What is the density of a block of aluminum that has mass 27 grams of and a volume 10 cm3? 2.7 g/cm3 270 g/cm3 0.37 g/cm3 0.37 cm3/g

Hbr is mixed with water. which is the best description of what you would expect to find in the solution? 1. h2br+, oh1-, and water molecules 2. h3o +, br1-, and water molecules 3. hbr molecules and water molecules 4.

A compound has an empirical formula of C2H5. What is true about this empirical formula? A. It models the structure of the compound. B. It shows the ratio of elements in the compound. C. It gives the mass of each atom in the compound. D.

When aqueous solutions of lead (ii) nitrate (pb (no3) 2) and potassium phosphate (k3po4) are mixed, the products are solid lead (ii) phosphate and aqueous potassium nitrate. write the balanced chemical equation for this reaction.

When two atoms of the same element have different numbers of neutrons and therefore different atomic masses, what are they? a) isotopes b) isomers c) molecules

Determine the volume of 1.00 mole of a gas under the following conditions: T = 273 K, P = 2.00 atm: V = L T = 546 K, P = 1.00 atm: V = L T = 409.5 K, P = 1.50 atm: V = L

What element is in column 7A period 4? Select one: 0 a. Manganesse b. None of these are in that location c. lodine d. Bh - Element #107 e. Bromine

An element's atomic number is 60. How many electrons would an atom of this element have?

El vinagre es una suspensión?

How many liters of hydrogen gas are needed to react with cs2 to produce 2.50 l of ch4 at stp? 4h2 (g) + cs2 (l) → ch4 (g) + 2h2s (g) ?

Identify the missing numbers below to show the result of dividing the numbers 5.6 x 10^12 / 3.5 x 10^9 = A x 10^B