Calculate the TOTAL heat absorbed (in kJ) when 69.4 g of water is heated from 23.7°C to 126°C

Which of the following substances is most likely to be a liquid at room temperature? a. formaldehyde, H₂COH₂CO b. fluoromethane, CH₃FCH₃F c. hydrogen cyanide, HCN d. hydrogen peroxide, H₂O₂H₂O₂ e. hydrogen sulfide, H₂S

Is the process of kno3 dissolving in water spontaneous?

An element's atomic number is 40. How many electrons would an atom of this element have? An atom of element A has 111 protons.

Which part of Dalton's theory did Thomson's findings dispute?

Why is activation energy required to start some reactions?

If enough heat is added to a substance, electrons begin to separate from the atomic nuclei. Which process does this describe? A. A solid turning into a liquid B. A plasma turning into a gas C. A gas turning into a plasma D.

What is the percent of H2O in a sample of a hydrate whose mass is 1.1290 g if the mass of water in the sample was 0.1660 g?

Why does conduction occur in solids and liquids easier compared to gases? Because the particles in gases are closer together and move slower Because the particles in gases are farther apart and move faster.

Write a balanced equation for the combustion of gaseous methane (CH4), a majority component of natural gas, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water.

Pedro listed characteristics of two types of protists in a chart. Two Groups of Protists X Y Often multicellular Are usually autotrophic Include euglenoids Are heterotrophs Reproduce using spores Include different molds Which headings best complete