During which era did the supercontinent Pangaea break up?

A - Paleozoic

B - Mesozoic

C - Precambrian

D - Cenozoic

What is silver? Hows it formed? Who created it? Make sure you include the year. At least 5 sentences for each.

Is a dependent variable a constant or a control

10. What is the specific heat of an unknown substance if a 2.50 g sample releases 12 calories as its temperature changes from 25°C to 20°C?

Which statement is most accurate A. Cold soda will taste less bubbly, because the solubility of carbon dioxide in water is lower at lower temperatures. B.

6 (-4) + 15 6 (-4) + 15

Is a gas that is produced by the ultraviolet radiation in the air in the vicinity of welding operations?

How much MnO2 (s) should be added to excess HCl (aq) to obtain 295 mL of Cl2 (g) at 25 °C and 735 Torr?

Why do people describe water as a universal solvent

What is litmus paper used for? To indicate if all the reactants have been used up to determine if a chemical reaction has occurred to determine pH to detect the presence of water

You open your lemonade stand with 100 lemons, 5 bags of sugar containing 6 cups each, and 10 gallons of water (16 cups per gallon). Which statement is NOT true about the production of lemonade in your stand?