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4 years ago

How did Mendeleev's work help in the discovery of new elements ?

Chemistry

2 answers:

KengaRu [80]4 years ago

6 0

It helped unlock many types of door to science and life

BARSIC [14]4 years ago

5 0

It helped future scientists with their studies

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Describe how muscles make movement

slamgirl [31]

Answer:

Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.

Explanation:

Hope it helps

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3 years ago

In any experiment the accuracy of the data and experiment can be improved. What are some things that can be done to improve data

NARA [144]

Answer:

Conduct more trials.

Add less variables.

Choose a different person

Explanation:

More trials gives plenty of data to be examined.

Less variables makes for less confusion, and less things to keep track of.

Different person ensures that the experiment is not being done by one single person who could be messing up the data

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3 years ago

Read 2 more answers

After your done with the second step,you will be left with a clear colorless liquid. What should be done to the liquid to finish

mafiozo [28]

In order to retrieve the soluble salt from the solution, crystallization must be carried out.<span />

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3 years ago

Write the complete ionic equation for the reaction that takes place when aqueous solutions of strontium hydroxide and lithium ph

Nesterboy [21]

Answer : The net ionic equation will be,

$3Sr^{2+}(aq)+2PO_4^{3-}(aq)\rightarrow Sr_3(PO_4)_2(s)$

Explanation :

In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The given balanced ionic equation will be,

$3Sr(OH)_2(aq)+2Li_3PO_4(aq)\rightarrow 6LiOH(aq)+Sr_3(PO_4)_2(s)$

The ionic equation in separated aqueous solution will be,

$3Sr^{2+}(aq)+6OH^{-}(aq)+6Li^{+}(aq)+2PO_4^{3-}(aq)\rightarrow Sr_3(PO_4)_2(s)+6Li^+(aq)+6OH^{-}(aq)$

In this equation, $Li^+\text{ and }OH^-$ are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be,

$3Sr^{2+}(aq)+2PO_4^{3-}(aq)\rightarrow Sr_3(PO_4)_2(s)$

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3 years ago

Why are some compounds that contain carbon not considered as organic compounds?

Arlecino [84]

Because it may not contain Hydrogen or Oxygen

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3 years ago