Question 9 (8 points) Saved Please consider the following chemical reactions that catalyzes the destruction of...
Question 9 (10 points) Consider the following EBNF grammar for a “Calculator Language": <calculation> → <expr>= <expr> <term> (+1-) <expr> <term> <term> <factor> (* ) <term> <factor> <factor> → (<expr>) <value> <value> → [<sign> ] <unsigned> [. <unsigned> ] <unsigned> <digit> { <digit> } <digit> → 01|2|3|4|567| 8 | 9 <sign> → +|- which of the following sentences is in the language generated by this grammar ? Why? a. 3/+2.5 = b. 5-*3/4= c. (3/-2) + 3 = d. 5...
0.14 Question 8 (3 points) Saved Classify the following chemical reaction as a combination, decomposition, single-replacement, double-replacement, or combustion reaction: 2 C2H6 + 7 02- 4 CO2 + 6H20. double-replacement single-replacement decomposition combustion Saved Question 9 (3 points)
URGENT PLEASE Question 8 (5 points) Consider the following information to answer the questions: [5T] The mechanism for the destruction of ozone in the upper atmosphere: Step 1 (slow) 03(g) + NO(g) → NO2(g) + O2(g) Step 2 (fast) N02(g) + 0 (9) NO(g) + O2(g) -> 20-öröt N-Ö: => +0=0 We were unable to transcribe this image
+4 OD) +3 Question 25 (2 points) What is the chemical formula for the following Lewis structure? 1:ローバーバー: CI: :CI: Submit Quiz 23 of 25 questions saved ODS O E) Ar Question 9 (2 points) --------are negatively charged ions that have electrons than protons. OA) Cations; less OB) Cations; more OC) Anions; more OD) Anions; less Question 10 (2 points) Saved The molecule below is a polar molecule. H-C= C-C1 True False
3. Consider the following BNF for arithmetic expressions: <expression> ::= <term> <term>+ <expression> | <term> - <expression> <term> ::= <factor> | <factor> * <term> | <factor> I <term> <factor> ::= <constant> (<expression>) <constant ::= 0|1|2|3|4|5|6789 a) Show the expression tree of the following expression: 8/7*5/6-6/4/2-7*(5+2). b) Give the value of this expression. c) Same question as (a), if the BNF were <expression> ::= <term> | <expression>+ <term> | <expression> - <term> <term> ::= <factor> | <term>*<factor> | <term> / <factor>...
7 8 9 10 Save gend Saved Response Question 2 (5 points) Unsaved Response ) //Info Item Select the molecule with the highest gas-phase absolute entropy at 25°C. O a) CH O d) H2 Save Question 3 (5 points) From the following, select the reaction in which entropy increases. Assume a common temperature. Quiz Status Question 1 Saved i) a) 2NO2(g)-N2O4(g)
Suppose the probability of selling a white car to a buyer older than 50 is.8 and it is .4 if the buyer is younger than 50. Suppose half of all customers are older than 50. (a) What is the probability of an arbitrary customer purchasing a white car? (b) Suppose 10 customers are currently in the showroom. What are the mean number of white cars purchased and what is the variance (c) LetXthe number white cars purchased by the 10...
This question is from the subject: Database Systems QUESTION 8 Consider the relation R(A,B,C,D,E,F) with FDs A -> C,B->D, C-> E, D -> F. Consider the BCNF status of R. Which of the following could be correct given the information above? 1. Ris in BCNF already. 2. Ris not in BCNF. It must be divided into R1(A,C,E) with FDs A->C, C-> E, and R2(B,D,F) with FDs B -> D, D -> F. 3. R is not in BCNF. It must...
Question 9 Consider the following mechanism: 1. Clo (aq) + H20(1) <=> HClo(aq) + OH (aq) FAST 2. 1(aq) + HClO(aq) => HIO(aq) + Cl (aq) SLOW 3. OH"(aq) + HIO(aq) => H2O(l) + 10 (aq) FAST What is the role of HIO? Selected Answer: C. reactant Correct Answer: D. intermediate
Question 3 (2 points) Saved Br 7 8 9 NO 2 10 Choose the expected product. Choose ALL that apply. Br No2 OH NO2 NO2 NO2