subject

Chemistry, 05.04.2021 19:00 madison1284

In a coffee-cup calorimeter, 100.0 g of H2O and 8.70 grams of Na3PO4 are added. The water had an initial temperature of 24.6 oC. After the dissolution of the sodium phosphate the temperature changed to 31.3 oC. -Was the dissolution exothermic or endothermic? Explain.

-Calculate how much heat the water lost or gained.

ansver

Answers: 1

Show answers

Another question on Chemistry

question

Chemistry, 22.06.2019 00:30

Asolution of sodium hydroxide was titrated against a solution of sulfuric acid. how many moles of sodium hydroxide would react with 1 mole of sulfuric acid?

Answers: 2

question

Chemistry, 22.06.2019 13:30

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion

Answers: 3

question

Chemistry, 22.06.2019 13:30

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

Answers: 3

question

Chemistry, 23.06.2019 01:00

What is the chemical name of the compound ti2o3? use the list of polyatomic ions and the periodic table to you answer.

Answers: 1

You know the right answer?

In a coffee-cup calorimeter, 100.0 g of H2O and 8.70 grams of Na3PO4 are added. The water had an ini...

Questions

question

History, 15.12.2020 22:40

Which of the following cities contained a military installation? Greensboro Robins Field Columbus All of the above...

question

Mathematics, 15.12.2020 22:40

Dwayne got a raise, and his hourly wage increased from $12 to $15. What is the percent of change? 20% increase 25% increase 20% decrease

question

Health, 15.12.2020 22:40

10. Which phrase best describes advertising? (1 point) O buying a product based on its name O researching to learn about a competitor's product...

question

English, 15.12.2020 22:40

Ozymandias by Percy Bysshe Shelley I met a traveller from an antique land Who said: Two vast and trunkless legs of stone Stand in t...

question

Mathematics, 15.12.2020 22:40

Help please!! A standard HDTV screen with a width of 152 inches has a height of 85.5 inches. What is the ratio of width to height of the HDTV.

question

Mathematics, 15.12.2020 22:40

PLZ ANSWER ASAP WILL MAKE BRAINLIEST FOR BEST ANSWER AND EXPLAIN YOUR ANSWER Three friends participated in a fund-raising project. Dexter collected 2...

question

Mathematics, 15.12.2020 22:40

Two linear functions are described below. Function f(x) has the equation f(x)=3x−4. Function g(x) has the table of values shown below.

question

English, 15.12.2020 22:40

9. Part B: Which part of the excerpt most clearly supports the answer to Part A? a. “There is no way for me to tell... what it will be for each of yo...

question

Mathematics, 15.12.2020 22:40

Which is an equation of a line that has a slope of 4/5 and passes through the point 4,3...

question

History, 15.12.2020 22:40

After Benito Mussolini became the dictator of Italy, he became involved with another nation's civil war. Name the country...

question

Mathematics, 15.12.2020 22:40

question

Mathematics, 15.12.2020 22:40

Identify the type of arc....

question

Mathematics, 15.12.2020 22:40

Please help me solve these 3 problems. Solve for x state the properties used and check your answer. I’ll mark as brainliest. a) 5(x - 2) - 6 = 24

question

Biology, 15.12.2020 22:40

Which type of mutation does not change the amino acids produced?...

question

Health, 15.12.2020 22:40

Which of the following BEST describes varicose veins? A. Veins cannot prevent the backflow of blood. B. Veins lose the ability to transport bl...

question

SAT, 15.12.2020 22:40

A mixed cereal contains 150 g of rice, 300 g of wheat, and 400 g of oats. Write the ratio in decimal form to compare the types of grains in the cereal...

question

English, 15.12.2020 22:40

Why is Katsuki Bakugou the PERFECT husbando?

question

Mathematics, 15.12.2020 22:40

A change purse contains 3 dimes and 6 quarters. A coin is drawn at random and is not replaced. Then another coin is drawn at random. Find each probab...

question

Mathematics, 15.12.2020 22:40

Belinda's Bakery profits $8.00 off of each box of a dozen cookies. Belinda would like to profit at least $304 per day off of the cookies....

question

Mathematics, 15.12.2020 22:40

What is the additive inverse of the expression below, where a and b are real numbers? 2 a + b -1 0 2 a minus b Negative 2 a minus b...

More questions: Chemistry Another questions

Questions on the website: 13722367