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Julli [10]
4 years ago
11

Mendeleev put elements in groups while creating the periodic table. What important role do groups play in the structure of the p

eriodic table? (5A)
Groups show similar chemical properties about the elements.
Groups show similar chemical properties about the elements.

Groups show what state of matter the element will be at ground state.
Groups show what state of matter the element will be at ground state.

Groups show how important elements to living things.
Groups show how important elements to living things.

Groups show the energy level of the element.
Groups show the energy level of the element.
Chemistry
1 answer:
NikAS [45]4 years ago
3 0

Answer:

Groups show similar chemical properties about the elements

Explanation:

The periodic table is divided into groups and periods. Groups are vertical while periods are horizontal.

All elements in the same group possess the same number of outermost shell electrons. This number of outermost shell electrons controls the reactivity of the elements in the group.

Hence, groups show similar chemical properties of the elements in them, Groups separate elements into families which assist in the speedy study of elements.

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Convert 400g of phosphoric acid to moles.
Katarina [22]

Answer: 4.08183 or you can round it to 4

Explanation:

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3 years ago
Using the development of the atomic model.explain how scientists refine and build off each other’s findings, in order to develop
sineoko [7]
<span>The Atomic Model was something that was first developed by Neils Bohr. Several years later, Schrodinger took Bohr's basis of a theory and developed it into something larger. So as we can see, theories are a bit like puzzles. When first starting out, one person develops something, or has an idea on something. Others trying to either prove or disprove the original findings, will then test things in a new way, revealing more and more of the puzzle. As the puzzle becomes more and more clear, there is more and more that is revealed. Eventually, we get to a point where we have almost the entire picture, however we are still missing a few key pieces that complete the puzzle. We can see the big picture, but you can not exactly prove out what exactly the details are. This is how scientists such as Bohr and Schrodinger use each others research to build and refine theories. Eventually, we reach a point where we are only missing maybe one or two pieces, and at that point, a theory transitions into almost fact, such as evolution.</span>
7 0
3 years ago
Question 2 (1 point)
babunello [35]

Answer:

o and cl

Explanation:

metals and nonmetals tend to form ionic bonds

7 0
3 years ago
Give the measurement following sig fig rules for tools. Do not forget the unit after your number measurement.​
In-s [12.5K]

Answer:

Explanation:

You are not really helped by what is hold the liquid. Beakers and cylinders come on a lot of sizes. I hate to be crabby about things like that, but you really need to be aware that the question is slightly flawed (not your fault).

The beaker, you'd be like to get 1 sig digit. You have to be awfully careful about claiming more. So the and is 50 mL, but that mL is a guess and the 50 is not totally accurate, but what would you say the second digit is? 48 or 47? You don't really know. Maybe even 49.

The graduated cylinder is a little better. Read the bottom of the meniscus (the bottom of the 1/2 bubble). I think you can get 2 sig digs., so the answer is 36 mL. But everything also depends on what you have been told.

5 0
3 years ago
Draw a structural formula for trans-1-bromo-3-isopropylcyclobutane.
LUCKY_DIMON [66]

We have to draw the structural formula of  trans-1-bromo-3-isopropylcyclobutane.

The structure is shown below in Figure1.

The molecule trans-1-bromo-3-isopropylcyclobutane has four atoms in the skeleton and Br atom is attached at 1 position and isopropyl group at 3-position.

Trans structure means both groups are in opposite directions.

5 0
3 years ago
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