Physics, 15.10.2019 02:00 haileysolis5
What number should be substituted for the question mark to balance the equation and why is that the correct number? 2c2h6 +? o2 → 4co2 + 6h2o + heat a. the number 5 is needed to balance the equation. the right side shows 4 oxygen atoms in carbon dioxide and 6 oxygen atoms in water for a total of 10 oxygen atoms. b. the number 3 is needed to balance the equation. the right side shows 6 oxygen atoms, so the left side needs 3 oxygen atoms. c. the number 7 is needed to balance the equation. the right side of the equation shows 14 oxygen atoms, so the left side needs 7 × o2. d. the number 4 is needed to balance the equation. the right side of the equation shows 8 oxygen atoms, so the left side needs 4 × o2.
Answers: 1
Physics, 22.06.2019 07:10
Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?
Answers: 2
Physics, 22.06.2019 11:00
Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?
Answers: 2
Physics, 22.06.2019 11:00
If a simple machine reduces the strength of a force, what must be increased?
Answers: 3
Physics, 22.06.2019 11:50
Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)
Answers: 2
What number should be substituted for the question mark to balance the equation and why is that the...
Mathematics, 09.03.2021 19:00
Mathematics, 09.03.2021 19:00
Mathematics, 09.03.2021 19:00
Biology, 09.03.2021 19:00
Geography, 09.03.2021 19:00
Chemistry, 09.03.2021 19:00
English, 09.03.2021 19:00
Mathematics, 09.03.2021 19:00
Mathematics, 09.03.2021 19:00
Mathematics, 09.03.2021 19:00