What does a transformer do?

a) changes the voltage of electricity leaving a power plant

b) changes the temperature of steam in a power plant

c) cools the water in a nuclear reactor

An average microwave uses a frequency of 2.54 GHz. How much energy is emitted?

Which of the following isotopes is most useful for dating plant and animal remains? A. potassium - 40 B. Uranium - 238 C. Carbon-14 D. Lead-212

Hydrobromic acid (HBr) and sodium hydroxide (NaOH) combine in a neutralization reaction to form water and a salt. Which of the following correctly identifies the salt that is produced? OHBr NaBr BrH HOH

Dyfuzja co to jest i na czym polega

An ore is a rock that contains which of the following? A. a mineral or metal with economic usefulness B. a gemstone only C. a mineral or metal with no practical use D. particles of rock that erode into sediment

At 29°C, Kp = 5.3 ✕ 102 atm-2 for the following reaction. N2 (g) + 3 H2 (g) equilibrium reaction arrow 2 NH3 (g) When a certain partial pressure of NH3 (g) is put into an otherwise empty rigid vessel at 29°C, equilibrium is reached when 55.

If ice is heated at constant pressure of 0.0512 ATM will it

The sun's inner core is the hottest part of the sun true or false

When light from the sun warms the ground, the transfer of heat energy is called A) conduction. B) power. C) radiation. D) reflection.

What is alkyl hydrogen sulphate