aThe first ionisation energy of an element is the energy required to remove one electron from each atom in a mole of atoms of the element in the gaseous state 元素的第一游离能是要求的能量从每个原子去除一个电子在元素的原子痣在气体状态[translate]...
We can use Avogadro’s number to determine the number of molecules in a drop of water. Avogadro’s number tells us that there are 6.022 x 10^23 molecules of water per mole of water. So, next, we calculate how many molecules there are in a drop of water, which we determined: molecule...
18 Which of the following statements is true for one mole of a substance?Antar a pernyataan berikut, yang manakah benar bagi satu mol bahan? A 1 mol of magnesium contains 6.02 x 1023 molecules I mol magnesium mengandungi 6.02 x 1023 molekul B 1 mol of oxygen gas contains 6.02 x 102 ...
How many moles of H, are present in 4.9 gH2SO4? View Solution Calculate the total number of oxygen atoms present in 0.5 moles ofH2SO4 View Solution How many no. ofσ-bonds are present inH2SO4? View Solution How many maximum atoms are present in one plane of[PtCl3(n2C2H4)]−?
Two atoms of hydrogen combine with one atom of___ (氧气) to form a molecule of water. 答案 答案是oxygen.本题考查语境中选用恰当的词或短语;oxygen n. 氧气;氧;不可数;one atom of oxygen一个氧原子;故答案是oxygen. 结果二 题目 【题目】Two atoms of hydrogen combine withone atom of_(氧气) ...
View Solution 4Zn+10HNO3→4Zn(NO3)2+NH4NO3+3H2O. In this reaction one mole ofHNO3is reduced by View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium NCERT Solutions for Class 11 English Medium ...
State the ratio of the atoms in one molecule of each of the following: a) methane gas, {eq}CH_4 {/eq}. b) sodium nitrate. Chemical Formula: The chemical formula of the molecule (methane and sodium nitrate) will help us to determine the mole ra...
endothermic absorbing heat from its surroundings. it will feel cold exothermic releasing heat it will feel hot Avogadro's number 6.022 x 10^23 of and elements atom to 1 mole of itex: 1 mole Cu/ 6.022 x 10^23 atoms Cu mass numbers on periodic table measured in g/mol關於...
百度试题 结果1 题目 I. E. of one H atom is 2.18 × 10-18.J The I. E. of H atom is k.J mole His - B A) 1505 k.J mol-平 B) 1310 k.J mol-1C) 1608 k.J mol-1D)None 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
This program determines the molecular mass of a substance. Enter the molecular formula of the substance. It will calculate the total mass along with the elemental composition and mass of each element in the compound. Use uppercase for the first character in the element and lowercase for the sec...