The study of chemistry physics and astronomy are closely related true or false

7. While prospecting in the North Woods, Joe found a gold nugget which had a density of 19.2 g/cm3. Joe dropped the gold into water in a graduated cylinder, the water level increased by 15.0 mL. How many grams of gold did he have? (Ans: 288 g)

For the reaction NH4Cl (s) →NH3 (g) + HCl (g) at 25°C, ΔH = 176 kJ/moland ΔS = 0.285 kJ / (mol - K). What is the ΔG, and will this reaction be spontaneous in the forward direction? 169 kJ/mol; no 91 kJ/mol; no 91 kJ/mol; yes -91 kJ/mol; yes

Household bleach is an aqueous solution of sodium hypochlorite (NaClO), and its concentration is often measured as a percent by weight. For example, concentrated household bleach has a concentration of 8.25% (w/w), which means there are 8.

Can a pressure change shift the equilibrium position in every reversible reaction? Explain

A reaction mixture initially contains 22.02 g Fe2O3 and 14.66 g CO. Assume that the reaction will progress to 100% completion. What mass (in g) of the excess reactant is leftover?

Prevailing winds peru

Foods labeled "fat free" can actually contain less than 0.5 grams of fat.

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.

Using ohm's law, explain how voltage changes in relation to current, assuming that resistance remains constant.

An average copper penny minted in the 1960s contained about 3.000 g of copper. how much chalcopyrite had be mined to produce 100 pennies?