# Issac

Popular questions and responses by Issac
1. ## chemistry

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

2. ## Mathematics

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

3. ## physics

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

4. ## social studies

what is the definition of canopy road

5. ## Calc

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)

6. ## half-life

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

7. ## Chemistry

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

8. ## Calc

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 23

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

10. ## Chemistry

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 are

11. ## physics

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.

12. ## Calc

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

13. ## writing

i am inthe 4th grade and need to write a composition. Can someone out there tell me what it is and give me an example.

14. ## math

3 times a number is

1. ## Math

whats the ineqaulity

posted on May 2, 2020
2. ## Social Studies

can someone help me pls

posted on April 16, 2020
3. ## Language arts

You guys are nope helping

posted on March 12, 2020
4. ## Science

yes

posted on September 19, 2019
5. ## Math

IN A CLASS OF 36 GIRLS,18 PLAY NET BALL , 16 PLAY TABLE TENNS WHILE 8 GIRLS PLAY NEITHER THE TWO GAMES. FIND THE NUMBER OF GIRLS WHO PLAY

posted on September 27, 2016

Marla

posted on February 22, 2016
7. ## math

234qt=

posted on September 16, 2015

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

posted on September 16, 2015
9. ## Chemistry

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?

posted on July 4, 2015
10. ## English

Write a paragraph with the following subject, occasion, audience, and purpose. Subject: food safety Occasion: aftermath of an outbreak of sickness at fast food restaurants due to tainted meat Audience: FDA (agency that manages food safety) Purpose:

posted on February 6, 2014
11. ## geography

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.

posted on November 13, 2012