Новый источник энергии получивший распространение в годы второй промышленной революции

1) нефть

2) ветер

3) вода

4) уголь

One mole of propane (44 grams) reacts with 5 moles of oxygen to produce 2220 kJ of heat. How many grams of propane would produce 6660 kJ of heat? A. 220 g B. 132 g C. 4440 g D. 49 g

If you were a scientist, why wouldn't you use "sour taste" to identify a compound as acidic?

Is this statement true or false? Atoms in liquids vibrate too much to stay in a fixed position.

Nonliving things have cells. True False

Given that oxygen has an atomic number of eight determine how many protons and neutrons are in the isotope 16O or oxygen - 16 8 protons and 9 neutrons 8 protons and 8 neutrons 8 protons and 7 neutrons 16 protons and 0 neutrons

Write the name and formula of the compound made of magnesium and fluorine

How was or wasn't the scientific method followed in this experment

1‑propanol (nn ‑propanol) and 2‑propanol (isopropanol) form ideal solutions in all proportions. Calculate the partial pressure and the mole fraction (yy) of the vapor phase of each component in equilibrium with each of the given solutions at 25 °C.

4. suppose you are setting up a reaction that requires an iodide salt and are planning to use sodium iodide. however, at the last minute you find that you are out of sodium iodide, so you must use potassium iodide instead.

The Large Hadron Collider is a particle accelerator that may be able to provide insight into the most fundamental structure of matter. It is 27 km long.