JACQUES D.

4d

r the following combustion reaction CH₃CWhen a 7.52-g sample of butyric acid (molar mass = 88.10 g/mol) is burned, how much energy (in kJ) is released as heat?

For the following combustion reaction CH₃CH₂CH₂COOH(l) + 5O₂(g) → 4CO₂(g) + 4H₂O(g) ∆H = -2.18 × 10³ kJ When a 7.52-g sample of butyric acid (molar mass = 88.10 g/mol) is burned, how much energy... more

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Chemistry

8d

Please help me with this question

Calculate the final temperature of the system: A 50.0 gram sample of water initially at 100 °C and a 100 gram sample initially at 22.4 °C are mixed. The specific heat of water is 4.184 J/gC).... more

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Answers •1

Physics

8d

A trio of 4Ω resistors are all connected in series to a 24 V battery, what is the total resistance of the circuit?

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Answers •1

Math Algebra 1 Algebra 2

10d

Find the area and perimeter of the figure determined by the points. (−7, 2), (−3, 1), (−2, 5)

Find the area and perimeter of the figure determined by the points. (−7, 2), (−3, 1), (−2, 5).

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Answers •3

Trigonometry

12d

A right triangle has side lengths 9, 40, and 41 as shown below. Use these lengths to find sinM, tanM, and cosM

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Answers •1

Physics

12d

Tension in strings

Find the tension in each of the three cables supporting the traffic light if it weighs 300 N (hint: both T1Y and T2Y, the "y" components of T1 and T1, need to equal the weight of the traffic light;... more

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Answers •1

Physics

12d

Non-uniform Circular motion

This object is rotating at non-uniform circular motion. Its centripetal acceleration is ac = 20 m/s2 and its tangential acceleration is at = 13 m/s2. What is the total acceleration?What is the... more

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Statistics

12d

SAT scores are distributed with a mean of 1,500 and a standard deviation of 300.

SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested in estimating the average SAT score of first year students at your college. If you would like to... more

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Physics

16d

Vectors in physics

Determine the resultant of two dispacement A and B where:A=(5i-2k)mB=(-3i+4j+6k)m

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Answers •1

Chemistry

17d

By titration, it is found that 35.1 mL of 0.148 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentration of the HCl solution.

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Answers •1

Physics

17d

According to the principle of superposition, displacement caused by combining two waves is equal to the

Larger wave Sum of the contributing waves Average of the contributing waves Equilibrium position

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Answers •1

Chemistry

18d

Can Crush by Air Pressure Experiment

If you put a can with water at its base over a hot plate and allow the water to heat. Once Steam is visible from the top of the can, and quickly flip the can upside down into a bowl of water with... more

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Answers •1

Algebra 2

18d

How to write polynomial equations based on the roots.

There are three questions.The first has the root 6-√7The second has the roots -2, 1+√7The third has the roots -6, 0, 3, -√5

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Answers •2

Chemistry

18d

What is the pH of a bleach solution that has a [OH−]=1.0×10−3 M?

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Answers •1

Chemistry

19d

calculate the new pressure if a 2.45L of a gas at a pressure of 1.01 atm is contracted to a volume of 2.29L

Best to use Boyle's gas law

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Answers •1

Calculus

19d

Defining the Derivative and Using Derivative Notation

Find the tangent and normal line for the function: at x= -2. Then graph the function and the tangent line. Be sure to show all work and correct notation!!

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Answers •1

Statistics

19d

Suppose that a single die with 17 sides (numbered 1,2,3,…,17) is rolled once. What is the probability of getting an even number?

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Answers •1

Statistics

21d

What is the probability that a randomly selected teacher makes less than $53,000 per year?

The average teachers' salary in a certain state is $57,337. Suppose that the distribution of salaries is normal with a standard deviation of $7500. Assume that the sample is taken from a large... more

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Calculus

21d

If the bacteria in a culture double in 4 hours, how many hours will it take before 3 times the original number is present?

It will take ? hours. (Answer should be accurate to within at least three digits.)

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Answers •1

Precalculus

22d

If csc(x)=6, for 90degrees.....

If csc(x)=6, for 90°<x<180°, then Sin(x/2)=cos(x/2)=tan(x/2)=

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Answers •1

Calculus

22d

Working the Chain Rule

I am again trying to help my daughter with her college homework that is over my head. Any help for the following problem is appreciated. Find the equation of the tangent line to the graph of... more

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Answers •1

Calculus

26d

differentiate f(x) =2In(2x+5)-tan^-1(2x^2)+pi^2

Calculus I find the differentiate.

