A compound contains only C, H, and N. Combustion of 28.0 mg of the compound produces 26.8 mg CO2 and 32.9 mg H2O. What is the empirical formula of the compound? (Type your answer using the format CO2 for CO2.)

An unknown compound has the formula C_xH_yO_z.You burn 0.2115 g of the compound and isolate 0.5164 g of CO₂ and 0.2114 g of H₂O. What is the empirical formula of the compound? If the molar mass is 72.1 g/mol, what is the molecular formula?

A set of exam scores is normally distributed with a mean = 80 and standard deviation = 8.
Use the Empirical Rule to complete the following sentences.

68% of the scores are between  and .

95% of the scores are between  and .

99.7% of the scores are between  and .

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1.810 g chlorine in methanol is added to 2.200 g of zinc metal. After the reaction is complete, the remaining unreacted zinc was weighed as 0.5260 g. Using the masses of the reacted zinc and chlorine, calculate the empirical formula of zinc chloride.

In their article, ”The Colonial Origins of Comparative Development: An Empirical Investigation,“ Acemoglu, Johnson and Robinson (2001) claim to have established a causal effect of institutional quality on per capita income. Briey explain the argument upon which this claim is based.

Explain Thomas model and the parameters (A, B, C and D). Discuss

Calibration and Validation process and why do you need Excel-based Solver for

Calibration. Is Thomas model a simulation model? Explain. Is it conceptual,

physical or empirical model?

International trade theory implies that international trade benefits all trading countries. However, empirical observation confirms widespread restrictions to international trade flows imposed officially by countries. How might these two facts be reconciled? Discuss.

Isopropyl alcohol is composed of C , H and O combustion of 0.255g of isopropyl alcohol produces 0.561g of co2 and 0.306g of h2o . Determine empirical formula of isopropyl alcohol Cx Hy Oz ? ?

Please I need the answer with explantion ^_^

1. Given all-time low interest rates, companies should borrow long term and use the borrowed money to takeover other firms. Discuss with suitable reasons, citing empirical evidence, whether you agree or disagree with this statement

The extra credit assignment is for a paper 2-3 pages including references. The topic is anything related to psychology that has empirical evidence for coping or improving effectiveness. Hopefully this is something that you engage in (e.g., exercise, meditation, yoga etc...).