Chemistry, 20.08.2019 12:50 AquaTyrant5054
An atom in the ground state has two electrons in its first shell and six electrons in its second shell. what is the total number of protons in the nucleus of this atom? (1) 5 (2) 2 (3) 7 (4) 8
Answers: 1
Chemistry, 21.06.2019 22:00
Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system
Answers: 1
Chemistry, 21.06.2019 22:20
Calcium hydride (cah2) reacts with water to form hydrogen gas: cah2(s) + 2h2o(l) → ca(oh)2(aq) + 2h2(g) how many grams of cah2 are needed to generate 45.0 l of h2 gas at a pressure of 0.995 atm and a temperature of 32 °c?
Answers: 2
Chemistry, 22.06.2019 09:30
The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?
Answers: 3
Chemistry, 22.06.2019 16:30
Correct relationship between molecular formula and empirical formula
Answers: 1
An atom in the ground state has two electrons in its first shell and six electrons in its second she...
History, 19.01.2021 19:40
Mathematics, 19.01.2021 19:40
Mathematics, 19.01.2021 19:40
Mathematics, 19.01.2021 19:40
Mathematics, 19.01.2021 19:40
English, 19.01.2021 19:40
Mathematics, 19.01.2021 19:40
History, 19.01.2021 19:40
Social Studies, 19.01.2021 19:40
Chemistry, 19.01.2021 19:40