可否翻译出原体,在给出英文答案?1.What is a proton,neutron,and electron?2.What is an element,mixture,molecule,and compound?3.What will determine if an object will float if is placed in a fluid?4.What is the unit of energy used in electricity bills?How many joules is this equal to?(Can...
化学知识忘没了...搞清它们关系了应该就能选出来了.
if a proton has a relative mass of 1 unit and a relative charge of +1 unit .what is the接上relative mass and charge of :1.a neutron2.an electron? 答案 质子,中子,电子...有什么关系?化学知识忘没了.搞清它们关系了应该就能选出来了.相关推荐 1if a proton has a relative mass of 1 un...
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Proton VPN: Privacy-conscious, many add-ons available You can follow my day-to-day project updates on social media. Be sure to subscribe tomy weekly update newsletter, and follow me on Twitter/X at@DavidGewirtz, on Facebook atFacebook.com/DavidGewirtz, on Instagram atInstagram.com/David...
结果1 题目 6 The proton number of element X is 6. The proton number of element Y is 9.What is the formul a of a compound of these elements? D A X2Y3 B X3Y2 C XY3 D XY_4 相关知识点: 试题来源: 解析 D 反馈 收藏 ...
What is a VPN or Virtual Private Network? What is the Best VPN? These are frequently asked questions that we here at TROYPOINT receive on a regular basis. The following guide will help you understand what a VPN is, how a VPN works, why you should be using one, and the best VPNs ...