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kap26 [50]
3 years ago
12

Recording a person’s fingerprints using ink or digital imaging is called a(n)____.

Chemistry
1 answer:
NNADVOKAT [17]3 years ago
5 0
It is called a dactyloscopy
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Whats the length of an aluminum rod at 65 c if its length at 15 c is 1.2 meters
Furkat [3]
15c - 1.2m
1c - 1.2/15 = 0.08m
65c - 5.2m
4 0
4 years ago
How much energy is generated from freezing 2.5 g water
zvonat [6]
200 calories.
Explanation:
The (latent) heat of fusion of a material, is either one of:
1) the heat required to melt the material without
temperature change or
2) the heat removed from the material to freeze it
without temperature change.
For water this latent heat is 80 cal/g. Multiply this by
2.5 g to get 200 cal.
6 0
3 years ago
Why is it that when you have a strong acid and weak base your equivalence point is less than 7
yKpoI14uk [10]

Explanation:

When a strong acid, say HCl reacts which a weak base, say NH_3, the reaction is shown below as:-

\text{NH}_3 (\text{aq}) + \text{HCl} (\text{aq}) \rightarrow {\text{NH}_4^+}(\text{aq}) + \text{Cl}^-(\text{aq})

The salt further reacts with water as shown below:-

\text{NH}_4^+ + \text{H}_2\text{O} \rightarrow \text{H}_3\text{O}^+ + \text{NH}_3

Formation of \text{H}_3\text{O}^+ lowers the pH value of the solution as more hydrogen ions leads to less pH.

3 0
3 years ago
How many electrons are in the p sublevel?​
mixas84 [53]

Answer:

6

Explanation:

The p sublevel has 3 orbitals, so can contain 6 electrons max. The d sublevel has 5 orbitals, so can contain 10 electrons max. And the 4 sublevel has 7 orbitals, so can contain 14 electrons max.

4 0
3 years ago
Which of the following best describes weight? The amount of space an object takes up The amount of matter in an object The force
Alenkasestr [34]
The force of an object due mass and gravity.it can also be defined as the force exerted by gravity on a body
4 0
3 years ago
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