It’s time to make the ice pieces. for ice piece 1, place 2 teaspoons of water into one of the spaces in the ice cube tray. to make ice piece 2, place 2 teaspoons of water into the sealable plastic bag. carefully squeeze as much of the air out of the bag as possible without spilling any water. then seal the bag. place the sealed bag on a flat surface in the freezer. place the ice cube tray in the freezer at the same time. leave both in the freezer for four hours. record the start time and the time when you can remove the ice.

Can someone me with 1 to 4 plz. fast

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride