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Problem: If 68 g of Zn reacts with 27.5 g of HCl. Use the chemical equation to answer the following questions below.
Zn + 2HCl -> ZnC*l_{2} + H_{2}
1. What is the molar mass of Zn?
2. What is the molar mass of HCI?
3. What coefficient is indicated in HCI?
4. Which substance is limiting reactant?
5. Which substance is excess reactant?
6. What is the molar mass of ZnCl_{2} ?
You are given an array of N non-negative integers: A1, A2, ..., AN. An alternating subsequence is a subsequence in which the indices of any two consecutive elements differ by exactly two in the original array. That is, if Ai1, Ai2, ..., Aik is some subsequence, then for it to be an alternating subsequence, (i2 - i1 = 2), (i3 - i2 = 2), and so on should all hold true. Among all alternating subsequences, find the one which has maximum sum of elements, and output that sum.
Using the t-table, give the confidence coefficients for each of the following:
1. n = 12, 95% confidence
2. n = 15, 95% confidence
3. n = 21, 99% confidence
4. n = 23, 95% confidence
5. n = 25, 99% confidence
from what alkene reactant might 3-methyl-3-pentanol be made?
Answer all the questions
1. Consider the general demand function: Qd = 3000 - 10P + 0.06M + 20Pr where Qd quantity demanded, P is price, M is money income and Pr is price of related goods.
i) Derive the equation for the demand function when A=$50,000 and Pr=$250
ii) Interpret the intercept and slope parameters of the demand function derived in part (i).
iii) Using the demand function in part (i) , calculate quantity demanded when the price of the good is $10.
(iv) Derive the inverse of the demand function in part (i). Using the inverse demand function calculate the demand price for 100 units of the good.
Dindy of mass 48 kg wears heels with an area of 2 cm² in contact with ground. Calculate the
pressure exerted by the girl on the ground.
A copper wire is 2.50 m long and has a diameter of 2.5 mm. How much current will it draw when connected to a 3.0 V source?
What is the mass of a lead sphere whose diameter is 0.50 m given density of steel is 7800 kg/m3 ?
How many aluminum atoms are in 4.22 g of aluminum?
Write a program to compute the value of 1500+1000-450*10+300÷5
