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dangina [55]
3 years ago
10

Definition of periodic trends

Chemistry
1 answer:
Dmitriy789 [7]3 years ago
7 0

Answer:

.Periodic trends are specific patterns in the properties of chemical elements that are revealed in the periodic table of elements. Major periodic trends include electronegativity, ionization energy, electron affinity, atomic radii, ionic radius, metallic character, and chemical reactivity.

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A gold-colored ring has a mass of 17.5 grams and a volume of 0.82 mL. What is the density of this ring?
max2010maxim [7]

Answer:

21 g/mL

Explanation:

To solve this problem, first look at the density equation, which is D=M/V, which D stands for density, M stands for mass, and V stands for volume. When you substitute in the variables, you get D=17.5/.82, which is equivalent to 21.34. However, since we need to pay attention to the sig fig rules for multiplying, we need to have the same amount of sig figs as the value with the least amount of sig figs, which is the number .82. .82 has two sig figs, so you round down. Your answer will be 21 g/mL.

4 0
3 years ago
Define Acid and alkalis​
kicyunya [14]

Answer:

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Alkalis have a pH greater than 7. Alkalis contain lots of hydroxide ions

<u><em></em></u>

<u><em>Please mark as brainliest if answer is right </em></u>

Have a great day, be safe and healthy  

Thank u  

XD

7 0
3 years ago
Read 2 more answers
The particles remain seperate and don’t combine? What is this a mixture or a solution?
djyliett [7]
It is actually a Colloid, which means it will never mix and settle.<span />
3 0
3 years ago
Throughout the reflection, make sure you have a copy of the Student Guide and your data table. Choose the terms that complete th
pogonyaev

Answer:

A. relative humidity B. air temperature C. air pressure D. atmospheric

Explanation:

3 0
3 years ago
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Should we only write condensed formula in chemical equations (for lessons like carbon and compounds). What did your teachers say
Firlakuza [10]

Answer:

Here's what I get.

Explanation:

  • If your teachers don't ask for a specific type of formula, a condensed structural formula should be OK.
  • If they ask specifically for a structural formula or a bond-line formula, that is what you must give.

Bottom line: ask your teachers in advance what they expect.

7 0
3 years ago
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