Answer:
12. 2.9 g= 0.0029 13. 14.7 L = 14700 ml
14. The chemical formula of magnesium hydroxide is Mg(OH)2, and its molar mass is 58.32 g/mol.
Explanation:
Ok i'm not really sure I guess is b
Answer:
Calorimetry is the science or act of measuring changes in state variables of a body for the purpose of deriving the heat transfer associated with changes of its state. One could easily calculate the heat capacity of a substance by creating an experiment. This can be done by first gathering deionized water to measure the heat exchange between the metals and styrofoam cups which will serve as the calorimeter. Put these on a weigh scale and make sure to zero it. Afterward, add 100 mL of deionized water to the cups, find the mass of the water afterword accurately. Next, get 50 mg of copper metal and put it in a test tube within the beaker and measure it on the scale accurately. Next, heat the metal, but do not allow the beaker to get below the level of the metal in the test tube. Once the water is boiling, transfer it to the calorimeter. Be sure to remove the drop of water on test tube with towel, but do this quickly to avoid cooling. Next, transfer the metal to the calorimeter and cover. One should swirl the solution to be sure a full heat exchange happened. Be sure to dry the metal quickly before putting it in the calorimeter. Furthermore, measure the solution temperature to the first decimal place. This will complete the experiment and one should easily be able to calculate the heat capacity of the substance. Overall, their are many experiments that can measure a substance's heat capacity, but this experiment specifically measures the heat capacity of various metals using a simple calorimeter.
Explanation:
Be sure to check for grammatical errors, but overal idea should be good.
Explanation:
(a) potassium oxide with water
According to reaction,1 mole of potassium oxide reacts with 1 mole of water to give 1 mole of potassium hydroxide.
(b) diphosphorus trioxide with water
According to reaction,1 mole of diphosphorus trioxide reacts with 2 moles of water to give 2 moles of phosphorus acid.
(c) chromium(III) oxide with dilute hydrochloric acid,
According to reaction,1 mole of chromium(III) oxide reacts with 6 moles of hydrochloric acid to give 2 moles of chromium(III) chloride and 3 moles of water.
(d) selenium dioxide with aqueous potassium hydroxide
According to reaction,1 mole of selenium dioxide reacts with 2 moles of potassium hydroxide to give 1 mole of potassium selenite and 1 mole of water.
D. No limits on government leadership
A Democratic government sets limits on the amount of power the government has, the people have more power. So free elections, voluntary action, citizen participation; All of these involve democratic things and gives power to the people. No limits on the government leadership would take power from the people, which is unacceptable in a democratic government.