百度试题 结果1 题目The density of water is 1.00g/mL at 4℃.How many water molecules are present in 4.86 mL of water at this temperature?相关知识点: 试题来源: 解析 1.63×1023 molecules 反馈 收藏
The mass of water is usually measured in kilograms (kg) or grams (g), but for everyday purposes, we often use liters (L) or milliliters (mL) as a measure of volume. The weight of water can be calculated by multiplying its volume by its density. The density of water is approximatel...
Question: A sodium chloride solution has a density of 1.22g/mL. How many moles of NaCl are dissolved in 10.0mLof the solution? The density of water is 1.00g/mL. Density and moles To calculate the molar mass o...
Above and below this temperature, the density of water decreases (the same weight of water occupies a bigger space). So as the overall temperature of the water increases it naturally expands a little bit making the oceans rise. Effects of Global Warming: Seasons and Ecosystems Photo courtesy ...
Assume the density of water is 1000 kg/m3? Stoichiometry: Stoichiometry is the branch of chemistry which deals with the measurement of chemical substances in a chemical reaction. This measurement is important for the manufacturing of different chemicals and drugs and i...
Density Definition and Formula Density is the ratio of mass to volume of an object, and as such, density is a calculated rather than measured value. Finding density requires measuring both the mass and the volume of an object. Density is used to describe solids, liquids and gases. ...
Slurry concentration by weight can be measured by evaporating a known weight of slurry - and measure the weight of dried solids. Example - Calculating Slurry Density The density of a slurry where the density of the solids is 2500 kg/m3 the density of the liquid is 1000 kg/m3 the weight ...
water depth influences macrophyte density at all life stages,the simultaneous influences of harvesting and water depth should be carefully examined.Thus,this study aims to quantify the effects of differently harvesting Elodea nuttal-lii on its growth and reproduction at different water depths in field ...
Here we show how major rivers can efficiently connect to the deep-sea, by analysing the longest runout sediment flows (of any type) yet measured in action on Earth. These seafloor turbidity currents originated from the Congo River-mouth, with one flow tr
When some of the water is removed, the level of everything goes down. If the cylinder comes in contact with the heavier fluid at the bottom, it will float higher. Same density and diameter, but half the height, means half the weight, therefore half as much total weight of fluid must ...