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elements and compounds
Page 3
Questions (232)
what is the maxium mass of chlorine that could be released in the stratosphere by 100g of ech compound
3 answers
asked by
toni
420 views
what is the main ingredient in 22-karet gold? is it copper,tin,gold,or steel?
1 answer
asked by
logan
363 views
Use the following information to identify element A and compound B, then answer questions a and b.
An empty glass container has a
2 answers
asked by
Ada
539 views
The mass % of C in methane (CH4) is?...Can any one help me????
2 answers
asked by
Denmark
1,242 views
Chromium is ametal that is added to steel to improve its resitance to corrosion. Calculate both the number of miles in a sample
4 answers
asked by
Chopsticks
1,909 views
what are the things controls oxygen?
1 answer
asked by
joey
307 views
is this correct or incorrect
nonmetal are elements that tend to gain electrons in chemical reactions.
2 answers
asked by
liz
554 views
What is the ^S for NaCl (l)?
1 answer
asked by
Jayd
305 views
When nickel combines with flourine to form nickel [3] floride, the charge of the nickel ion is
All of my references list NiF2 as
1 answer
asked by
Cory
499 views
What are the names and symbols of the two elements found in all silicate minerals?
http://en.wikipedia.org/wiki/Silicate After
1 answer
asked by
mjklolk
464 views
In a molecule of lithium sulfide, there are two atoms of lithium and one atom of sulfur. Which statement about lithium sulfide
1 answer
asked anonymously
38 views
Carbon, hydrogen, oxygen, and nitrogen are the four most common elements in living things. Which statement BEST describes the
1 answer
asked by
dude
54 views
Which one of the following is not a trace element in the human body?
a. fluorine b. nitrogen c. zinc d. manganese e. iodine. The
3 answers
asked by
Jade
2,116 views
The percentage composition of chlorine, by mass, in the compound K2PtCl4 is
3 answers
asked by
christine
2,012 views
Chlorine is a Halogen. It is located in Group 7A of the periodic table. Two chlorine atoms bond to form highly reactive chlorine
1 answer
asked anonymously
49 views
In a molecule of lithium sulifide there are two atoms of lithium and one atom of sulfur which statement about lithium sulfide is
1 answer
asked anonymously
23 views
How many atoms of oxygen are in Fe(NO3)3
1 answer
asked anonymously
14 views
what does fluorine ion have in common with a neon atom and a sodium ion?
4 answers
asked by
Chelsea
1,388 views
the major commercial aluminium ore is bauxite,AlO3.H2O(s).What is its molar mass?The analysis of a representive sample of
4 answers
asked by
kabelo
1,207 views
Will you please check my answers?
Substances or mixtures? 1. Carbon Dioxide = M 2.salt water =M 3. table salt = M Homogeneous or
1 answer
asked by
Reed
1,212 views
I am filling out a chem packet. Is what graphite, diamond and fullerene have in common is that they're all made of carbon?
My
3 answers
asked by
Brielle
1,106 views
Calcium chloride contains calcium and chloride ions. Write the ground-state electron configuration for the calcium ion.
3 answers
asked by
Naomi
1,032 views
Fool's gold is not gold at all but only lead IV sulfide. If you have 751.0 grams of lead how many grams of fool's gold can you
2 answers
asked by
Maria
935 views
Duralin is an alloy of aluminium containing
4.5% manganese, 3.5% copper, and 0.45% magnesium. How much magnesium is present in a
3 answers
asked by
lynn
927 views
a 5.0 g sample of KBr at 25.0
2 answers
asked by
Anonymous
907 views
what is the oxidation number of Chlorine in KCIO4???
2 answers
asked by
kevin
883 views
What it the percentage of sulfur in copper(I) sulfide, Cu2S
2 answers
asked by
Tierney
873 views
Is sidewalk cement an element or a compound? Please help immediately!!! :(
3 answers
asked by
Andrea
828 views
Nitrogen in air is int he form of two nitrogen atoms fastened together, N2. Is Nitrogen an element or is it a compound?Explain.
P
2 answers
asked by
Mary
836 views
The electronic configuration of manganese is:
1s22s22p63d54s2. a)What is the maximum oxidation state of manganese? b)Explain how
2 answers
asked by
Sabrine
841 views
Oxidation state of Cu in CuO
1 answer
asked by
Nadia
18 views
I posted this question a bit ago and received some help..but need more.. thanks
Use the following information to identify element
2 answers
asked by
Julia
827 views
What is the percentage of oxygen in____?
Mg(OH)2
2 answers
asked by
Cool Dom
633 views
Can an element be separated from a compound? Can an element form a compound?
The reaction of zinc metal and hydrochloric acid
4 answers
asked by
Roma
771 views
what is the symbol for chromium (II) sulfate?
You mean the formula? CrSO<sub>4</sub> yes! thanx!!!!!! do u know how to find the
1 answer
asked by
INEEDHELP!!!
760 views
Explain which is more ionic NaF or LiF
1 answer
asked by
Anonymous
727 views
What compounds can be formed by combinations of potassium, lithium, chlorine, and/or bromine?
4 answers
asked by
Emmy
708 views
what happens when you mix calcium with oxygan
Generally, one could expect Calcium Oxide (CaO) to form. In the presence of water,
1 answer
asked by
oli
736 views
Why is the formula for potassium peroxide K2O2?
1 answer
asked by
A Canadian
676 views
What is the element whose 4+ cation has the following set of quantum numbers, n=3, l=2, ml=0, and m.s=+1/2 for its highest
2 answers
asked by
Ceamus Angelina
688 views
Is neon and oxygen written as neonide and oxide?
4 answers
asked by
Shewolf
658 views
4. The difference between an atom and and element is
a. an element is made of atoms b. atoms are made of elements c. atoms are
4 answers
asked by
mysterychicken
668 views
What components make up lithium?
2 answers
asked by
Lana
613 views
amphetamine (c9h13n) is a powerful stimulant. what is the percent composition of all of the elements in this compound?
A.
3 answers
asked by
drew
624 views
Compare the properties of elements and compounds. Give two examples of each, including one example that exists in the human
2 answers
asked by
Ashlee
643 views
What is the chemical formula and name for:
Na+1 and Na-3?
3 answers
asked by
Anonymous
590 views
Hi!
I'm in chem class and I don't know the answer to these questions I have several metal alloys and have to tell their general
5 answers
asked by
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
627 views
whats is produced Nickel + Copper(II) Chloride
2 answers
asked by
amber
572 views
what is the mass of 1 mole of carbon dioxide (CO2), and silicon dioxide (SIO2)?
4 answers
asked by
Katie
591 views
Select all true statements from the following:
a. ) Metals are good conductors of heat and electricity. b. ) Nonmetals generally
2 answers
asked by
Nathan
597 views
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Parent Categories (17)
Atomic Mass
Atomic Structure and Bonding
Basic Concepts
Chemical Substances
Chemistry
Chemistry Education
Earth Sciences
Oxidation Numbers
Periodic table
Pure Substances
Science and Chemistry
Science and Technology
Substances
Substances and Mixtures
Types of Matter
Types of Pure Substances
Types of substances