It would be B. A polyatomic ion. Poly means many, while atomic refers to atoms more specifically the nature or category of these atoms is that they are non metallic ones, or basically nonmetal atoms. All of these nonmetallic atoms are joined together through covalent bonds and altogether they possess a unique charge. An example of a polyatomic ion would be sulphate or (SO4)^-3.
Answer: 2.67 moles of Phosphine are produced
Explanation:
From the equation 3H2 + P2 → 2PH3
3 moles of hydrogen (H2) = 2 moles of Phosphine (PH3)
4 moles of hydrogen = X moles of PH3
Then, cross multiply
X moles of Phosphine = (4 x 2) / 3
= 8 / 3
= 2.67 moles
Thus, 4 moles of hydrogen produces 2.67 moles of Phosphine
Answer:
139.5 mL.
Explanation:
To solve this question we will be making use of dilution law which is given by the equation below;
C1 × V1 = C2 × V2. Where C1 = the initial concentration, V1 = Initial volume, C2 = final concentration, V2 = Initial volume.
So, from the question we are given the following parameters; V1 = 186 mL, C1 = 0.275 M, C2 = 1.10 M and V2 = unknown (??).
Therefore, slotting in the above parameters into the dilution equation we have;
0.275 × 186= 1.10 × V2.
V2 = 0.275 × 186/ 1.10.
V2 = 46.5 mL.
The volume of solvent that has evaporated from the 0.275 M solution = 186 mL - 46.5 mL= 139.5 mL.
Answer:
C.because protons and electrons are equal they will be 38 so neutron will be 50
In Rutherford's gold foil experiment, some of those particles were deflected back towards him and off to the side. This told him that the protons and electrons were not evenly dispersed. However, the particles that did pass through did so because the protons are located in a concentrated area in the center of the atom, and the electrons are dispersed in the empty space around it. At least, that is what Rutherford determined