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Answers •1

Statistics

26d

Probability dice roll

A fair 6-sided die is rolled three times. What is the probability that all three rolls are 1? Write your answer as a fraction or a decimal, rounded to four decimal places.

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Answers •1

Chemistry Biochemistry Organic Chemistry

26d

What is the reaction of Fe metal with ferric chloride?

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Answers •2

Math Algebra 2

27d

Math problem, help pls!

Suppose you want to have $300,000 for retirement in 35 years. Your account earns 4% interest. How much would you need to deposit in the account each month?

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Answers •1

r the following combustion reaction CH₃CWhen a 7.52-g sample of butyric acid (molar mass = 88.10 g/mol) is burned, how much energy (in kJ) is released as heat?

Please help me with this question

A trio of 4Ω resistors are all connected in series to a 24 V battery, what is the total resistance of the circuit?

Find the area and perimeter of the figure determined by the points. (−7, 2), (−3, 1), (−2, 5)

A right triangle has side lengths 9, 40, and 41 as shown below. Use these lengths to find sinM, tanM, and cosM

Tension in strings

Non-uniform Circular motion

SAT scores are distributed with a mean of 1,500 and a standard deviation of 300.

Vectors in physics

By titration, it is found that 35.1 mL of 0.148 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentration of the HCl solution.

According to the principle of superposition, displacement caused by combining two waves is equal to the

Can Crush by Air Pressure Experiment

How to write polynomial equations based on the roots.

What is the pH of a bleach solution that has a [OH−]=1.0×10−3 M?

calculate the new pressure if a 2.45L of a gas at a pressure of 1.01 atm is contracted to a volume of 2.29L

Defining the Derivative and Using Derivative Notation

Suppose that a single die with 17 sides (numbered 1,2,3,…,17) is rolled once. What is the probability of getting an even number?

What is the probability that a randomly selected teacher makes less than $53,000 per year?

If the bacteria in a culture double in 4 hours, how many hours will it take before 3 times the original number is present?

If csc(x)=6, for 90degrees.....

Working the Chain Rule

differentiate f(x) =2In(2x+5)-tan^-1(2x^2)+pi^2

Probability dice roll

What is the reaction of Fe metal with ferric chloride?

Math problem, help pls!

Still looking for help? Get the right answer, fast.

OR

JACQUES D.

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r the following combustion reaction CH₃CWhen a 7.52-g sample of butyric acid (molar mass = 88.10 g/mol) is burned, how much energy (in kJ) is released as heat?

Please help me with this question

A trio of 4Ω resistors are all connected in series to a 24 V battery, what is the total resistance of the circuit?

Find the area and perimeter of the figure determined by the points. (−7, 2)​, (−3, 1)​, (−2, 5)

A right triangle has side lengths 9, 40, and 41 as shown below. Use these lengths to find sinM, tanM, and cosM

Tension in strings

Non-uniform Circular motion

SAT scores are distributed with a mean of 1,500 and a standard deviation of 300.

Vectors in physics

By titration, it is found that 35.1 mL of 0.148 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentration of the HCl solution.

According to the principle of superposition, displacement caused by combining two waves is equal to the

Can Crush by Air Pressure Experiment

How to write polynomial equations based on the roots.

What is the pH of a bleach solution that has a [OH−]=1.0×10−3 M?

calculate the new pressure if a 2.45L of a gas at a pressure of 1.01 atm is contracted to a volume of 2.29L

Defining the Derivative and Using Derivative Notation

Suppose that a single die with 17 sides (numbered 1,2,3,…,17) is rolled once. What is the probability of getting an even number?

What is the probability that a randomly selected teacher makes less than $53,000 per year?

If the bacteria in a culture double in 4 hours, how many hours will it take before 3 times the original number is present?

If csc(x)=6, for 90degrees.....

Working the Chain Rule

differentiate f(x) =2In(2x+5)-tan^-1(2x^2)+pi^2

Probability dice roll

What is the reaction of Fe metal with ferric chloride?

Math problem, help pls!

Still looking for help? Get the right answer, fast.

OR

JACQUES D.

Find the area and perimeter of the figure determined by the points. (−7, 2), (−3, 1), (−2, 5)