Agroup of students working in a high school chemistry lab believe they have discovered a new element! how exciting! upon further testing by scientists (with better equipment), it is found that the new element contains 74 protons and 110 neutrons. 1. what is the atomic number of this element? ¬¬ 2. what is the mass number of this element? 3. is this really a new element? explain your reasoning. 4. give the name and symbol for this 5. when the students discovered it, did they find a solid, a liquid, or a gas? explain your reasoning.
Answers: 2
Chemistry, 22.06.2019 05:00
Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%
Answers: 1
Chemistry, 22.06.2019 11:30
What is the main reason why some developing countries fear the increase the free trade policies around the world?
Answers: 2
Chemistry, 23.06.2019 05:00
What is dhmo? hint: you find it everywhere something is wet..
Answers: 1
Chemistry, 23.06.2019 08:30
What percentage of energy used in the u.s is produced from fossil fuels
Answers: 2
Agroup of students working in a high school chemistry lab believe they have discovered a new element...
Computers and Technology, 06.10.2019 01:30
Biology, 06.10.2019 01:30
Physics, 06.10.2019 01:30
Geography, 06.10.2019 01:30
Computers and Technology, 06.10.2019 01:30
Chemistry, 06.10.2019 01:30