Answer:
D working alone
Explanation:
Working alone is the only option that could potentially be a safety hazard; if you have no one watching your back, errors could occur, like dropping glass or burning your hand, and no one is around to help you.
Choices A, B, and C are not correct because those are all good safety standards.
Answer:
0.04506 mol
Explanation:
For this problem, you need to convert grams to moles. To do this, you need the molar mass, which is given. Divide the mass by the molar mass to find the moles you have.
(5.001 g)/(110.98 g/mol) = 0.04506 mol
Answer: Families of ions that contain NITROGEN, SULFUR, and CARBON follow a pattern similar to that of the polyatomic chlorine ions.
Explanation: Plato
Answer:
False
Explanation:
Elements in the last group are called Noble gases. They are found in group VIIIa or Group 18. They have a complete outer shell, or have 8 valence electrons (except for Helium (He) because it has 2), so they are basically stable. Stable atoms have very low reactivity, or they do not readily form any type of bonds because they already have a full outer shell or they do not need to accept or gain electrons to be stable.
Answer:
3.46
Explanation:
Hello,
This question can be solved using Henderson-Hasselbalch equation.
The dissociation equation of acetic acid in water is
CH₃COOH + H₂O ⇄ CH₃COO⁻ + H₃O⁺
pH = pKa + log([conjugate base] / [weak acid])
Conjugate base = acetic acid
Weak acid = water
pKa = 4.76
pH = 4.76 + log([0.05]/[1])
pH = 4.76 + log(0.05)
pH = 4.76 + (-1.30)
pH = 3.46
From the above solution, the pH of the solution is 3.46