1 )- For a change to be a chemical reaction a new compound must be formed and chnage must be irreversible .
2 ) -- And air can't be classified as a pure substance because it's homogeneous mixture of many gases such as oxygen , nitrogen , carbon dioxide etc. While rest option are pure in nature
what must occur for a change to be a chemical reaction? tember - 5 October HW_2...
Not yet answered Graded out of 1.00 Flag question Question text In the process of photosynthesis, water and carbon dioxide are produced. Select one: True False Question 2 Not yet answered Graded out of 1.00 Flag question Question text In the carbon cycle, combustion produces atmospheric oxygen. Select one: True False Question 3 Not yet answered Graded out of 1.00 Flag question Question text In a balanced chemical equation, the number of each type of atom in the reactants must...
Question 27 To be classified as a capital expenditure the cost must do what? Not yet answered Marked out of 1.00 Select one: O a. involve long term repairs to an asset b. affect only a piece of machinery or equipment Flag question c. be directly related to a capital account O d. improve or better an existing plant asset Question 28 Which of the following is NOT a current asset? Not yet answered Marked out of 1.00 Select one:...
Question 17 A parent company must own how much of the subsidiary's common stock? Not yet answered Marked out of 1.00 P Flag question Select one: a. 0.15 b.0.25 OC. 0.75 O d. 0.5 Question 18 Since accounts receivable are usually collected within two month they are classified as: Not yet answered Marked out of 1.00 Select one: a. a fixed asset P Flag question O b. a cash asset c. a current asset d. a recurring asset Question 19...
Question 11 Not yet answered Marked out of 1.00 P Flag question The physiological needs for food, water, and air are called needs; Select one: O a. Secondary O b. Innate c. Acculturated O d. Psychogenic O e. Acquired Previous page Next page News forum
Question 18 When attempting to isolate a gene of interest, what is most commonly the first step? Not yet answered Points out of 1.00 Select one: a. gel electrophoresis b. enzyme digestion P Flag question c. DNA extraction d. protein purification e. PCR Question 19 What must a growth media contain? Not yet answered Points out of 1.00 Flag question Select one: a. a carbon source, such as glucose. b. sources of carbon, nitrogen, phosphorus, and various trace metals c....
O d. Black and tarry; bood Question 24 Not yet answered Chemical screenings tests performed on feces include all of the following except: Points out of Select one: 1.00 a. Clinitest P Flag question O b. Pilocarpine iontophoresis c. Quantitative fecal fats d. APT test O The term occult blood describes blood that Quection 25 Not yet answered Points out of 1.00 P Flag question Select ones a. produces a black tarry stool b. is not visibly apparent in the...
Question 11 In order to be classified as a long-term liability the debt must: Not yet answered Marked out of 1.00 Select one: a. become due/mature more than a year in the future Flag question b. become mature/due within six years c. become mature/due within 6 months O d. become mature/due at the end of the accounting period Question 12 If a company is assumed to continue trading normally for the foreseeable future it is a: Not yet answered Marked...
I need help please Question 6 Enzymes increase reaction rates by Not yet answered Points out of 1.00 P Flag question Select one: a decreasing the activation energy requirement. b. converting anabolic reactions into catabolic reactions. c. adding energy to the substrate molecules. O d. adding ATP to the reaction. e, slowly oxidizing the reactants. Question 7 What term refers to a loss in the native shape of an enzyme, often caused by a change in temperature or pH? Not...
Question 6 A seller that has the ability (to some degree) to control the price of the product it sells is called a price Not yet answered Points out of 1.00 P Flag question Select one: a. breaker O b. searcher o c. taker. O d. twister. Previous page MacBook Air
Question 17 Not yet answered Calculate the increase of entropy (in J/K) when 73 g of ice melts at 0 °C and 1 atm. (The heat of fusion for ice is 6,000 J/mol.) Marked out of 1.00 Answer: P Flag question Calculate the change in entropy (in J/K) when 98.2 g of water is heated from 28.7 °C to 76.7 °C at 1 atm. (The specific heat is 4.184 J/(g-K).) Question 18 Not yet answered Marked out of 1.00 Notice...