3 years ago

How do you know when writing out equations the state of the element or compound

Chemistry

1 answer:

erica [24]3 years ago

7 0

Answer:

The state of matter is usually written in parentheses as a subscript directly after the element or compound.

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what is the volume of a book that has a width of 10cm,a length that is 2 times the width,and a height that is half the width

Masteriza [31]

width=10cm

length=2xwidth=2x10=20cm

height=width/2=10/2=5

V=w*l*h=10*20*5=1000cm^3

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3 years ago

Read 2 more answers

Relative formula mass of glucose? (C6H12O6)

Rom4ik [11]

To find the mass of glucose, you must multiply the atomic weight of each of the elements in the molecule by the subscripts in the formula:

$C_{6}=6*(12.01g)=72.06g$

$H_{12}=12*(1.008g)=12.096g$

$O_{6}=6*(15.999g)=95.994g$

Then you add all of them together:

$72.06g+12.096g+95.994g=180.15g$

Therefore, the molar weight of glucose is 180.15 grams.

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3 years ago

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nlexa [21]

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Explanation:

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3 years ago

What is the concentration of hydronium ion in a 0.121 M HCl solution?

kogti [31]

Answer:

C) 0.121 M

Explanation:

HCl + H₂O = H₃O⁺ + OH⁻

.121M .121M

HCl is a strong acid . It will dissociate almost 100 % so the concentration of acid and hydronium ion formed will be equal . It is to be noted that hydronium ion is formed due to association of H⁺ and H₂O . H⁺ is formed due to ionisation of HCl .

So concentrtion of hydronium ion ( H₃O⁺ ) will be .121 M.

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3 years ago

What type of relationship exists between two organisms when one organism benefits from the relationship and the other organism b

kkurt [141]

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b competition .

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