JACQUES D.

Chemistry

06/13/22

In the reaction between 97.49 grams of zinc and 2.53 moles of HCl, what is the maximum mass in grams of ZnCl2, 136.29 g/mol, produced? Report your answer with 2 decimal places.

zn(s) +2HCl(aq)-> H2(g)+ ZnCl2(aq)

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Physics

06/13/22

BRAINLIEST!!! how does the electric force between two charged particles change if the distance between them is reduced by a factor of 2?

a. its reduced by a factor of 2.b.. its reduced by a factor of 4.c. its increased by a factor of 2.d. it is increased by a factor of 4.

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Physics

06/13/22

physics - question

In a physics lab experiment, a spring clamped to the table shoots a 20 g ball horizontally. When the spring is compressed 18 cm , the ball travels horizontally 5.2 m and lands on the floor 1.6 m... more

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Statistics Probability

06/13/22

Estimating odds

Let's say a basketball player has a 55% chance to score more than 20 points in a game. Without any additional information, is there a way to best estimate the odds of that player scoring more than... more

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Chemistry

06/12/22

The decomposition of N2O5 in the gas phase is first order in N2O5. How long would it take for N2O5 to drop from 0.200 M to 0.025

The decomposition of N2O5 in the gas phase is first order in N2O5. If the concentration of N2O5 drops from 0.200 M to 0.100 M in 14.2 minutes, how long would it take for N2O5 to drop from 0.200 M... more

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Physics

06/12/22

An apartment has the dimensions 17 m by 9 m by 6 m. The temperature is 30°C, and the relative humidity is 55 percent. What is the total mass (in kg) of water vapor in the air in the apartment?

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Answers •2

Math Probability

06/11/22

Probability Question

Twenty elk live in a forest, and 7 were tagged and released. Some time later, 5 elk were randomly caught. Assume all 20 elk were equally likely to be caught. What is the probability that exactly 2... more

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Chemistry

06/11/22

Question 3 If 743 grams of salicylic acid (C7H6O3) reacts with 621 grams of acetic anhydride (C4H6O3), what is the maximum amount of aspirin (C9H8O4) product that can be produced?

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Calculus

06/11/22

Calculus II Homework Question I need the work shown not sure how my teacher is getting the answer.

Find the volume of the solid generated by revolving the region between the graph of y=x^2 and y=x+4 about the x-axis.

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Physics

06/09/22

Charges tend to move "downhill" in potential. "Yes" or "No".

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Answers •1

Math Calculus Mathematica

06/09/22

Integrate the following by using substitution rule.

Integrate (5x)/(sqrt(2x ^ 2 + 1)) dx from 1 to 2 by using the substitution rule.

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Answers •1

Calculus

06/09/22

Find the absolute maximum and minimum values of the function over the indicated interval, and indicate the x-values at which they occur.

Let f(x)=x3ーx2ーx+2, [-1,2] Find the absolute maximum and minimum values of f(x)over the indicated interval. Indicate the x-values at which they occur.

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Statistics

06/08/22

Statistic Probability

A roaming band of adventurers purchases potions from three guilds: 55% from guild 𝐺1G1, 30% from guild 𝐺2G2, and 15% from 𝐺3G3. Suppose 12% of the potions from guild 𝐺1G1 are cursed, 25% of potions... more

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Statistics

06/08/22

A candy manufacturer produces Halloween surprise bags by filling bags with 5 different surprises. How many different surprise bags can the company create if it stocks 14 different types of surprises?

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Answers •1

Chemistry

06/07/22

Vapor pressures of ethanol and 1 propanol at 35 C are 100 and 37.6. Calculate partial pressures of ethanol and 1-propanol at 35 C over ethanol in 1-propanol, where the mole fraction of ethanol is .3

its in ideal behavior

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Chemistry College Chemistry Rate Of Disappearance

06/07/22

Rate of Disappearance Help

Hydrogen sulfide burns in oxygen to form sulfur dioxide and water. If sulfur dioxide is being formed at a rate of 0.155579235977 mol L-1 s-1, what are the rates of disappearance of hydrogen sulfide... more

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Chemistry

06/07/22

In 30 cm3 solution of (CH3COOH) 0.15M are added solution of 60cm3 of a 0.075M NaOH.Calculate pH? Ka=1.77e-4

I'm having trouble with this exercise .I thought that's buffer solution, but doesn't work.I try to switch in hydrolysis of salts but I've no idea what to do.I need your help!

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Differential Equations

06/07/22

solve for differential equation all possible solutions.

dy/dt+t=2y

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Chemistry

06/06/22

When a sample of food is burned, it caused the temperature of the water in a calorimeter containing 1990. g of water to increase by 8.9oC.

I also want to know. What is the mass of the sample if it was 100% carbohydrate? (carbs =4.0 kcal/g)

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Answers •1

Chemistry

06/05/22

Calculate the mass of sodium acetate that must be added to 100 ml of a 0.15 M solution of chlorhydric acid to prepare a buffer with a pH value of 5.O? (Ka= 1.8 x 10^-5)

I am looking for the steps showing how to solve this problem. Thank you! :)

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Answers •1

Sat Math Linear Equations

06/04/22

SAT Math problem. Could anyone possibly solve this question?

Cara is hanging a poster that is 91 centimeters (cm) wide in her room. The center of the wall is 180 cm from the right end of the wall. If Cara hangs the poster so that the center of the poster is... more

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Chemistry

06/04/22

Balance the equation in acidic solution

MnO2-+ C2O4- ------ Mn2++ CO2

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Answers •1

Calculus Ap Calculus

06/03/22

3R) Please help!!

