The molecular formula of butan-2-one is C4H8O.

The molecular formula of butanoic acid is C4H8O2.

The molecular formula of formaldehyde is CH2O.

Glucose is a simple sugar with the molecular formula C6H12O6.

Glucose is a simple sugar with the molecular formula C6H12O6.

Momentum (p) = mass × velocity = 3 kg × 4 m/s = 12 kg·m/s.

Polyethylene is made from the polymerization of ethylene monomers.

The monomer of polystyrene is styrene, which polymerizes to form polystyrene.

Using the Nernst equation: E = E° - (0.0591/n) log([Zn²⁺]), where n=2.

The Nernst equation is E = E° - (RT/nF)lnQ, where E is the cell potential, E° is the standard potential, R is the gas constant, T is the temperature, n is the number of moles of electrons, and F is Faraday's constant.

The Nernst equation is used to determine the cell potential under non-standard conditions.

According to Newton's first law, if the object is moving with constant velocity, the net force is 0 N.

Normality (N) = n * molarity, where n = number of equivalents. For H2SO4, n = 2. Thus, N = 2 * 3 M = 6 N.

Molar mass of H2 = 2 g/mol. Number of moles = mass/molar mass = 10 g / 2 g/mol = 5 moles.

Molar mass of H2 = 2 g/mol. Number of moles = 10g/2g/mol = 5 moles.

Moles = Molarity x Volume (L) = 2 M x 0.250 L = 0.5 moles.

The molar mass of CO2 is 44 g/mol. Therefore, 44 g of CO2 corresponds to 1 mole.

Molar mass of CO2 = 12 + 16*2 = 44 g/mol. Number of moles = mass/molar mass = 44g/44g/mol = 1 mole.

Moles = Molarity x Volume (L) = 2 moles/L x 0.5 L = 1 mole.

In NaClO3, the oxidation state of chlorine is +5. Sodium is +1 and each oxygen is -2, leading to the equation: +1 + x + 3(-2) = 0, solving gives x = +5.

In K2Cr2O7, the total charge from potassium (K) is +2, and oxygen (O) contributes -14. Let the oxidation state of Cr be x. The equation is 2x - 14 + 2 = 0, solving gives x = +6.

In NH4+, nitrogen has an oxidation state of -3. Each hydrogen is +1, leading to the equation: x + 4(+1) = +1, solving gives x = -3.

In H3PO4, phosphorus has an oxidation state of +5.

In H2SO4, the oxidation state of sulfur is +6. Each hydrogen is +1 and each oxygen is -2, leading to the equation: 2(+1) + x + 4(-2) = 0, solving gives x = +6.

In H2SO4, the oxidation state of sulfur is +6.

The general solution is y = Ce^(4x). Using the initial condition y(0) = 2, we find C = 2, thus y = 2e^(4x).

Percentage by mass = (mass of solute / total mass) × 100 = (15 g / (15 g + 85 g)) × 100 = 17.65%.

Percentage concentration = (mass of solute / mass of solution) × 100 = (15 g / 150 g) × 100 = 10%

Percentage concentration = (mass of solute / mass of solution) × 100 = (20 g / 200 g) × 100 = 10%.

Argon is located in Period 3 of the periodic table.