Apiece of iron (cp = 0.450 j/(gi°c)) that has a mass of 21.5 g and an initial temperature of 100.0°c is submerged in x g of water (cp = 4.184 j/(gi°c)) at 20.0°c. the temperature of the system (iron and water) changes to 21.4°c. what is the value of x? a. 041 g. b. 80 g. c. 132 g. d. 574 g

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Explain that newton first law, second law and third law of motion?

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.