<span>To a bystander, which property of a sound wave changes due to the Doppler? D. Frequency
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A heterogeneous mixture is not uniform in composition. Hence, option C is correct.
<h3>What is a heterogeneous mixture? </h3>
A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture.
This substance is not an element or compound, because different components could be observed in the substance.
A pure substance is made up of only one type of atom (element) or only one type of molecule (compound), mixtures and solutions are made from two or more types of pure substances.
For example, aluminium is an element and ammonia is a compound.
This substance is not a homogeneous mixture, because different samples of the substance appeared to have different proportions of the components.
Hence, this substance is a heterogeneous mixture.
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Answer: 6.02x10^22 atoms
Explanation: 1.4 grams is (1.4g/28 g/mole) = 0.05 moles of N2.
(0.05 moles)*(6.02x10^23 molecules/mole) = 3.01x10^22 molecules
(3.01x10^22 molecules)(2 atoms/molecule) = 6.02x10^22 atoms
The amount if protons is the same as the amount of electrons, so it would be 8. The charge is -2. Look at oxygen in the periodic table.
In order from the number of protons in its atomic nucleus