Issac

This page lists questions and answers that were posted by visitors named Issac.

Questions

The following questions were asked by visitors named Issac.

1. The half-life of a first-order reaction is 9.89 minutes. How many minutes will have elapsed after 27 half-lives? My answer is 267.03. 2. The half-life of a second-order reaction is 2.508 days. How many days will have elapsed after 8 half-lives? My answ...

18 years ago

1. A three-step mechanism has been suggested for the formation of carbonyl chloride: Step 1: Cl2 ===> 2 Cl (fast equlibrium) Step 2: Cl + CO ===> COCl (fast equilibrium) Step 3: COCl + Cl2 ===> COCl2 + Cl (slow) What is the molecularity of the rate-determ...

18 years ago

3 times a number is

15 years ago

what is the definition of canopy road

13 years ago

Find the point on the line –2x+2y–3=0 which is closest to the point (–4–4). Please provide solution. ( , ) Thanks guys!

11 years ago

A stunt car driver drives off an h = 6.7 m-high cliff into a lake with a horizontal speed of 14 m/s. The car needs to clear an 8.0 m-long ledge that is 5.0 m below the edge of the cliff. The car successfully misses the ledge on the way down. With what spe...

11 years ago

Assume that a particular crash test expert can withstand 18 times the acceleration due to gravity. Find the shortest distance over which her car can be brought to a stop from a speed of 78 km/h without the acceleration exceeding 18g.

11 years ago

If the 9th term of an A.P is five times the 5th term. Find the relationship between a and d?

10 years ago

These are all review questions for my summer assignment. Do not know: !) Explain what an ionic lattice is and include a diagram. 2)Draw a diagram to show how Na and CL2 combine to form NaCl Unsure: !)Select two compounds and explain when Roman numerals ar...

10 years ago

Express in simplest radical form. Do NOT give decimal approximations. 1. n^3/4 p^5/4 2. (3r)^2/5 s^3/5 3. (1/32)^0.2 4. 140^-1/2

9 years ago

Set up an exponential function to model each real world situation then use it to find the requested values. The half-life of Carbon 14 is about 5700 years. You begin with 800 grams of this isotope. 1) Function: 2) How much Carbon 14 is there after: a) 11,...

9 years ago

Set up an exponential function to model each real world situation. 1) A mosquito population doubles every 10 days. Two mosquitoes of the opposite sex begin the process. Function: 2 x 2^t/100 2) Given the current inflation rate (~3%), prices double every 2...

9 years ago

Why was the tert butyl chloride washed with aqueous sodium hydrogen carbonate? what gas was evolved during the washing? Write a balance equation

8 years ago

Every 6 months Melinda takes her vehicle in for its lubrication service. This service cost $29.95 each visit. Every 12 months, the vehicle requires a maintenance service that costs $89.98. During the maintenance service, the mechanic finds a problem with...

4 years ago

The biosphere contains several layers of Earth. Which layer is not included in the biosphere? A: Hydrosphere B: Mantle C: lithosphere D: atmosphere

4 years ago

A 20 year old college student starts a retirement savings account with a monthly contribution of $150 at an APR of 6% (compounded monthly). What will be the value of her retirement savings account after 45 years? Round your answer to the nearest cent. Som...

4 years ago

Answers

The following answers were posted by visitors named Issac.

I bet it does but if you have any kids youd know how hard it is so ill tell it. Rome's geography is important because it was surrounded by land and it was unable to be attacked by pirates but not to far from water.

12 years ago

For the diagram of NaCl (I didn't look at the second link if that would help me with this question, yet) would me drawing what Na and Cl look like in the arrangement of their atoms before and after they combine be good enough?

10 years ago

Will a 2-quart pitcher hold the entire recipe of citrus punch given at the right explain your reasoning