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A first order reaction is 50% complete in 40 minutes. Calculate the time required for the completion of 90% of reaction. [Given : log 2 = 0.3010, log 10 = 1]
answered
Apr 24, 2024
Mathematics
high-school
1
vote
93.5k
views
What are two ways the brain can be manipulated
answered
Nov 14, 2023
Physics
high-school
3
votes
61.0k
views
Which of the following correctly describes a common ancestor?A) A sequence of DNA that codes for proteinsB) A species from which 2 or more recent species evolvedC) A species that is descended from a particular
answered
Oct 12, 2023
Biology
college
6
votes
154k
views
A bag contains 3 green marbles, 7 white marbles, and 5 red marbles (and no other marbles). One marble is chosen without looking. What is the complementary event to selecting a green marble?
answered
Sep 26, 2023
Mathematics
middle-school
5
votes
29.2k
views
A pineapple which was bought for $1.00 was sold at $1.30. calculate the profit percent
answered
Jul 9, 2023
Mathematics
college
2
votes
142k
views
How can u tell if an equation is a direct variation and if so identifyca constant variation
answered
May 23, 2023
Mathematics
college
5
votes
64.8k
views
What is the active volcanoes
answered
May 20, 2023
Physics
high-school
3
votes
103k
views
A = c/f B = e/d Given the relationship above, what is the ratio of A to B in terms of c, d, e, f? E. cf/ed F. ce/df G. cd/ef H. ef/cd
answered
Apr 23, 2023
Mathematics
college
3
votes
149k
views
Help me please ignore the other stuff im too lazy to crop it
answered
Jan 3, 2023
Mathematics
middle-school
6
votes
142k
views
Guys help me please I need the solution. Find x and y
answered
Dec 27, 2022
Mathematics
college
2
votes
49.0k
views
An operating lease has unequal payments over the lease term. During the first year, the payment is $14,000; total payments over the five-year lease term are $120,000. Based on the present value of the
answered
Nov 16, 2022
Business
college
3
votes
234k
views
Many students revised the sentence in the following way: “The boys shared the teeter-totter.” Complete the following statement to compare your revision to the model. My revised sentence
answered
Sep 13, 2022
English
high-school
2
votes
207k
views
What is the solution to the equation? a+5 2/3=9 1. a+5 2/3=9 a+5 2/3+5 2/3=9-5 2/3 a=3 1/3 2. a+5 2/3=9 a+5 2/3+5 2/3+=9+5 2/3 a=14 2/3 3. a+5 2/3=9 a+5 2/3-5 2/3=9+5 2/3 a=14 2/3 4. a+5 2/3=9 a+5 2/3-5
answered
Jul 27, 2022
Mathematics
high-school
5
votes
78.8k
views
Which statements describe band theory? Check all that apply. Electrons all have approximately the same energy. Electrons move among orbitals of different energies. Electrons move freely among atoms (delocalized
answered
Feb 10, 2022
Chemistry
high-school
9
votes
198k
views
Hello, can you please help me solve for the y intercept?
answered
Jan 18, 2022
Mathematics
high-school
6
votes
78.9k
views
A certain book had an original rating of 27 out of 30 points on a survey chart. Each month, the rating fell by 3 points. Express the number of points as a function of m, the number of months since the
answered
Jan 2, 2022
Mathematics
high-school
4
votes
67.6k
views
Geometry B Final Name Date Period Name the relationship. complementary, linear pair, vertical, adjacent, alternate interior, corresponding, or alternate exterior 1 2) 3) 4) 5) 6) 7) 8)
answered
Oct 21, 2021
Mathematics
college
6
votes
216k
views
How many molecules are in 1 mole of OsO4? Thanks!
answered
Oct 9, 2021
Chemistry
high-school
2
votes
161k
views
25% of the tickets sold at an amusement parks wear discount tickets in the park so it's 96 tickets and all how many discount tickets did it sell
answered
Oct 7, 2021
Mathematics
college
4
votes
217k
views
A big difference in normal climate patterns over a long amount of time is known as: Question 7 options: Ozone Weather Remote Sensing Climate Change
answered
Oct 6, 2021
Social Studies
middle-school
2
votes
198k
views
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