Answer:
B. The motorcyclist traveled southeast along a highway at 55 mph and reached the campsite in less than the two-hour estimated time.
Explanation:
<em>Velocity </em>is the rate at which an object changes position in a specific direction. It has both <em>magnitude and direction.</em>
Travelling <em>southeast</em> at <em>55 mph</em> is a <em>velocity</em>. It gives both speed and direction.
Statements A., B., and C. give the direction but not the speed.
Answer:
112 mL
Explanation:
The formula for percent by volume is
![\text{Percent by volume} = \dfrac{\text{Volume of solute}}{\text{Volume of solution}}\times 100 \, \%](https://tex.z-dn.net/?f=%5Ctext%7BPercent%20by%20volume%7D%20%3D%20%5Cdfrac%7B%5Ctext%7BVolume%20of%20solute%7D%7D%7B%5Ctext%7BVolume%20of%20solution%7D%7D%5Ctimes%20100%20%5C%2C%20%5C%25)
If you have 250 mL of a solution that is 44.8 % v/v,
![\begin{array}{rcl}44.8\, \% & = & \dfrac{\text{Volume of solute}}{\text{250 mL}}\times 100 \, \%\\\\44.8 \times \text{ 250 mL} & = & \text{Volume of solute} \times 100\\\text{Volume of solute} & = & \dfrac{44.8 \times 250\text{ mL}}{100}\\\\ & = & \textbf{112 mL}\\\end{array}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Brcl%7D44.8%5C%2C%20%5C%25%20%26%20%3D%20%26%20%5Cdfrac%7B%5Ctext%7BVolume%20of%20solute%7D%7D%7B%5Ctext%7B250%20mL%7D%7D%5Ctimes%20100%20%5C%2C%20%5C%25%5C%5C%5C%5C44.8%20%5Ctimes%20%5Ctext%7B%20250%20mL%7D%20%26%20%3D%20%26%20%5Ctext%7BVolume%20of%20solute%7D%20%5Ctimes%20100%5C%5C%5Ctext%7BVolume%20of%20solute%7D%20%26%20%3D%20%26%20%5Cdfrac%7B44.8%20%5Ctimes%20250%5Ctext%7B%20mL%7D%7D%7B100%7D%5C%5C%5C%5C%20%26%20%3D%20%26%20%5Ctextbf%7B112%20mL%7D%5C%5C%5Cend%7Barray%7D)
Answer:
A mutation is a heritable change in the genetic material of an individual. The change can be large or small. Large changes involve the loss, addition, duplication, or rearrangement of whole chromosomes or chromosome segments. Mutations can affect an organism by changing its physical characteristics (or phenotype) or it can impact the way DNA codes the genetic information (genotype). When mutations occur they can cause termination (death) of an organism or they can be partially lethal.
Explanation:
Isotope atoms mean, atoms with the same number of protons but different number of neutrons in their nuclei . The given oxygen atoms are isotopes meaning they have different number of neutrons in their nuclei . Oxygen 16 have 8 protons and 8 neutrons in its nucleus but Oxygen has 8 protons and 10 neutrons. That's what make them different.