0.1m moles of solute particles are present in 1 L of each of the following aqueous solutions.
The number of moles of solute = mass of solute ÷ molar mass of solute, where mass is measured in grams and molar mass (defined as the mass of one mole of a substance in grams) is measured in g/mol
<h3>What is meant by moles of solute?</h3>
Molality is defined as moles of solute per kilogram of solvent. Molality = mass of solvent (in kg) moles of solute = molecular weight of solute × mass of solvent (in kg) mass of solute.
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Answer:
The exception in the order of the periodic table is;
B.) Cobalt is located before Nickel even though it has a higher average atomic mass
Explanation:
The Russian chemist Dmitri Mendeleev who formulated the periodic law, observed that the arrangement of the atoms in an order of their increasing atomic mass resulted in a table that show a recurring pattern in the properties of the elements within each group
However, cobalt (atomic mass 58.93 amu) which was heavier than nickel (atomic mass 58.71) was placed before nickel due to the similarities of its chemical properties to the group in which it was placed
It was later observed that cobalt with 27 protons was rightly placed to come before nickel that has 28 protons in the periodic table classified by atomic numbers which is the proton number.
I think its a covalent bond because carbon is positively charged and iron is positively charged too which makes the bond covalent. hope it helps
Answer:
C. The enthalpy of a reaction is the sum of the enthalpies of intermediate reactions.
Explanation:
The heat of any reaction ΔH∘f for a specific reaction is equal to the sum of the heats of reaction for any set of reactions which in sum are equivalent to the overall reaction.
Answer:
D (Decomposition)
Explanation:
This reaction is a decomposition reaction because one substance (NaNO3) is being separated into two substances (NaNO2 and O2). Alternatively, you could use the process of elimination. The reaction can't be single/double replacement because there's only one reactant, it can't be synthesis because substances are being broken down, not formed, and it can't be combustion because O2 is a product, not a reactant, and CO2 and H2O aren't being produced, as is common with combustion reactions.