3 years ago

Can someone help me please

Chemistry

2 answers:

Anika [276]3 years ago

4 0

Answer:

Explanation:

Snss

stepan [7]3 years ago

3 0

Answer:

Fat stores

Explanation:

Its not a protein

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Look at the periodic table.

zhuklara [117]

Answer:

$Mg^{+2}$

Explanation:

The oxidation state of S is (-2) and that of Mg is (+2) since Mg loses two electrons to S

5 0

3 years ago

The ph of a solution for which [OH]= 1.0 x 10^-4 is? A 10 B 14 C 11 D 9 E 7

zhenek [66]

To find pH, use the following formula ---> pH= - log [H+]

so first we need to calculate the [H+] concentration using the OH concentration. to do this, we need to use this formula--> 1.0x10-14= [H+] X [OH-], so we solve for H+ and plug in

[H+]= 1.0X10-14/[OH-]---> 1.0 x 10-14/ 1.0 x 10-4= 1.0 x 10-10

now that we have the H+ concentration, we can solve of pH

pH= -log (1.0x10-10)= 10

answer is A

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3 years ago

Which statement best describes a physical change?

yulyashka [42]

The answer is the third one .

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4 years ago

How many moles of H2SO4 are needed to prepare 200 mL of a 1.0 M solution?

jok3333 [9.3K]

The answer is 0.2moles

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3 years ago

Give the half-equation for the reaction at the anode, during

oee [108]

The answer would be B

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3 years ago