Use cylindrical coordinates to evaluate∫∫∫E (√x2+y2 ) (dV),where E is the region inside the cylinder (x − 1)2 + y2 = 1 and between the planes z = −1 and z = 1.

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Chemistry

06/03/22

Convert a speed of 675 cm/s to units of inches per minutes

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Answers •1

Probability

06/02/22

A die has six faces numberd 1-6. On a single roll of the die ,what is the probability of getting one of the numbers 1,2,3,4,5or6

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Answers •1

In the reaction between 97.49 grams of zinc and 2.53 moles of HCl, what is the maximum mass in grams of ZnCl2, 136.29 g/mol, produced? Report your answer with 2 decimal places.

BRAINLIEST!!! how does the electric force between two charged particles change if the distance between them is reduced by a factor of 2?

physics - question

Estimating odds

The decomposition of N2O5 in the gas phase is first order in N2O5. How long would it take for N2O5 to drop from 0.200 M to 0.025

An apartment has the dimensions 17 m by 9 m by 6 m. The temperature is 30°C, and the relative humidity is 55 percent. What is the total mass (in kg) of water vapor in the air in the apartment?

Probability Question

Question 3 If 743 grams of salicylic acid (C7H6O3) reacts with 621 grams of acetic anhydride (C4H6O3), what is the maximum amount of aspirin (C9H8O4) product that can be produced?

Calculus II Homework Question I need the work shown not sure how my teacher is getting the answer.

Charges tend to move "downhill" in potential. "Yes" or "No".

Integrate the following by using substitution rule.

Find the absolute maximum and minimum values of the function over the indicated interval, and indicate the x-values at which they occur.

Statistic Probability

A candy manufacturer produces Halloween surprise bags by filling bags with 5 different surprises. How many different surprise bags can the company create if it stocks 14 different types of surprises?

Vapor pressures of ethanol and 1 propanol at 35 C are 100 and 37.6. Calculate partial pressures of ethanol and 1-propanol at 35 C over ethanol in 1-propanol, where the mole fraction of ethanol is .3

Rate of Disappearance Help

In 30 cm3 solution of (CH3COOH) 0.15M are added solution of 60cm3 of a 0.075M NaOH.Calculate pH? Ka=1.77e-4

solve for differential equation all possible solutions.

When a sample of food is burned, it caused the temperature of the water in a calorimeter containing 1990. g of water to increase by 8.9oC.

Calculate the mass of sodium acetate that must be added to 100 ml of a 0.15 M solution of chlorhydric acid to prepare a buffer with a pH value of 5.O? (Ka= 1.8 x 10^-5)

SAT Math problem. Could anyone possibly solve this question?

Balance the equation in acidic solution

3R) Please help!!

Convert a speed of 675 cm/s to units of inches per minutes

A die has six faces numberd 1-6. On a single roll of the die ,what is the probability of getting one of the numbers 1,2,3,4,5or6

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JACQUES D.

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Emmersion

In the reaction between 97.49 grams of zinc and 2.53 moles of HCl, what is the maximum mass in grams of ZnCl2, 136.29 g/mol, produced? Report your answer with 2 decimal places.

BRAINLIEST!!! how does the electric force between two charged particles change if the distance between them is reduced by a factor of 2?

physics - question

Estimating odds

The decomposition of N2O5 in the gas phase is first order in N2O5. How long would it take for N2O5 to drop from 0.200 M to 0.025

An apartment has the dimensions 17 m by 9 m by 6 m. The temperature is 30°C, and the relative humidity is 55 percent. What is the total mass (in kg) of water vapor in the air in the apartment?

Probability Question

Question 3 If 743 grams of salicylic acid (C7H6O3) reacts with 621 grams of acetic anhydride (C4H6O3), what is the maximum amount of aspirin (C9H8O4) product that can be produced?

Calculus II Homework Question I need the work shown not sure how my teacher is getting the answer.

Charges tend to move "downhill" in potential. "Yes" or "No".

Integrate the following by using substitution rule.

Find the absolute maximum and minimum values of the function over the indicated​ interval, and indicate the​ x-values at which they occur.

Statistic Probability

A candy manufacturer produces Halloween surprise bags by filling bags with 5 different surprises. How many different surprise bags can the company create if it stocks 14 different types of surprises?

Vapor pressures of ethanol and 1 propanol at 35 C are 100 and 37.6. Calculate partial pressures of ethanol and 1-propanol at 35 C over ethanol in 1-propanol, where the mole fraction of ethanol is .3

Rate of Disappearance Help

In 30 cm3 solution of (CH3COOH) 0.15M are added solution of 60cm3 of a 0.075M NaOH.Calculate pH? Ka=1.77e-4

solve for differential equation all possible solutions.

When a sample of food is burned, it caused the temperature of the water in a calorimeter containing 1990. g of water to increase by 8.9oC.

Calculate the mass of sodium acetate that must be added to 100 ml of a 0.15 M solution of chlorhydric acid to prepare a buffer with a pH value of 5.O? (Ka= 1.8 x 10^-5)

SAT Math problem. Could anyone possibly solve this question?

Balance the equation in acidic solution

3R) Please help!!

Convert a speed of 675 cm/s to units of inches per minutes

A die has six faces numberd 1-6. On a single roll of the die ,what is the probability of getting one of the numbers 1,2,3,4,5or6

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

OR

JACQUES D.

Find the absolute maximum and minimum values of the function over the indicated interval, and indicate the x-values at which they occur.