Molecular Mass

The molecular mass of NaHSO4 (sodium hydrogen sulfate) is approximately 120.06 g/mol.

To calculate the number of moles in 2400g of CO2, we first need to determine the molar mass of CO2. The molar mass of CO2 is approximately 44.01 g/mol (12.01 g/mol for C + 2 x 16.00 g/mol for O). Then, we can use the formula: moles = mass / molar mass. Therefore, 2400g / 44.01 g/mol ≈ 54.5 moles of CO2.

The molecular mass of cytosine is approximately 111.1 grams per mole.

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The atomic mass of hydrogen is 1u. Atomic mass of bromine is 80u. Therefore, the molar mass of hydrogen bromide is 1+80=81u.

The empirical formula is CH2O. To find the molecular formula, you need to calculate the empirical formula weight (30 g/mol) and divide the molecular mass (180.0 g/mol) by the empirical formula weight to get 6. This means the molecular formula is (CH2O)6, which simplifies to C6H12O6, the molecular formula of glucose.

The molar mass of iron (III) oxide (Fe2O3) is approximately 159.69 g/mol. This is calculated by adding the atomic masses of two iron atoms and three oxygen atoms, which are 55.85 g/mol and 16.00 g/mol respectively.

One problem is that impurities in the water can affect the accuracy of the results. Additionally, water's freezing point is 0°C, which may limit the range of compounds that can be accurately measured using the freezing point depression method. Lastly, the specific heat capacity of water is relatively high, which can make it slower for the solution to reach thermal equilibrium.

There are 12 carbon atoms in one molecule of sugar (C12H22O11). Therefore, in 2 moles of sugar, there would be 12 * 2 * 2 = 48 moles of carbon. To convert moles to grams, you would multiply the number of moles by the molar mass of carbon (12 g/mol), so there would be 48 * 12 = 576 grams of carbon in 2 moles of sugar.

Molality =moles of solute/kilograms of solvent

Moles of solute =2

To find the number of moles of atoms in 150 g of sulfur, you need to first determine the molar mass of sulfur, which is about 32 g/mol. Then, you can use the formula moles = mass/molar mass. So, 150 g / 32 g/mol ≈ 4.69 moles of sulfur atoms.

Using the ideal gas law (PV = nRT), we can calculate the number of moles of air in the container. Rearranging the formula to solve for n (moles), we get n = (PV) / (RT). Plugging in the values (P = 1 atm, V = 3 L, R = 0.0821 Latm/molK, T = 293 K) and solving for n gives us approximately 0.12 moles of air.

Since potassium chloride has the formula KCl and the mass of the lost electron from neutral potassium is negligible compared with the mass of the protons and neutrons in the potassium atom nucleus, the molecular mass of potassium in this compound is the same as the atomic mass of potassium, 39.098.

molarity

The first step is to calculate the number of moles of the compound using the formula: moles = mass / molar mass. In this case, moles = 10 g / 100 g/mol = 0.1 moles. The molarity is then calculated by dividing the number of moles by the volume of solution in liters, so the molarity is 0.1 moles / 1 L = 0.1 M.

The density of nitrogen is 1,2504 g/L.
The density of air is 1,2922 g/L.
Both values are at 20 oC.

This is the general law of gases:
PV = nRT (n is the number of moles)

Calcium chloride with formula CaCl2 has molecular mass of 141. Commercial calcium chloride has formula CaCl2,2H2O.It's molecular mass is 177.

The gram atomic mass of silicon is 28 (to the nearest integer) and that of chlorine is 35.45. 6/28 = 0.214 and 2.5/35.45 = 0.0705. The closest integer ratio to this is 3 Si to 1 Cl for the group Si3Cl, the mass is 119. 378/119 = 3, to the nearest integer. Therefore, the molecular formula should be Cl3Si9.

The atomic mass of chlorine is 35.5. A chlorine molecule has two chlorine atoms. Therefore its molecular mass is 71u.

The molar mass of amoxicillin (C16H19N3O5S) is approximately 365.4 g/mol.

The molecular mass of myristic acid (C14H28O2) can be calculated by summing the atomic masses of each element in the chemical formula. The molar mass of carbon is about 12 grams per mole, hydrogen is about 1 gram per mole, and oxygen is about 16 grams per mole. Add these together based on the chemical formula to find the molecular mass of myristic acid to be approximately 228 grams per mole.

The gram molecular mass of hydrogen is 1 gram per mole.

You can use the ideal gas law formula: PV = nRT, where P is pressure, V is volume, n is moles, R is the gas constant, and T is temperature in Kelvin. Convert the temperature to Kelvin by adding 273.15 (141 + 273.15 = 414.15 K). Plug in the values: (7.77 ATM) V = (3.12 moles) (0.0821 LATM/molK) (414.15 K). Solve for V to find the volume of the gas.

To determine the number of representative particles in a sample of a molecular compound, you need to divide the given mass by its gram molecular mass, and then multiply by Avogadro's number (6.022 x 10^23 particles per mole). In this case, for 1.45 grams of a compound with a gram molecular mass of 237 grams, you would calculate (1.45 g / 237 g/mol) * 6.022 x 10^23 particles/mol to find the number of representative particles.