A. Copper oxide B. Oxygen copper C. Copper oxygen D. Oxide copper 相关知识点: 试题来源: 解析 A。解析:铜(copper)是金属元素,氧(oxygen)是非金属元素。根据英文命名规则,金属在前,非金属在后且氧变为oxide,所以是Copper oxide。B、C、D选项不符合正确的命名规则。反馈...
百度试题 结果1 题目Water is a compound containing the elements h___and oxygen. (根据首字母单词拼写) 相关知识点: 试题来源: 解析 【答案】hydrogen 反馈 收藏
aA compound is a substance that can be split into two or more elements. Water is a compound because it can be split into its components, hydrogen and oxygen. 化合物是可以被分裂成两个或多个元素的物质。 因为它可以被分裂成它的组分、氢和氧气,水是化合物。 [translate] ...
我位于紧挨小条。 不能等待遇见您![translate] afor you,a thousand times over,and than there is a way to be good again 为您,一千次,和比再有一个方式是好[translate] awater is a compound containing the elements of hydrogen and oxygen 水是包含氢和氧气的元素化合物[translate]...
Water is a compound c___ the elements of hydrogen and oxygen.(根据首字母单词拼写) 相关知识点: 试题来源: 解析 containing [解析] 考查非谓语动词。句意:水是一种含有氢和氧元素的化合物。根据句意以及首字母提示,空处应用动词contain,表示“包含,含有”,contain与逻辑主语compound之间是主动关系,所以空处...
The empirical formula of a compound is not its true formula because this only shows the lowest ratio between the component elements. However, in some cases, the empirical formula of the compound also becomes the true formula of the compound i.e. {eq}H_2O ...
Oral administration of LR16 (at small doses that produced no ill effects) to rats that were fed a diet rich in cholesterol caused substantial reductions of total serum cholesterol and low density lipoprotein-cholesterol, while high density lipoprotein-cholesterol remained unchanged. 展开 ...
True or false? Hydrogen gas should diffuse four times faster than oxygen gas, assuming that they are at the same temperature.Graham's LawGraham's Law of Diffusion allows the comparison of the rates of two gases by their molar mass when they...
Oxygen in marine sediments regulates many key biogeochemical processes, playing a crucial role in shaping Earth’s climate and benthic ecosystems. In this context, branched glycerol dialkyl glycerol tetraethers (brGDGTs), essential biomarkers in paleoenv
A compound of the formula : wherein R is hydrogen or lower alkyl, R is carboxy(lower)alkyl or protected carboxy(lower)alkyl and R is -CHNH-R, -CH=N-R or -CH-R in which R is acyl, acylamino, heterocyclic amino, heterocyclic(lower)alkyl or ar(lower)alkoxy and R is acyloxy or ...