Scientific notation of 50500 up to three significant figures

A bomb calorimetric experiment was run to determine the enthalpy of combustion of ethanol. The reaction is The bomb had a heat capacity of 490 J/K, and the calorimeter contained 730 g of water. Burning 4.

If the specific heat of iron is 0.449 J/g·K, what is the enthalpy change of this process for 100 g of Fe (s) ? Is the process endothermic or exothermic? Explain.

What is the value of the charge on an ion with 28 protons and 26 electrons?

Which acid is weaker? 1. they have the same strength. 2. hbro2 3. hclo2?

HALP Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: () BaO2 + () H2SO4 → () H2O2 + () BaSO4

Which of the following is not a drawback of using lithium batteries? A. Lithium's reactivity can cause explosions. B. Lithium batteries require the use of toxic materials. C. Lithium is more easily oxidized than any other metal. D.

Considering the concept of surface area affecting the rate of reaction, explain why grain storage silos sometimes explode spectacularly?

What solution can you add to of the mixture of NH4 (aq) and Ca2 (aq) to precipitate one cation while keeping the other cation in solution?

Which substance was developed by chemists

Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats.