22 grams, 5 x 3 x 1 = 15 / volume. mass (330) ÷ 15 (volume) = 22 grams (density)
Answer:
The number of oxygen in 7.9 × 10⁻¹ moles of CO₂ is 9.5116 × 10²³ atoms of oxygen
Explanation:
The given parameters are;
The number of moles of CO₂ = 7.9 × 10⁻¹ moles
The number of molecules of CO₂ in one mole of CO₂ = 6.02 × 10²³
The number of molecules, , of CO₂ in 7.9 × 10⁻¹ moles is given as follows;
= 7.9 × 10⁻¹ × 6.02 × 10²³ ≈ 4.76 × 10²³ molecules
The number of atoms of oxygen in one molecule of CO₂ = 2 oxygen atoms
Therefore;
The number of oxygen in 7.9 × 10⁻¹ moles of CO₂ = 2 × 4.76 × 10²³ ≈ 9.5116 × 10²³
The number of oxygen in 7.9 × 10⁻¹ moles of CO₂ ≈ 9.5116 × 10²³ atoms of oxygen.
The standard molar volume of a gas at STP is 22.4 L for 1 mole of gas at a temperature equal to 273.15 K and a pressure equal to 1.00 atm!
The question above wants to assess your ability to create a model to represent a scientific concept. In that case, I can't create the model for you, but I'll show you how to create that template.
First, you must choose one of the topics presented in the question. I suggest that you choose the topic "Conservation of Masses," because of its simplicity, however you should choose the one you are most familiar with.
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After that, you can create your template as follows:
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You can see examples of "Conservation of Masses," models in the attached figure.
More information:
brainly.com/question/22254694?referrer=searchResults
Answer:
d. Salts undergoes a chemical reaction with the particles of the solution and increase its conductivity
Explanation:
Salt compounds like potassium chloride (KCl) and sodium chloride (NaCl) mentioned in this question have the ability to disintegrate into their respective ions or charged atoms when dissolved in water. For example;
NaCl (aq) → Na+ + Cl-
However, these ions (Na+ and Cl-) are responsible for the ELECTRICAL CONDUCTIVITY of a solution. Hence, a salt compound when placed in an aqueous solution will form ions, which will conduct electricity. Hence, salinity of a solution increases its conductivity.
According to this question, salts undergoes a chemical reaction to with the particles of the solution to form ions that increase its conductivity.