of A.1B.5C.7D.9​

Chemistry
2 answers:
Svetach [21]3 years ago
7 0
Answer: 7! Hope this helped c:
Free_Kalibri [48]3 years ago
5 0

<em>7</em>

<em>Scientists use pH to describe how acidic a substance is on a scale of 0 to 14. By definition, a substance is alkaline if it has a pH of over 7.</em>

<em>mark </em><em>me</em><em> as</em><em> brilliant</em><em> pls</em><em> ❤️</em>

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Calculate the specific heat capacity of a piece of ice if 1.30 kg of the wood absorbs 6.75×104 joules of heat, and its temperatu
Gre4nikov [31]

Answer:

c=2.0769\  \frac{J}{g\ \textdegree C}

Explanation:

-Specific heat capacity is given by the formula:

q=mc\bigtriangleup T

Where:

q is the heat gained or loosed by the substance

m is the mass of the substance

c is the specific heat of the substance

\bigtriangleup T is the change in temperature

#We make c the subject of the formula and substitute to solve for it:

q=mc\bigtriangleup T\\\\c=\frac{q}{m\bigtriangleup T}\\\\\bigtriangleup T=(57-32)\textdegree C=25\textdegree C\\\\\therefore c=\frac{6.75\times 10^4J}{1.3\times 1000\ g\times 25\textdegree  C}\\\\=2.0769 \ \frac{J}{g\ \textdegree C}

Hence, the specific heat capacity of the ice is 2.0769 \frac{J}{g\ \textdegree C}

8 0
3 years ago
Using the correct answer from Part B, calculate the volume of a rectangular prism with a length of 5.6 cm, a width of 2.1 cm, an
Alenkinab [10]
5.6 x 2.1 x 6.6 = 77.616 cm3
5 0
3 years ago
Hello, I study Home MS Physical Science B-IC. Are there quizlets I can look up for the cumulative exam I have to take today?
Ludmilka [50]
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8 0
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Which salt is formed by the reaction between hydrochloric acid and sodium hydroxide, write with chemical equation. .​
stepan [7]

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3 years ago
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frez [133]

Hi, you've asked an incomplete question. However, I assumed you are referring to the article found on the Scientific American website.

Explanation:

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Because it is only after mating occurs at this point that their eggs are laid, that is why scientists believe that cicadas only reproduce every 13 or 17 years.

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3 years ago
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