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Questions in chemistry

📝 Answered - Find the mistake in the following chemical equation: \[ \text{Cu(NO}_3\text{)}_2(s) + \text{CuO}(s) \rightarrow 2\text{NO}(g) + \text{O}_3(g) \]

📝 Answered - Is melting cheese a physical or chemical change?

📝 Answered - When a car travels around a curve in the road, what helps to keep the car driving in a curved path?

📝 Answered - What type of rock does preexisting rock become?

📝 Answered - Which process requires the removal of heat, melting or freezing? Is it evaporation? What is it? Why?

📝 Answered - Calculate the molar mass of the following compounds: - FeCl3 - Fe2(SO4)3 - PbO - PbO2 - Pb3O4

📝 Answered - What type of eruption is associated with a shield volcano?

📝 Answered - Which of the following compounds would be most effective in lowering the melting point of ice on roads? A. CaCl2 B. NaCl C. K3PO4 D. K2SO4

📝 Answered - What is a harmful effect of electrical resistance?

📝 Answered - Calculate the density of a rectangular metal bar that is 7.00 cm long, 4.00 cm wide, and 1.00 cm thick, with a mass of 352 g.