What is the correct name for CaSO4⋅2H2O? a. none of these b. calcium sulfate dihydrate c. calcium sulfide dihydrate d. calcium sulfur hydrate Naming Ionic Compounds: Ionic compounds are named for the ions that ma...
Choose the correct name for H3PO3. a) phosphorous acid. b) hydrogen phosphoric acid. c) phosphoric acid. d) trihydrogen phosphorus trioxic acid. What is the name of an acid with the formula HNO2? a) nitrous acid b) nitric acid c) hydronitric acid d) hydronitrous acid ...
– A great success. A．say B．talk C．speak D．tell句意：他们对那次比赛说了什么？say,说，后加说的内容；talk，谈论，talk about…,谈论……；speak,说，不及物动词，做及物动词时只能加语言；tell,告诉，tell sb sth，告诉某人某事。根据句意，what代替所说的内容，故选A。
What does 'carbon sinks' (Para．2) mean?某企业为增值税一般纳税人，2023年5月采购一批原材料，增值税专用发票上注明的价款为500万元，增值税税额为65万元，该企业向供应商开出一张面值为520万元的商业承兑汇票，剩余款项以银行本票支付。不考虑其他因素，该企业当月应记入“应付票据”科目的金额为（）万元。
AgNO3(aq) + Na2CO3(aq) arrow For the following reaction, write a balanced chemical equation: (blank) Zn + (blank) Fe(NO3)3 arrow (blank). Write the balanced ionic equation and the balanced net ionic equation for the following. Write the correct name of a...
What is the correct formula for sodium carbonate? What is the formula weight of sodium carbonate? What is the chemical element symbol of sodium? Which symbol represents an isotope of carbon? What is a carbonate mineral? What is the symbol for phosphorus?
（12分） （1）维生素C的结构简式是 ，它的分子式是 。由于它能防治坏血病，又称为抗坏血酸。在维生素C溶液中滴入紫色石蕊试液，溶液颜色变红，说明维生素C溶液具有 性；在维生素C溶液中滴入少量蓝色的含有淀粉的碘水，可观察到的现象是 ，说明维生素C具有 性。 （2）氟氯代烷是一种能破坏臭氧层的物质。在...
Choose the correct answer. 选择最佳答案。 An is a multiple unit train that operates using electrical power. A. DEMU B. DMU C. EMU D. consist 查看完整题目与答案 ( )某店铺店主想报名参加聚划算活动,他应该选择以下哪种产品 A. 处于上升期的产品 B. 滞销产品 C. 新品 D. 形象款产...
What is the correct equation for the reaction quotient of the following reaction? HNO_{3 (aq)} + H_2O_{(l)} \rightleftharpoons H_3O^+_{(aq)} + NO^-_{3 (aq)} Write a complete (i.e. balanced equation with phases) for the followi...
Which of the following is not an example of a neutralization reaction? a) HCl + NaOH \to NaCl + H2O b) 2 NaOH + H2CO3 \to Na2CO3 + 2 H2O c) H2SO4 + 2 NH4OH \to (NH4)2SO4 + 2 H2O d) 2 AgNO3 + Zn \to 2Ag + Zn(NO3)2 ...