Determine the temperature change
If 60 of heat is added to an aluminum can with a mass of 17.7 , what is its temperature change? Specific heat capacity of aluminum is 0.903 .
Express your answer using two significant figures.
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Calculate the number or calories of heat energy required for warming 34.6g of water from 18.9 celsius to 29.9 celsius
A 2.067-g sample of a monoprotic acid was dissolved in water. It took 25.24 mL of a 0.1578 M NaOH solution to neutralize the acid. Calculate the molar mass of the acid.
A solution was prepared by mixing 50.00 mL of 0.190 M HNO3 and 124.00 mL of 0.150 M HNO3. Calculate the molarity of the final solution of nitric acid.
Suppose 321 grams of methylamine (CH3NH2) and 332L of oxygen gas are mixed together in the reaction below at STP. how many grams of water should be prouduced?
IR Wavelengths Ultraviolet radiation is of particular relevance to a study of the ozone layer. Why? What about UV radiation affects ozone? What role does oxygen play with regard to filtering sunlight?
Consider the titration of 100.0 mL of 0.200 M acetic acid (Ka = 1.8 10-5) by 0.100 M KOH. Calculate the pH of the resulting solution after the following volumes of KOH have been added. Enter all answers to two decimal places.
KCl has the same structure as NaCl (Face-centered). The length of the unit cell is 628 pm. The density of KCl is 1.984 g/cm^3, and its formula mass is 74.55 amu. Using this information, calculate Avogadro's number.
Calculate the pH of the resulting solution at the following points of the titration curve: 83.00 mL of the titrant, NaOH, have been added.
The balanced equation for a reaction in the process of the reduction of iron ore to the metal is shown below. Fe2O3(s) + 3 CO(g) 2 Fe(s) + 3 CO2(g) (a) What is the maximum mass of iron, in grams, that can be obtained from 341 g of iron(III) oxide?
A certain first-order reaction (A->products) has a rate constant of 6.60×10-3 s^-1 at 45 C. How many minutes does it take for the concentration of the reactant, [A] , to drop to 6.25 % of the original concentration?
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Read the sentences A-H below. Determine the best order and rearrange the sentences to create a well-written paragraph (topic, body, conclusion).
Where should you locate your business? How should you promote, price and distribute your product?
Problem: Is hypercompetitive communication ethical? Explain.
Make a Business Presentation using Power Point Subjects for you presentation could be one of the following: Your Career Choice
How to write a formal email asking for information? Your friend told you about an upcoming seminar and gave only a brief description and email to contact.
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Suggest the best communication channels for the following messages. Assume that all channels are available. Be prepared to explain your choice.