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4 years ago

PLEASE HELP ME I BEG YOU

2 answers:

7 0

1. Only if new observations led to a change in our current knowledge.

2. place their own moral views about the needs of society

3. True

4. False

5. True

6. True

7. Distillation

8. the number of electrons

9. the element becomes a different element

10. Atomic radiation will increase

11. Increases

I hope this helps!

slamgirl [31]4 years ago

5 0

1) Only if new observations led to a change in our current knowledge.

2) place their own moral views about the needs of society

3) FALSE

4) FALSE

5) FALSE(i think)

6) TRUE

7) Distillation

8) the # of neutrons

9) the element becomes a different element

10) atomic radii increase

11) decreases

i hope these are right and helps. please give me brainliest

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How is electronegativity related to covalent bonding?

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Answer:

Atoms must have similar electronegativities in order to share electrons in a covalent bond.

Explanation:

Covalent bonding is one of the bondings that occurs between the atoms of elements. It is the bonding in which atoms share their valence electrons with one another. However, the ELECTRONEGATIVITY, which is the ability of an atom to be attracted to electrons play a major role in the formation of covalent bonds.

When atoms of different electronegativities combine, the more electronegative atom pulls more electrons towards itself, hence, an IONIC bond is formed. However, when the electronegativities of the atoms are similar, the sharing of their electrons becomes stronger. Hence, ATOMS MUST HAVE SIMILAR ELECTRONEGATIVITIES in order to share electrons in a covalent bond.

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3 years ago

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What is the (OH-) in a solution with a pOH of 6.48

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Through manipulation of equations, we are able to obtain the equation:

$-pOH= log [ OH^{-}]$

Then we can transform the equation into:

$[ OH^{-}]= 10^{-pOH}$

Then we are able to plug in the pOH and directly get [OH-]:

$[ OH^{-}] = 10^{-6.48}$

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3 years ago

In the following reaction, how many grams of silver can be produced from 49.1 g copper?

notsponge [240]

166.4 g Ag grams of silver can be produced from 49.1 g of copper.

A mole is a very important unit of measurement that chemists use. A mole of something means you have 602,214,076,000,000,000,000,000 of that thing, like how having a dozen eggs means you have twelve eggs.

$1 mol Cu + 2 mol AgNO_3$ → $2 mol Ag + 1 mol Cu(NO3)2$

63.55 g Cu —> 2 x 107.688 g Ag

63.55 g Cu gives 215.376 g of Ag

So, 49.1 g Cu —> $\frac{215.376 g X 49.1 g}{63.55 g}$

= 166.4 g Ag

Hence, 166.4 g Ag grams of silver can be produced from 49.1 g of copper.

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brainly.com/question/26416088

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2 years ago

A lab is done using different metals and the density of the metals are recorded in a data table. What is the independent variabl

vovikov84 [41]

Answer: The independent variable is the type of metal being used.

{Note: The "dependent variable" is the "measured density" that corresponds to each of the metals."}.

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Explanation:

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The "independent variable", which is plotted on the "x-axis" (horizontal axis), is the variable that can be "controlled/manipulated". In this case, this would be the type of metal chosen.

The "dependent variable" , which is plotted on the "y-axis" (vertical axis) is the "obtained value/measurement/result" (that "cannot be controlled/manipulated").

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4 years ago

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Lostsunrise [7]

Answer:

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3 years ago