subject

Chemistry, 14.04.2021 01:00 anna8352

Which element is a halogen? A. chlorine (Cl)
B. oxygen (O)
C. carbon (C)
D. radon (Rn)

ansver

Answers: 3

Show answers

Another question on Chemistry

question

Chemistry, 22.06.2019 01:40

Which of these best describes an ionic bond?

Answers: 2

question

Chemistry, 22.06.2019 12:00

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

Answers: 1

question

Chemistry, 22.06.2019 20:00

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .

Answers: 3

question

Chemistry, 22.06.2019 22:30

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?

Answers: 1

You know the right answer?

Which element is a halogen? A. chlorine (Cl)
B. oxygen (O)
C. carbon (C)
D. radon...

Questions

question

Mathematics, 16.01.2021 16:50

Deborah bought a computer for 25% off the list price. If the list price is $2,428, how much did Deborah spend? A. $607 B. $1,821 C. $2,115 D. $2,403...

question

English, 16.01.2021 16:50

Anglo Saxons came from and to England as . They were pretty close to what we might think of as ....

question

Mathematics, 16.01.2021 16:50

Population density is the number of people per unit of area. The population density of a certain region is 50 people per square kilometer. If the regi...

question

Mathematics, 16.01.2021 16:50

The angle of the elevation from the top of a 95 Todd building into a hot air balloon in the sky and 76° if the horizontal distance between the buildin...

question

Mathematics, 16.01.2021 16:50

Lucy borrowed $425 from Colleen. Colleen charges Lucy 5.3% interest if Lucy pays Colleen back in 3 years how much does she pay Colleen back altogether...

question

Mathematics, 16.01.2021 16:50

6th grade students were asked what their favorite subject was. 56 students said that math was their favorite subject. If there are 160 6th grade stude...

question

Medicine, 16.01.2021 16:50

What information can investigators get from looking at the trajectory of a bullet? (Select 2) * Exact height of the perpetrator Approximate height of...

question

Mathematics, 16.01.2021 16:50

Liam and Harper are racing on a track. Liam runs 4 miles per hour and gets a 0.25 mile head start. Harper runs 0.5 miles per hour fastet than Lism. If...

question

Biology, 16.01.2021 16:50

Green plants use energy from the Sun to change carbon dioxide and water into food and oxygen. What clue tells you that this process is a chemical chan...

question

Physics, 16.01.2021 16:50

You slide a 15 kg box down a ramp with friction set to an angle of 38°. If the height of the ramp is 1.2 m, what's the frictional force on the box as...

question

Mathematics, 16.01.2021 16:50

There are 13 girls on Janelle's soccer team. Uniforms cost $32 each. Which equation uses estimation correctly to show about how much money the team sp...

question

Mathematics, 16.01.2021 16:50

Martin is laying out a design for the tiles on a section of his bathroom floor. He will use 1 black tile for every 4 white tiles to have total of 20 t...

question

English, 16.01.2021 16:50

Holden has just finished gathering notes for his research project on how steel is made. Describe what is his next step in preparing to write a report....

question

Mathematics, 16.01.2021 16:50

Marissa is going food shopping with her mother for a variety of items. In order to save money, they must decide which food is the best buy. $ 4.75 for...

question

Mathematics, 16.01.2021 16:50

The population of a town increases by 3.7% per year. If this year's population is 20,600, what will next year's population be, to the nearest individu...

question

Mathematics, 16.01.2021 16:50

Jason makes a fruit salad using only strawberries and blue berries. The ratio of strawberries to blueberries in Jason's fruit salad is 4 cups to 5 cup...

question

Mathematics, 16.01.2021 16:50

The area of a rectanglular television screen is 3456 in^2. The width of the screen is 24 inches longer thean the height what is the quadratic equation...

question

Mathematics, 16.01.2021 16:50

Lee read 1/6 of book on monday and another 1/3 of it on tuesday ,he took another 4 days to finish reading the book he read the same number of pages on...

question

Mathematics, 16.01.2021 16:50

A breakfast menu liste 3 eggs with 2 sausage for $4.15 or 4 eggs with 1 sausage for $4.30 . What is the cost of 1 egg, and what is the cost for 1 saus...

question

Mathematics, 16.01.2021 16:50

A House needs to some maintenance one sink is dripping water every 10 minutes and the other sink is dripping every 12 minutes if both sink dripped at...

More questions: Chemistry Another questions