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How many molecules are found in 0.175g of fluorine gas, F2?

The book says: 4.06 x 10^21

I keep finding : 2.77 x 10^21

Please tell me if I am right or wrong. If I am wrong please explain how it should be done.

Thank you

I've seen many people put a layer of marker before adding colored pencil to their work. I want to know how that helps?

Many Thanks

Would anyone help me out and give me characters I could draw.

Example. Olaf, Mario characters, Mr.potato head and etc.

The coding Strand of a section of a gene is given below:

GTA ACC GTA TTG CAG CTA TTA GCA GCC ATG

My answers for the two strands below right or wrong?

Template strand:

CAT TGG CAT AAC GTC GAT AAT CGT CGG TAC

mRNA:

GUA ACC GUA UUG CAG CUA UUA GCA GCC AUG

Which strand (template or mRNA) would the promoter be found on? And why?

Predict the amino acid sequence of the following template DNA strand: ATTACCTAGGCGGC (assuming this belongs to the exon region)

Amino acid Sequence: ?

Given the following coding strand ATC CGT TAG CTC, find the template and mRNA strand

My answers , right or wrong?

Template strand: TAG GCA ATC GAG

mRNA strand: AUC CGU UAG CUC

Can someone explain how to solve this question please?

If the ratio of Heather's earning to Erica's was 8 : 3 and that of Erica's to Nicholas's was 7 : 1, what was the earnings ratio of Heather : Erica : Nicholas? Express the ratio in lowest terms.

I love to draw, I'm not amazing at it but average. I started drawing two years ago after I got inspired by a drawing on instagram. I worked a lot trying to get better each day ( I had great motivation and thought I was doing well. But now seeing so many great artists on instagram, I started comparing my work to theirs (putting my work down) and I have no motivation/inspiration/drive to draw because I now think my work is crap. I will sit for hours thinking of what to draw and give up and sometimes when I do start drawing I stop after a few minutes because I think I'm no good.

Has anyone experienced something like this? If yes how did you come over this?

Thanks in advance :)

What exactly is gouache? and how is it used?

Sometimes my watercolour paper starts ripping/disintegrating I guess you can say, how can I prevent this? Just wait for each layer to dry?

I love using watercolours, I am fairly new to it. I don't have much experience ... no one has taught me and I don't know much but if someone could help me out I'd really appreciate :)

is 3/2 ^ 3 the same as (3/2)3

or when there is no brackets the exponent only goes to the numerator ?

I have a math problem and I'm just getting confused with one part, the minus sign in the middle. Which answer would it be?

Simplify : (6) (3x-y) - (4)(2x+y)

= 18x -6y - 8x +4y = 10x -2x

or

=18x -6y - 8x - 4y = 10 x -10y

Thank you