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elements and compounds
Page 2
Questions (232)
The no. of nitrogen atoms in Zn(NO3)2
3 answers
asked by
Falcon
886 views
How many atoms of each element are in this compound? MgBr2
A. 2 magnesium atoms and 2 bromine atoms B. 2 magnesium atom and 2
4 answers
asked by
lalt
1,285 views
name a metal carbonate that doesn't decompose when heated with a bunsen burner.
4 answers
asked by
sarah
892 views
what is the percentage of sulfur and copper(I) sulfide, Cu2S is the answer 35.58% if not could you show me the formula
3 answers
asked by
Tierney
2,561 views
Uranium is used as a fuel, primarily in the form of uranium(IV) oxide, in nuclear power plants. A small
sample of uranium metal
2 answers
asked by
grella
933 views
the gas that makes up 78% of the atmosphere.
1.B 2.D 3.C 4.E 5.A 6.A 7.E 8.D 9.B 10.C Please trust me im not lying
4 answers
asked by
Real Ansewers
463 views
An unknown element X forms a compound with bromine: XBr. Predict the chemical formula of the compound that element X makes with
5 answers
asked by
Dan
1,971 views
a blank such as h2so4 is a symbol that shows the element in a compound and the ratio of atoms
7 answers
asked by
Bro
1,883 views
Potassium chlorate is 75% pure 48 gram of oxygen would be produced from how much potassium chlorate
2 answers
asked by
Prince
680 views
Choose the correct names of the atoms or molecules. Check all that apply
Silicium Carbon monoxide Mercurium Hydrogen chloride
3 answers
asked by
Emily
2,022 views
Uses and Applications of Metals and Nonmetals
3 answers
asked anonymously
18 views
A typical solid fertiliser for use with household plants and shrubs contains the elements N, P and K in the ratio of 15g: 30g:
2 answers
asked by
Ta
901 views
How come the formula for potassium peroxide is K2O2; I can't see how you'd get that...
3 answers
asked by
A Canadian
2,887 views
a coin is composed of gold and silver. the 5.00g coin is dissolved in nitric acid and the solution treated with NaCl to
3 answers
asked by
Help please!
1,129 views
Propane is widely usid in liquid form as a fule for barbecue grills and camp stoves for 58.5g of propane, calculate the
3 answers
asked by
Missy
765 views
Carbon (C) and hydrogen (H) are pure substances. Each is made of only one type of atom, but carbon atoms are different from
15 answers
asked by
Jo
102 views
Aluminum cookware is reffered ti as "anodized aluminum". The anodizing process puts a layer of aluminum oxide on the aluminum,
4 answers
asked by
Stacey
904 views
When two or more elements are combined, the substance produced is a ________.
A suspension B transitional metal C compound D
7 answers
asked by
<
35 views
1. Which elements are most abundant in living organisms?
A. hydrogen, carbon, calcium, potassium, oxygen, and phosphorus B.
7 answers
asked by
Elma
10,358 views
Classify each of the following pure substances as an element or a compound.
methane (CH4) in natural gas a silicon (Si) chip
2 answers
asked anonymously
50 views
what is the color of potassium oxide with indicator
1 answer
asked anonymously
59 views
what is the color of the product potassium oxide
1 answer
asked anonymously
63 views
what is the color of lithium oxide
1 answer
asked anonymously
64 views
what is the color of the product magnesium oxide
1 answer
asked anonymously
66 views
Which list only includes terms that describe oxygen gas, O2?(1 point) Responses atom, compound, molecule atom, compound,
3 answers
asked anonymously
83 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 by
In a molecule of lithium sulfide, there are two at
229 views
nickel metal and magnesium nitrate(aq) are combined
1 answer
asked by
Anonymous
62 views
Classify each of the following as an element or compound and explain your classification.
A. Carbon dioxide (The gas we breathe
4 answers
asked by
Drea Stevenson
466 views
Determine if the following statement is true or false. If true, choose TRUE. If false, choose the rewording that is true.
Atoms
2 answers
asked by
Anonymous
855 views
Which is an ion found in a glass of water?
i think it would be oxygen, correct?
4 answers
asked by
Castermans.m
2,520 views
which of the following items is a salt?(1 point) Responses calcium carbonate calcium carbonate sodium hydroxide sodium hydroxide
3 answers
asked by
trippie
44 views
Using mass percentages:-
The American Dental Association recommends that you should consume 3.0 mg of fluoride a day. If you get
2 answers
asked by
Mahnad
534 views
Chlorine is used to disinfect drink water supplies and pool water. Suppose you have 13.8 L of Cl2 in a cylinder at 1000 torr and
1 answer
asked by
daniel miller
424 views
can you help me in elements and compounds?
1 answer
asked by
spandana
444 views
a substance made of two or more elements chemically combined in a set ratio or proportion is called what
2 answers
asked by
Steve
1,025 views
Tungsten trioxide (WO3) has a rich yellow color and is often used as a pigment in ceramics and paints. In order to test a
2 answers
asked by
Decisice 2
622 views
What is the percentage by weight of calcium in CA(OCL)2? [CA=40,Cl=35•5,O=16].
3 answers
asked by
Chemistry inquirer
19 views
when you were heating milk on the stoven you accidentally spilled some milk on the burner . what color would you see ? why would
1 answer
asked by
Maria
387 views
Which of the following correctly explains the difference between an element and a compound?
A. An element is made up of only one
3 answers
asked by
needapass
49 views
The symbol of the lead(IV) ion is ?
3 answers
asked by
Amber
1,158 views
A bag contains a mixture of copper and lead BBs. The average density of the BBs is 9.60g/cm cubed. What is the percent of copper
2 answers
asked by
Haley
530 views
1) Oxygen and boron are in the same period . When they form a compound----- is written first.Phosphorus and arsenic are the same
1 answer
asked by
nick
425 views
A geologist discovered a new rock which he suspected contained an oxide of an element called mysterium. He gave thr ock to a
3 answers
asked by
Nelly
529 views
Compare the properties of elements and compounds. Give two examples of each, including one example that exists in the human
3 answers
asked by
Boricua
504 views
explain the difference between the following three substance carbon (c) carbon dixoide (co2) and oxygen (o2)
3 answers
asked by
clodine
355 views
How are oxygen and ozones alike? How are xyggen and ozone different?
1 answer
asked by
Please help
332 views
What are the elements used to make the ingrediants of each category (the same element may be listed in several categories, but a
2 answers
asked by
samantha
528 views
Which of the following substances is a compound carbon water oxygen gold
3 answers
asked anonymously
50 views
What is O2 mean?
Also what is oxygen gas the formula? Please could someone answer this?
1 answer
asked by
A
285 views
Is the percentage of sodium in pure table salt 39.34%?
2 answers
asked by
London
738 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