Homework Statement Gas is contained in an 7.71 liter vessel at a temperature of 18.6oC and a pressure of 8.35 atm. Determine the number of moles of gas in...
4 (a) Explain, in terms of molecules, how a gas causes a pressure on the walls of its container.[4] (b) Complete the following two sentences.(i) At constant temperature, the pressure of a gas increases as its volume(ii) At constant volume, the pressure of a gas increases as its ...
A gas consists of a large number of molecules that are in constant, random motion. These molecules move at high speeds and collide with the walls of the box. When a molecule collides with the wall, it exerts a force on the wall due to the change in momentum of the molecule. Since ...
Explain (step by step) how to calculate the number of molecules present in a sample. a) 2.0 mol of Ammonia. b) 1.6 mg of water How would one prepare one liter of 4 M NaCl solution? What chemical reactions produce gas? How many grams of hydrogen H_2 are needed to produce 82 grams...
Answer to: How do you calculate the number of moles of a substance you have? Give an example. By signing up, you'll get thousands of step-by-step...
3.Which gas has the fastest average velocity?4.How can the pressure in the two containers be equal to each other since the larger gas B molecules collide with the container walls more forcefully? 答案 1.the number of molecules are equal2.average kinetic energy are the same3.A has faster...
百度试题 结果1 题目24 If there are x molecules in 22 g of carbon dioxide gas, how many molecules are present in 28g of nitrogen gas? A A. 2x B 4x C x/2 D xi4 相关知识点: 试题来源: 解析 A 反馈 收藏
This leads to the definition of an equivalent, or specifically a milliequivalent: (mEq = dfrac{(mass)(valence)}{MW}) This equation assumes that both mass and MW, or molecular weight (the same as molar mass but applied to molecules instead of single atoms), are given in milligrams. ...
To calculate the number of atoms in a formula, the weight of a sample, its atomic mass from the periodic table and a constant known as Avogadro's number are needed. Step 1: Find the Molar Mass of the Formula Find a periodic table of elements to find the molar mass of your sample. ...
In order to accurately calculate the values of Q, W, ΔU, ΔH and sketch the PV diagram for each process, we would need to know the initial temperature or the number of moles of the ideal gas. Without this information, it is not possible to provide a precise solution...