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How do you write SiO2.nH2O in words?
Silicon dioxide and dihydrogen oxide (water)
Why is water the formula for a chemical compound?
Water is a chemical compound because it has 2 hydrogen atoms and 1 oxygen atom. if there is a formula for water it means water is a chemical in other words H2O
How is water a compound?
Water is a chemical compound because it has 2 hydrogen atoms and 1 oxygen atom. if there is a formula for water it means water is a chemical in other words H2O
How do you identify the unknown substance as a percentage hydrate lab?
The formula for percent hydrate is calculated by taking the mass of the water lost and dividing by the mass of the hydrate.1. To calculate the water lost, subtract the value for the mass of the anhydrate (substance after it has been heated and dried [without water]) from the value for the mass of the hydrate (substance before it has been heated [with water]).Mass hydrate - mass anhydrate = water lostOR, another way to put itMass before heating - mass after heating = water lost2. Next, divide the mass of the water lost by the mass of the hydrate.Mass water lost- mass hydrateEx. A student was asked to identify an unknown hydrate by following the procedure described in this module. After heating and cooling, a 2.752g sample of this unknown weighed 1.941g. Students were given a list of possible compounds from which to identify their unknowns:LiNO3 * 3 H2OCa(NO3)2 * 4 H2OSr(NO3)2 * 4 H2OIn order to identify the unknown substance, the percent hydrate for the following compounds listed above needs to be calculated. This is done by first calculating the molar mass of each hydrate, then calculating the percent of water in each hydrate.Before proceeding, the amount of water lost needs to be calculated, followed by calculating the percent water in the unknown hydrate.Water lost: 2.752g hydrate - 1.941g anhydrate = 0.811gPercent water of hydrate: 29.47%0.811g2.751g x 100%1. Identify the molar mass of each hydrate.LiNO3 * 3 H2O (Lithium Nitrate Trihydrate)Molar Mass of LiNO3 (Lithium Nitrate): 68.9459gMolar Mass of 3 H2O (Water): 18.0152 * 3 OR 54.0456gMolar Mass of LiNO3 * 3 H2O = 122.9915g (add values above, not multiply!)Ca(NO3)2 * 4 H2O (Calcium Nitrate Tetrahydrate)Molar Mass of Ca(NO3)2 (Calcium Nitrate): 164.0878gMolar Mass of 4 H2O (Water): 18.0152 * 4 OR 72.0608gMolar Mass of Ca(NO3)2 * 4 H2O = 236.1486gSr(NO3)2 * 4 H2O (Strontium Nitrate Tetrahydrate)Molar Mass of Sr(NO3)2 (Calcium Nitrate): 211.6298gMolar Mass of 4 H2O (Water): 18.0152 * 4 OR 72.0608gMolar Mass of Sr(NO3)2 * 4 H2O = 283.6906g2. Calculate the percent water in each hydrate.Percent Water of Hydrate LiNO3 * 3 H2O (Lithium Nitrate Trihydrate) - 54.0456g122.9915g x 100 = 43.94%Percent Water of Hydrate Ca(NO3)2 * 4 H2O (Calcium Nitrate Tetrahydrate)- 72.0608g236.1486g x 100 = 30.52%Percent Water of Hydrate Sr(NO3)2 * 4 H2O (Strontium Nitrate Tetrahydrate)- 72.0608g283.6906g x 100 = 25.40%Due to the closest comparison in percentage values, the most likely compound is Ca(NO3)2 * 4 H2O (Calcium Nitrate Tetrahydrate). The values aren't exact matches probably because the water was not fully evaporated while being heated (leading calculations to indicate less water than there really was/is in substance). In other words, due to errors made on behalf of the experiment conductor by not completely heating the substance.Calculating Molar Mass of SubstancesElement A: Number Atoms Element A x Atomic Mass Element A = Mass AElement B: Number Atoms Element B x Atomic Mass Element B = Mass Betc.Add all of the mass values found above (Mass A + Mass B ...) and you have the value of molar mass. In the case above, to find the molar mass of the hydrates, simply add the molar mass of water (multiply by however many water molecules are in compound) and the molar mass of the other compound.
Words that can make out of carbohydrates?
hate sat car hydrate hat dry
A compound that has a specific number of water molecules bound to its atoms?
The term for a compound that has a specific number of water molecules bound to its atoms is a hydrate. In a hydrate, water molecules are typically attached to the compound through weak chemical bonds known as hydrogen bonds. The number of water molecules in a hydrate is represented by a numerical prefix in the compound's name, such as in CuSO4•5H2O, where there are five water molecules bound to each copper sulfate molecule.
How do you write a sentence using compound words?
you can put a compound word into any sentence you want but it has to make sense.(see what i did there)
What are words with hydro meaning water?
hydrogen, hydrometer, hydroponics, hydrophobia
What is a compound subject sentence for impact?
A compound subject for impact would have to be two words that are subjects in the beginning of the sentence and the word impact would have to be in the sentence somewhere.
What do you call conting words used in compound sentenes?
Words that connect phrases or clauses in a compound sentence are called coordinating conjunctions. These words include "and," "but," "or," "nor," "for," "yet," and "so." They are used to join independent clauses or coordinate elements within a sentence.
How do you write SiO2.nH2O in words?
Silicon dioxide and dihydrogen oxide (water)
What are the kinds of compound words in a compound sentence?
never thoughts of suicide! im too alive
What does compound complex word mean?
a complex compound word involves using multiple hard compound words in a sentence.
What is a compound entence?
A compound sentence is a sentence that contains two independent clauses joined by a coordinating conjunction (such as "and," "but," or "or"). Each clause in a compound sentence could stand alone as a complete sentence.
What is a group of words contain to a subject and predicate to form a compound or complex sentence?
clause
In English what is it called when you have two commas in a sentence closing in other words?
Hyposterclobic compound sentence.
A sentence without butandor?
Only compound sentences use the words "and", "but", and "or". An example of a sentence without these words is: "Casey is a brown dog".
