The combining of hydrogen and oxygen gas into liquid water is an example of what kind of change?

phase

chemical

physical

What kind of charge would the hydrogen atoms have compared to the oxygen?

Which property would cesium most likely have? A. It is hard. B. It is ductile. C. It is a gas. D. It has low reactivity.

Which list of elements contains a metal, a metalloid, a nonmetal, and a noble gas

How many atoms of oxygen are in 1.0 g of k2o2 (mw 110.0) ?

P O R F A V O R 4. Expresa las siguientes magnitudes en unidades del Sistema Internacional. (1 punto) a. 45 m3 b. 1250 cm3 c. 63 días d. 97 cm/min2 e. 927 g∙cm/min2 f. 97 km/h2 g. 2500 g/cm2 h. 36 km/h

When is alpha particle emission most likely to occur? A. When the nucleus has more than 83 protons. B. When the ratio of neutrons to protons in the nucleus is too high to be stable. C. When the nucleus has a mass of more than 83 amu. D.

Researchers used a combustion method to analyze a compound used as an antiknock additive in gasoline. A 9.394 mg sample of the compound yielded 31.154 mg of carbon dioxide and 7.977 mg of water in the combustion.

The formula for binary ionic compound formed between cesium and fluorine

If the mass of a material is 76 grams and the volume of the material is 16 cm3, what would the density of the material be? g/cm3

Calculate the specific heat of a metallic element if 50.0 g of the metal need 314 joules of heat energy to raise the temperature from 25°C to 50°C.