Question 39 2 pts How many mL of 0.583 M HNO3 are needed to react with 2.5 g of Hg2Cl2 (molar mass = 472.08 g/mol)? Hg2Cl2 +5HNO3 +2Hg(NO3)2(aq) + HNO2(aq) + 2HCl(aq) + H2O(1)
A reaction occurs that is first order with respect to A. If [A]o is 3.5 M and k = 2.5 x 10-3 s-1, what is [A]t when t = 100 s? A. 4.28 M B. 2.73 M C. 5.67 M D. 3.52 M
If you have a stock culture of bacteria at a concentration of 5*10 cells/ml, how much stock cuiture and how much media would you add to obtain a final concentration of 2.5*10 cells/ml in a final volume of 20mL? (1 point)
1. Exactly one teaspoon of granulated sugar is 4.2 grams. The molecular formula of sugar (sucrose) is C12H22011. How many atoms are in 2.5 teaspoons of sugar? 2. You have 2.0 moles of phosphorus pentachloride. How many molecules is that? How many atoms is that?
QUESTION 3 х A population has a probability distribution as follows. P(x) 0.2 2 0.5 3 1 0.3 A sample of 2 is drawn and its mean, X, calculated. Find the probability X = 2.5 Round off to three decimal places
Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals). Use Table 1 in Appendix B. P(z -1.0) P(z -1.0) P(z -1.5) P(z -2.5) P(-3 < z 0)
The one-hr unit hydrograph is given in the table. Determine the 2-hr unit hydrograph. Use the given table. The last column of your data count as your final answer 1-hr time UH (hr) (cfs) 0.5 1.5 2.5 3.5
1.A certain FM transmitter has a resting frequency of 200 KHz, a maximum frequency of 202.5 KHz, and a minimum frequency of 197.5 KHz. An information signal of 3 Vpk, 2.5 KHz is driving the modulator. What is the deviation of the transmitter?What is the deviation rate for the transmitter
Suppose today is March 27, 2018, and your firm produces breakfast cereal and needs 85,000 bushels of corn in May 2018 for an upcoming promotion. You would like to lock in your costs today because you are concerned that corn prices might go up between now and May. Use Table 25.2 a. What is the total price are you locking...
help with 10 and 11 please
DATA AND CALCULATIONS Reaction 1 (Mgo) 100 g 27.7 1. Mass of 1.00 MHCI 2. Final temperature, 3. Initial temperature, 4. Change in temperature, at 5. Mass of solid °C °C Reaction 2 (Mig) 0.50 40.2 19.6 20.6 0.508 0 "C 1.0009 6. Heat, 3.39 8.61 7. AH -3. 39 -8.61 8. Moles 100g/40...