What is the antependium? a. It is the front surface of a block altar. b. It is the back surface of a block. c. It is the top of an altar. Please select the best answer from the choices provided A B C

Which of the following is a presentation cue? a. crossing your arms b. mumbling c. repeating words d. whistling

Astudent randomly draws a card from a standard deck and checks to see if it's his favorite suite he then returns the cards to the deck

Raul has one solution that is 20% acid by volume and one solution that is 50% acid by volume. he plans to mix together some of each solution to create 30 milliliters of a solution that is 40% acid by volume. how many milliliters of the 20% acid solution should raul use to create the 40% acid solution? can someone explain this to me? i know that the answer is 10 milliliters, but i don't know how to get it.