The answer you're looking for is <u>D. Boiling points of various substances.</u> I got this answer because the independent variable is the thing in an experiment that is unaffected by any thing in the experiment, but has to be changed by the tester to find a change in the outcome of the dependent variable. It can't be A because depending on the temperature of the heated container must be different to reach the boiling point of different substances, for this reason, we also find out that D is the answer. I hope that this helps!
Hi there!
Neon (Ne) -- Atom. This is one, singular atom of neon. It is not connected to anything else.
Carbon Dioxide (CO₂) -- Compound. This is a molecule containing <u>at least</u> two different elements (Carbon and Oxygen)
Water (H₂O) -- Compound. See reason above. There are two different types of atoms in this molecule.
Hydrogen gas (H₂) -- Molecule. The reason that this is different, is because the whole structure is one type of element (Hydrogen).
As for the element option. The word "element" is used to define an atom with properties relating to another one. A Silicon atom, will react just like another Silicon atom.
Hope this helps!
Brady
Answer:
it is hard.. harder than some natural gems
Explanation:
Toss drained/rinsed/dried beans with a bit of olive oil (or avocado oil) and your favorite seasonings. You can add crushed whole seeds (coriander, cumin, fennel, mustard, etc.), woodsy herbs (thyme, oregano, rosemary, sage), red pepper flakes, crushed garlic cloves, and of course salt and pepper. follow me
Answer:
The molar mass (Mm) of the compound is 127.39 g/mole
Explanation:
ΔT = Kf. molality
ΔT = change in temperature = Tfinal - Tinitial = 2.8 - 5.5
Kf = freezing point depression constant = - 4.3 C/m (always negative because temperature is decreasing)
molality = moles of solute/Kg of solvent = mole (n)/(20 x 10^-3 Kg of benzene)
(2.8 - 5.5) = (-4.3) x molality
molality = 0.6279 mole/kg
0.6279 = mole of compound/(20 x 10^-3)
mole of compound = 0.01256 mole
mole (n) = mass (m) divided by Molar mass (Mm)
Molar mass = mass of compound / mole of compound
m/n = 1.6/0.01256 = 127.39 g/mole