Questions tagged 'Chemistry'
452 questions
oxidation number of Carbon in Na2C2O4?
What is the oxidation number of carbon in sodium oxalate (Na2C2O4)? Additionally, could you explain the reasoning behind your answer?
A compound has a mass of 2.6632 × 102 g/mol. The number of significant figures in this mass is?
A compound has a molar mass of 2.6632 × 10² g/mol. How many significant figures are present in this measurement?
Dec 16, 2024
21.7% Carbon,9.6% Oxygen,68.7% Fluorine is what empirical formula?
What is the empirical formula for a compound that contains 21.7% carbon, 9.6% oxygen, and 68.7% fluorine?
how to express Calcium (periodic table) as an ionic symbol?
How do I express calcium from the periodic table as an ionic symbol? The instructions are a bit unclear: please write the symbol for the ion of calcium and express your answer in ionic form.
How many moles of cao form when 98.60 g caco3 decompose
How many moles of CaO are produced when 98.60 g of CaCO3 decomposes?
In the formula XF2, the element represented by x can be classified as…?
In the formula XF₂, the element represented by X can be classified as which of the following: Group 1 metal Group 2 metal Group 1 non-metal Group 2 non-metal Could someone please provide an...
Dec 14, 2024
Consider this reaction: 2b(s) + 3f2(g) 2bf3(g). which equilibrium expression is correct?
Consider the following chemical reaction: 2B(s) + 3F₂(g) ⇌ 2BF₃(g). What is the correct equilibrium expression for this reaction?
Dec 14, 2024
A gas mixture contains each of the following gases at the indicated partial pressures: N2, 315 torr; O2, 134 torr; and He, 219 torr?
A gas mixture contains the following gases at their respective partial pressures: nitrogen (N2) at 315 torr, oxygen (O2) at 134 torr, and helium (He) at 219 torr. What is the total pressure of this ga...
An auto mechanic spills 67 mL of 2.6 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 1.3 M NaHCO3 must be poured
An auto mechanic accidentally spills 67 mL of a 2.6 M H2SO4 (sulfuric acid) solution from a rebuilt auto battery. To ensure a safe and complete neutralization of the sulfuric acid spill, how many mill...
Dec 13, 2024
Formulas for cations and anions?
What are the chemical formulas for the following cations and anions: 1) Vanadium in the +5 oxidation state combined with carbonate (V^5+CO3^2-), and 2) Vanadium in the +4 oxidation state combined with...