Help please

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Hey free points ! people i have a few math questions on my profile consider looking at them i have to get done in 30 mins!

You are looking for your first credit card. you plan to use this credit card only for emergencies and to pay the credit card balance in full each month. which credit card feature is most important? a. no annual fee b. low apr c. generous rewards program d. no balance transfer fee select the best answer from the choices provided