1.I am chasing my future husband at a speed of 6.7 kilometer
1.I am chasing my future husband at a speed of 6.7 kilometers/pocoday,and the Zachary Quinto is currently 24 miles away (5280ft=1 mile,2.54cm= 1inch),how long before I catch him?
2.The half-life of carbon-14 is 5730 years.After 45840 years,a sample of 200 grams will have decayed to how many grams?
3.The half-life of germanium-66 is 30.2 years.I originally had a sample of 5 grams.How many years have elapsed if my sample has decayed to 312.5 milligrams?
4.When an atom gains or loses neutrons,the atom becomes a _______________.
5.When an atom gains or loses protons,the atom becomes a _______________element.
6.When an atom gains or loses electrons,the atom becomes a _______________.
2.The half-life of carbon-14 is 5730 years.After 45840 years,a sample of 200 grams will have decayed to how many grams?
3.The half-life of germanium-66 is 30.2 years.I originally had a sample of 5 grams.How many years have elapsed if my sample has decayed to 312.5 milligrams?
4.When an atom gains or loses neutrons,the atom becomes a _______________.
5.When an atom gains or loses protons,the atom becomes a _______________element.
6.When an atom gains or loses electrons,the atom becomes a _______________.
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我追逐公里/ pocoday我未来的丈夫在速度6.7,而451昆托目前距离24海里（五二八○英尺= 1英里,2.54厘米= 1inch）,多久之前,我抓住他吗?2.半衰期的碳-14五千七百三年.经过四万五千八百四十零年,1克样品200将有腐烂多少克?3.半衰期锗- 66为30.2岁.我本来有一个5克的样本.多少年过去了,如果我的样本已腐烂至312.5毫克?4.当一个原子的收益或损失的中子,原子成为_______________.5.当一个原子获得或失去质子,原子成为_______________element.6.当一个原子获得或失去电子,原子成为_______________.不会可是翻译完了!!
1年前
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你能帮帮他们吗