[melgashop]

Hello everyone!

I'm trying to solve some questions my teacher asked me to and I  have doubts on 2 of them:
If I mix 200µl of Piruvat (6mM) with 100µl of a buffer, what's the concentration of the Piruvat in that mixture?

And just another question: if I put 1g of a tissue and I disolve it in 25ml of buffer, what's the % (mass/volume)? 4%?

Thank you!

[Borek]

If I mix 200µl of Piruvat (6mM) with 100µl of a buffer, what's the concentration of the Piruvat in that mixture?

http://www.chembuddy.com/?left=concentration&right=dilution-mixing

And just another question: if I put 1g of a tissue and I disolve it in 25ml of buffer, what's the % (mass/volume)? 4%?

Assuming volume didn't change. You can't be sure. But most likely you are OK.