ATI TEAS Science

Correct Answer: B

Rationale: To find the molarity, we first need to calculate the moles of NaCl. Moles = mass / molar mass = 4.0g / (23.0g/mol + 35.5g/mol) = 0.056 moles. Next, we convert the volume to liters (120mL = 0.120L). Finally, molarity = moles / volume = 0.056 moles / 0.120L = 0.57 M (Choice B). Incorrect choices: A: 0.34 M - Incorrect calculation of moles or volume. C: 0.034 M - Incorrect calculation of moles or volume. D: 0.057 M - Incorrect conversion of volume to liters.

Correct Answer: C

Rationale: The correct answer is C: Retina. Visual processing begins in the retina because it contains specialized cells called photoreceptors (rods and cones) that convert light into electrical signals. These signals are then transmitted through the optic nerve to the brain for further processing. The cornea (A) is the transparent outer layer of the eye that helps focus light, the optic nerve (B) transmits signals from the retina to the brain, and the eyelid (D) is a protective covering for the eye and does not play a role in visual processing.

Correct Answer: B

Rationale: The correct answer is B (50%). When an A heterozygote (IAi) individual and an O (ii) individual have a child, the possible genotypes of the offspring are IAi (A blood type) and ii (O blood type). Since A and O blood types are determined by codominant and recessive alleles respectively, the child has a 50% chance of inheriting the A allele from the A heterozygote parent, resulting in A blood type. Therefore, the probability of the child having A blood type is 50%. Choice A (25%) is incorrect because it does not consider the possibility of the child inheriting the A allele from the A heterozygote parent. Choice C (75%) and choice D (100%) are incorrect as they overestimate the probability by not accounting for the presence of the O allele in the O parent, which would result in the child having O blood type.

Correct Answer: B

Rationale: To find the molarity, we first need to calculate the moles of NaCl. Moles = mass / molar mass = 4.0g / (23.0g/mol + 35.5g/mol) = 0.056 moles. Next, we convert the volume to liters (120mL = 0.120L). Finally, molarity = moles / volume = 0.056 moles / 0.120L = 0.57 M (Choice B). Incorrect choices: A: 0.34 M - Incorrect calculation of moles or volume. C: 0.034 M - Incorrect calculation of moles or volume. D: 0.057 M - Incorrect conversion of volume to liters.

Correct Answer: C

Rationale: Rationale: 1. According to Charles's Law, when pressure on a gas in a closed system at constant volume is increased, the temperature will also increase. 2. This is because the gas molecules will collide more frequently and with greater force, leading to an increase in kinetic energy and thus temperature. Summary: A: Incorrect - Temperature will not stay the same due to the direct relationship between pressure and temperature. B: Incorrect - Temperature will not decrease when pressure is increased in a closed system at constant volume. D: Incorrect - The relationship between pressure and temperature is known and can be determined.