Ascientist examining the periodic table sees that the element magnesium (mg) has the atomic number of 12.
based on this knowledge, what does the scientist immediately know is true about magnesium atoms?
magnesium atoms have 12 protons.
magnesium atoms have 6 protons and 6 electrons.
magnesium atoms have 12 neutrons.
magnesium atoms have 6 protons and 6 neutrons.

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg