02/16/23

College math problem, please help!
A jar contains 4 red marbles numbered 1 to 4 and 6 blue marbles numbered 1 to 6. A marble is drawn at random from the jar. Find the probability of the given event. Enter exact value. Do not... more
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02/16/23

College Algebra Math Problem, need help!
A test was given to a group of students. The grades and gender are summarized below A> B> C> Total> Male 2 16 7 25 Female 20 8 15 43 Total 22 24 22 68 If one student is chosen... more
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02/16/23

Please help me, I've been struggling on this college math
A bag contains 1 gold marbles, 9 silver marbles, and 28 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you... more
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02/16/23

The specific heat capacity of lead is 0.13 J/g oC. How much heat (in J) is required to raise the temperature of 12.6 g of lead from 28.3°C to 36.3°C? Keep three significant figures in your answer.

The specific heat capacity of lead is 0.13 J/g oC. How much heat (in J) is required to raise the temperature of 12.6 g of lead from 28.3°C to 36.3°C? Keep three significant figures in your answer. 
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02/16/23

Acid Identification

1. To identify an unknown diprotic acid, you dissolved 2.0 g of th e acid into 100 mL of water, titrated it with 0.2 M NaOH solution, and found the equivalence point after titrating 222.00 mL NaOH... more
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02/16/23

How many grams of sodium carbonate are present after the reaction is complete?
Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.80 gg of sodium carbonate is mixed with one... more
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02/15/23

Find the probabilities

(a) Assume that IQ scores are normally distributed, with a standard deviation of 15 points and a mean of 100 points. If 70 people are chosen at random, what is the probability that the sample mean... more
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02/11/23

What is the major organic product obtained from the following reaction?
What is the major organic product obtained from the following reaction?
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02/02/23

CH₃CH₂CH₂COOH(l) + 5O₂(g) → 4CO₂(g) + 4H₂O(g) ∆H = -2.18 × 10³ kJ When a 5.42-g sample of butyric acid (molar mass = 88.10 g/mol) is burned, how much energy (in kJ) is released as heat?
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02/02/23

What is the length in meters of 1.00 x 10^2 yards?
Required to show work mathematically.
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02/02/23

The environment had something to do with why organisms changed.
thd
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02/02/23

The listed contributions are some of the concepts that were developed in the history of the atomic theory. Arrange them in order from oldest to most recent.
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02/02/23

An adult person has a blood volume of about 5.2 x 10^3 mL. How many pints of blood is this?
Required to show work mathematically.
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02/02/23

Half life with rate order
The half-life for the zero order reaction A → Products is 276 s. What is the value of the rate constant for the reaction if the initial concentration of A is 0.725?
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02/01/23

Given m=log a, n= log b, and k= log ab
a. express a, b, and ab as powers of 10b. with knowledge of exponents what is the relationship among m, n, and kc. conclude that log (ab) = log a + log bJustify rules: a. log (a^r) = r log ab. log... more
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02/01/23

Find the change score that is 2.2 standard deviations below the mean. (Round your answer to one decimal place.)
One hundred teachers attended a seminar on mathematical problem-solving. The attitudes of a representative sample of 12 of teachers were measured before and after the seminar. A positive number for... more
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02/01/23

Using your data, explain a possible reason for the pH of the HCl solution that you made not matching the correct pH assuming you made no errors in creating the solution.  
We were given a pH of 2.9 and when we made the solution and took the pH of the solution we got a pH of 4.7.
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01/30/23

Organic Chemistry

Write a general reaction equation for sulphur containing compounds with sodium or potassium hydroxide by filling in the equation below. What is the name of the sulphur containing product that is... more
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11/15/22

How many grams of Nh3 are produced from the reaction of 6.14 g of H2
how many grams of Nh3 are produced from the reaction of 6.14 g of H2N2 + 3H2 -> 2NH3
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04/03/19

Next Step Tests
What are the best next step tests to get (1-5)? How would you rate them as the easiest and hardest?
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03/29/19

AMINO ACID MEMORIZATION TIP
Non polar, non aromatic: GAV LIMP (Gav has a limp) Polar: STNQC (stinky city) Positively charged: RKH (Rock House) Hope this helps. Didn’t come up with any ideas for the negatively... more
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