Question

heating CuO powder to change its properties and acquiring more oxygen*** You can assume all of...

heating CuO powder to change its properties and acquiring more oxygen***

You can assume all of the sample has reacted to form the CuO product when the mass of the product changes by less than 1% from the previous weighing.

True

False

You can assume that all of the sample has reacted to form the CuO product after a single heating.

True

False

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The yield of the product depends on the stoichiometry of the reaction and the purity of the starting material. Heating ensures that volatile impurities and water evaporate, leaving behind the purified CuO. Heating has no role in deciding the yield of the product. Hence, the given statement is false.

The given statement is true. Cu reacts with O2 over a narrow temperature range to form CuO. Usually, the mixture is heated at a high temperature to ensure that the product is formed.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. Elisa, an HR manager for a medium-sized company, is assigned to update all job descriptions...
1. Elisa, an HR manager for a medium-sized company, is assigned to update all job descriptions and job specifications for her company. Elisa will begin by collecting information about each job title, as well as about the kinds of activities and responsibilities that go with each job. After she thoroughly analyzes a job, she will write the job description and job specifications for that job. True False 2. People over 65 years old represent the unemployed generation. the single-parent family...
Sellers would offer _____ for sale as prices decreases and thus the supply curve is ____...
Sellers would offer _____ for sale as prices decreases and thus the supply curve is ____ sloping. Select one: a. less; upward b. more; upwards c. more; downwards d. less; downwards You should decide to go to a movie: Select one: a. If the marginal benefit of the movie exceeds its marginal cost.. b. If your income will allow you to buy a ticket c. because movies are enjoyable d. If the marginal cost of the movie exceeds its marginal...
2. Which of the following is a negation for ¡°All dogs are loyal¡±? More than one...
2. Which of the following is a negation for ¡°All dogs are loyal¡±? More than one answer may be correct. a. All dogs are disloyal. b. No dogs are loyal. c. Some dogs are disloyal. d. Some dogs are loyal. e. There is a disloyal animal that is not a dog. f. There is a dog that is disloyal. g. No animals that are not dogs are loyal. h. Some animals that are not dogs are loyal. 3. Write a...
1)To lower the energy barrier in a reaction, enzymes change the path of the reaction between...
1)To lower the energy barrier in a reaction, enzymes change the path of the reaction between the reactants and products by doing what? A. Destabilizing the transition state by increasing the free energy to be used and lowering the activation energy B. Releasing carbonic acid into the environment to stabilize the transition state and lowering the activation energy C. Reduce the activation energy by stabilizing the transition state and decreasing its free energy D.Supply heat to stabilize the reactants and...
Question 5: Assume that you make candy bars; the advertised weight of the candy bar is...
Question 5: Assume that you make candy bars; the advertised weight of the candy bar is 4.0 ounces with a standard deviation (sigma) of 2.35 oz. however your production manager thinks that this is not true; he thinks the candy bars are over-weight, they weigh more than 4.0 oz. To test his claim, you decided to randomly select a sample of 126 candy bars, the average weight (x-bar) is 4.5 oz. At an alpha (a) of 0.01 what do you...
1.) True or False? For all societies, resources are scarce, and technology is limited, while people’s...
1.) True or False? For all societies, resources are scarce, and technology is limited, while people’s wants and needs for goods and services seem to be unlimited. (2 points) 2.) (1 point) Adam Smith’s “invisible hand” refers to a.) the subtle and often hidden methods that businesses use to profit at consumers’ expense. b.) the ability of free markets to reach desirable outcomes, despite the self-interest of market participants. c.) the ability of government regulations to benefit consumers, even if...
1 In the absence of oxygen, cells consume glucose at a high, steady rate. When oxygen...
1 In the absence of oxygen, cells consume glucose at a high, steady rate. When oxygen is added, glucose consumption drops precipitously and is then maintained at the lower rate. Why is glucose consumed at a high rate in the absence of oxygen and at a low rate in its presence? 2 In the following diagram showing the distribution of thermal energy in a population of substrate molecules, the energy thresholds indicated by numbers represent ... Energy per molecule Number...
If the number of moles of an ideal gas in a firm container doubles while volume...
If the number of moles of an ideal gas in a firm container doubles while volume and temperature remain constant … a. pressure doubles b. pressure quadruple c. pressure remains constant d. pressure is reduced to half e. pressure is reduced to a quarter    a     b     c     d     e incorrect IncorrectQuestion 2 0 / 1 pts There are 3 balloons sitting next to each other, each of a different size. What is in the biggest...
**[70 pts]** You will be writing a (rather primitive) online store simulator. It will have these...
**[70 pts]** You will be writing a (rather primitive) online store simulator. It will have these classes: Product, Customer, and Store. All data members of each class should be marked as **private** (a leading underscore in the name). Since they're private, if you need to access them from outside the class, you should do so via get or set methods. Any get or set methods should be named per the usual convention ("get_" or "set_" followed by the name of...
1.   Which is not true about autoclaving? a. Autoclaving requires steam under pressure b. Autoclaving requires...
1.   Which is not true about autoclaving? a. Autoclaving requires steam under pressure b. Autoclaving requires maintaining steam at 121oC and 15 psi for 15 minutes c. It is an effective way to pasteurize milk and other liquids d. Steam must come in contact with the surface of the substance being sterilized 2.     We wished to determine the abundance of bacteria in a sample of milk. To do this ten-fold serial dilutions of a one milliliter milk sample were...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT