Question

Answer the following. Answers only MULTIPLE CHOICE. Choose the one alternative that best completes the statement...

Answer the following. Answers only
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A physical change A
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A physical change A) occurs when propane is burned for heat. B) occurs when iron rusts. C) occurs when glucose is converted into energy within your cells. D) occurs when water is evaporated. E) occurs when sugar is heated into caramel 23 2) A chemical change A) occurs when methane gas is burned. B) occurs when salt is dissolved in water, C) occurs when paper is shredded. D) occurs when powdered lemonade is stirred into water. E) occurs when water is vaporized. 3) 3) How many grams of Li3N can be formed from 1.75 moles of Li? Assume an excess of nitrogen. 6 Li(s)+N2(g) - 2 Li3N(s) A) 61.0 g LigN B) 20.3 g LizN C) 58.3 g LigN D) 18.3 g LigN E) 15.1 g LizN 4) A 12.39 g sample of phosphorus reacts with 42.54 g of chlorine to form only phosphorus trichloride (PC13). If it is the only product, what mass of PClz is formed? A) 79.718 B) 91.868 C) 30.15 g D) 140.018 E) 54.93 g TRUE FALSE. Write T' if the statement is true and F if the statement is false. 5) Given the recipe: 2 cups flour +1 egg +3 oz blueberries -- 4 muffins. You can make 1 dozen muffins from 3 eggs. 5) 6) Stoichiometry is a chemist's version of following a recipe. 6) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 7) According to the following balanced reaction, how many moles of NO are formed from 8.44 7 ) moles of NO2 if there is plenty of water present? 3 NO2(g)+H2O(1) -- 2 HNO3(aq) + NO(g) A) 25.32 moles NO B) 8.44 moles NO C) 5.63 moles NO D) 2.82 moles NO E) 12.66 moles NO
0 0
Add a comment Improve this question
Answer #1

Sign Up to Unlock the answer FREE

Already have an account? Log in

1) D. water is evaporated

2) A. Methane gas is burned

3) Moles of Li3N = 1/3 * moles of Li = 1/3 * 1.75 = 0.583

Mass = moles * molar mass = 0.583 * 35 = 20.40 g which is B. 20.30 g

4) Moles of p = mass / molar mass = 12.39 / 31 = 0.40 moles

Moles of Cl2 = mass / molar mass = 42.54 / 71 = 0.60 moles

Now moles of PCl3 = moles of P = 0.40 moles

Mass = moles * molar mass = 0.40 * (31 + 3*35.5) = 55 g which is E)

5. True

6. True

7. moles of NO = 1/3 * moles of NO2 = 1 / 3 * 8.44 = 2.82 moles - D)

Add a comment
Know the answer?
Add Answer to:
Answer the following. Answers only MULTIPLE CHOICE. Choose the one alternative that best completes the statement...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Answer the following. Answers only MULTIPLE CHOICE. Choose the one alternative that best completes the statement...

    Answer the following. Answers only MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A physical change A) occurs when propane is burned for heat. B) occurs when iron rusts. C) occurs when glucose is converted into energy within your cells. D) occurs when water is evaporated. E) occurs when sugar is heated into caramel 23 2) A chemical change A) occurs when methane gas is burned. B) occurs when salt is dissolved...

  • Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the...

    Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...

  • MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 21)...

    MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 21) 21) "Demand-pull inflation" refers to A) any inflation that is originally caused by a rightward shift of the AD curve but is maintained at a constant level by monetary validation. B) only the inflation that results from an expansionary monetary policy. C) any inflation that is originally caused by a rightward shift of the AD curve but is accelerating due to monetary validation. D)...

  • MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)...

    MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) When 1-pentanol is heated with HCI/ZnCl2, 1-chloropentane is the major product. This is an reaction, and is also produced as product. A) SN2, H2 B) SN2, H20 C) SNI, H2 D) SN1, H20 E) E2, H2 1) 2) What metal do Grignard reagents contain? A) pallium B) magnesium C) copper D) lithium E) ruthenium 3) What is the product of the following reaction? 3)...

  • MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)...

    MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What is the corect equilibrium constant expression for the following reaction? coag) + 2H2o@ ilag) + 202(g) b PCH, Po, b. K. d. e. none of the above 2) Use the equilibrium constants for the following reactions K1 -2.4 x 100 K2 24 x 1012 to determine the equilibrium constant for the reaction below. d 1.7 x 10 43 b. 1.0× 10-18 c5.8 x1018...

  • EXTRA CREDIT B MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers...

    EXTRA CREDIT B MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The concentration of ozone in a sample of air that has a partial pressure of Oz of 0.53 torr and a total pressure of air of 695 torr is A) 0.076 B) 0.76 C) 1.3 10- 3 D ) 7.6 102 E) 1.3 - ppm. 2) Why does the upper atmosphere contain only very little dissociated nitrogen? A) Nitrogen atoms are...

  • MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. I)...

    MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. I) Nucleic acids are polymers of nucleotides. Which of the following correctly represents 1)_ a nucleotide that may be found in nucleic acids? NH2 он A) I and IV B) III C) II D) I, II, and II E) I 8) The genetic code is said to be "degenerate". What does this term indicate about the genetic code? A) The genetic code contains regions of...

  • MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Metabolism...

    MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Metabolism and Cellular Respiration Refer to Figure below as a guide to answer the folloaing questions Acetyt CoA Oxaloacetic acid CoA NADH Citric acid NAD Isocitric acid Malic acid Fumaric acid NAD co NADH -FADH FAD+ a-Ketoglutaric acid Succinic acid CO2NAD ATP Succinyl CoA ADP P NADH Figure above. Starting with citric acid and ending with oxaloacetic acid, how many ATP 6) Refer to molecules...

  • Name MULTIPLE CHOICE. Choose the one als HOICL Choose the one alternative that best completes the...

    Name MULTIPLE CHOICE. Choose the one als HOICL Choose the one alternative that best completes the statement or answer the questio 1) A reaction in which a substance reacts with oxygen, emitting heat and forming oxygen-containing compounds is an example of an): A) combustion reaction B) gas evolution reaction C) precipitation reaction. D) acid-base reaction E) none of the above 2) What are the coefficients for the following reaction when it is properly balanced? _HCl+_Mg _MgCl2+_H2 A) 1.2.1/21 B) 2,1,2,2...

  • MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)...

    MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The maximum current in a JFET is defined as loss and occurs when VGS is equal to 1) A) zero Volts B) pinch-off voltage C) a voltage greater than the pinch-off voltage D) a small positive voltage of the FET and are unaffected by the network in which 2) 2) Schokley's equation defines the the device is employed. A) transfer characteristics C) drain characteristics...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT