A zinc atom loses 3 electrons to become a zinc ion

The burning of a sweet potato sample generates 102.5 kJ of heat. This heat was used to raise the temperature of 300 grams of water from its initial temperature of 15.5 degrees Celsius. Considering the specific heat of water is 4.

Barium hydroxide dissolves as follows. ba (oh) 2 (s) ? ba2 + (aq) + 2oh - (aq) how many moles of ba (oh) 2 are required to make 1.0 l of solution in which the ohconcentration is 0.050 m?

Which gas is not known as green house gas

If the value for K = 46 at 500 K, which gas predominates, N2O4 or NO2?

What is the correct name for Au3N?

2. An automobile tire has a pressure of 210 kPa at 293 K. What will be the tire pressure after driving, if the tire temperature rises to 308 K?

Students measuring the mass of a rock record 6.759 g, 6.786 g, 6.812 g, and 6.779 g. Which other measurement of the block's mass would be most precise? A. 6.702 g B. 6.781 g C. 6.605 g D. 6.858 g

What two elements make up dihydrogen monoxide?

What did scientists observe using the earliest microscopes

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.