Select the correct answer. What do scientists use to determine the temperature of a star?
OA.
thermometer
B.
distance from Earth
OC. composition
D.
color

A+b→2c when the reaction begins, the researcher records that the rate of reaction is such that 1 mole of a is consumed per minute. after making changes to the reaction, the researcher notes that 2 moles of a are consumed per minute. what change could the researcher have made to effect this change?

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

What can be found in the ionosphere