Answer:
Precipitation
Explanation:
Precipitation is when water falls from the clouds back to earth as rain, snow, or hail. The water returns to the rivers to continue the water cycle. So, the answer is D, precipitation.
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Answer:
Explanation:
The definition of acids and bases by Arrhenius Theory was modified and extended by Bronsted-Lowry.
Bronsted-Lowry defined acid as a molecule or ion which donates a proton while a base is a molecule or ions that accepts the proton. This definition can be extended to include acid -base titrations in non-aqueous solutions.
In this theory, the reaction of an acid with a base constitutes a transfer of a proton from the acid to the base.
From the given information:
From above:
We will see that HCN releases an H⁺ ion, thus it is a Bronsted-Lowry acid
accepts the H⁺ ion ,thus it is a Bronsted-Lowry base.
The formula of the reactant that acts as a proton donor is <u>HCN</u>
The formula of the reactant that acts as a proton acceptor is <u>H2O</u>
Answer:
2.02 × 10²³ atoms
Explanation:
Step 1: Calculate the moles corresponding to 37.8 g of cadmium
To convert mass to moles, we need a conversion factor: the molar mass. The molar mass of cadmium is 112.41 g/mol.
37.8 g × 1 mol/112.41 g = 0.336 mol
Step 2: Calculate the number of atoms in 0.336 moles of cadmium
To convert moles to atoms, we need a conversion factor: Avogadro's number. In 1 mole of atoms of cadmium, there are 6.02 × 10²³ atoms of cadmium.
0.336 mol × 6.02 × 10²³ atoms/1 mol = 2.02 × 10²³ atoms
A. A piece of Iron being heated until it melts
Because it goes from solid to liquid.
A physical change is changing from solid to a liquid, a liquid to a gas, a gas to a liquid, a liquid to a solid, a solid to a gas, or a gas to a solid.
The answer is hemoglobin. The substance which allows the red blood cells to carry oxygen and iron is called hemoglobin. It is a protein containing iron. Its main function is to carry oxygen to all the parts of the body.
