The balanced equation
BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + 2KCl(aq)
Further explanationGiven
word equation
Required
Balanced equation
Solution
Convert to chemical equation :
Reaction
BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + KCl(aq)
Give a coefficientaBaCl₂(aq)+ K₂CO₃(aq)--> bBaCO₃(s) + cKCl(aq)
Make an equationK, left = 2, right = c⇒c=2
C, left = 1, right = b⇒b=1
Ba, left = a, right = b⇒a=b⇒a=1
The equation becomes :
BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + 2KCl(aq)
Calculate the number of sucrose molecules in a 75.0 gram sample.
Answer:
1.32*10^23 molecules
Explanation:
sucrose formula: C12H22O11
molar mass: 12(12.01)+22(1.01)+11(16.00)=342.34g/mol
75.0 g C12H22O11 * (1 mol C12H22O11)/(342.34g C12H22O11)=0.219 mol C12H22O11
0.219 mol * (6.022*10^23)/mol = 1.32*10^23 molecules (three sig. figures)
Compared to atoms of metals, atoms of nonmetals generally
A)have higher electronegativities
B)have lower first ionization energies
C)conduct electricity more readily
D)lose electrons more readily
Compared to atoms of metals, atoms of nonmetals generally conduct electricity more readily. Therefore, option C is correct.
What are metal atoms ?The term metal atom is defined as an atom of an element that exhibits typical metallic properties, being typically shiny, with high electrical and thermal conductivity.
Metallic bonds form when the charge is spread over a greater distance than the size of individual atoms in solids. Most left elements in the periodic table form metallic bonds, such as zinc and copper.
Metals are defined as elements to the left of the line. Elements just to the right of the line have both metal and nonmetal properties and are referred to as metalloids. Nonmetals are elements at the far right of the periodic table.
Thus, option C is correct.
To learn more about the metal atom, follow the link;
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What are two sources of phosphorous?
A. stratosphere
B. Erosion
C. Cows
D. Fossil fuels
E. Fertilizer
Answer:
A. stratosphere
E. Fertilizer
Explanation:
I need help with these 7 questions ASAP pls
Giving away 20 points and brainlest, please help
What type of transport does not require energy to move molecules across the plasma membrane?
A. bilayer
B. active
C. passive
D. concentration gradient
Answer:
A
Explanation:
Answer:
I don’t think that A is the correct answer, I believe that C may be the correct answer
Explanation:
which element has the lowest atomic mass in group 6A
5. Geologists think that the inner and outer cores of Earth consist of
iron and nickel.
Answer:
is this true/false? if so its true.
Explanation:
HELP ME!!
If a water molecule (H20) has two hydrogen atoms and one oxygen atom, how would you describe the make-up of a carbon dioxide molecule (C02)?
1 carbon atom, 1 oxygen atom
1 carbon atom, 2 oxygen atoms
2 carbon atoms, 2 oxygen atoms
2 carbon atoms, 1 oxygen atom
Answer:
2
Explanation:
what occurs during a double replacement reaction
Answer:
A double replacement reaction is a type of chemical reaction that occurs when two reactants exchange cations or anions to yield two new products. Double replacement reactions are also called double replacement reactions, double displacement reactions, or metathesis reactions.
Explanation:
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What is the % of water in (MgSO4 . 2H2O)?
Answer: A hydrate is found to have the following percent composition: 48.8% MgSO4 and 51.2% water.
Explanation:
i dont know
Match the subatomic particle to its best explanation:
PHOTON
a fermion
b composite particle
c weak force
d strong force
e forces
f leptons
g up
h +2/3
i gravity
Answer:
a
Explanation:
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What science should i take in highschool? (Biology,Chemistry,Physics)
Answer:
Biology
Explanation:
I'm currently taking highschool biology right now and it's a lot of fun. If you like animals and cells, a lot of fun.
A balloon is filled with 10 liters of air at a pressure of 5 atm. What is the pressure of the balloon if the volume is changed to 20 liters
shorthand representation of compounds
The skeletal formula, also called line-angle formula or shorthand formula, of an organic compound is a type of molecular structural formula that serves as a shorthand representation of a molecule's bonding and some
Answer:
The skeletal formula, also called line-angle formula or shorthand formula, of an organic compound is a type of molecular structural formula that serves as a shorthand representation of a molecule's bonding and some details of its molecular geometry.
Explanation:
hope this helps
What is known as the amount of
mass in a given volume?
Answer:
Density
Explanation:
Density is a measure of how much mass is contained in a given volume
Which ion forms the strongest ionic bond with a given anion?
Answer:
Explanation:
A cation with a 2+ charge will make a stronger ionic bond than a cation with a 1+ charge. A larger ion makes a weaker ionic bond because of the greater distance between its electrons and the nucleus of the oppositely charged ion.
Please help!!!
True or False: A physical property is a property of a substance that can be observed or measured without changing the chemical identity of the substance.
True? Or False?
Answer:True
Explanation:
Can someone hel me On these questions please
Answer:
B, A, A
Explanation:
how many atoms are in 26g of cobalt
What is the formula mass of NaCl?
Answer:
The molar mass of sodium is 22.990 g/mol.
The molar mass of chlorine is 35.45 g/mol.
To calculate the molar mass of NaCl, we need to multiply the subscript of each element times its molar mass, then add them together. In this case since there is no subscript, it is understood to be
( 1 × 22.990 g/mol ) + ( 1×35.45 g/mol ) = ?
22.990 g/mol + 35.45 g/mol = ?
58.44 g/mol = ?
Hope this helped!
Have a supercalifragilisticexpialidocious day!
what does mechanical digestion mean ?
Answer:
Explanation:
Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion. The role of chemical digestion is to further degrade the molecular structure of the ingested compounds by digestive enzymes into a form that is absorbable into the bloodstream.
Write the balanced equation for the following.
Answer:
it forms copper hydroxide crystals
Explanation:
NaOH(aq)+CuSO4(aq)=Cu(OH)2(s)+Na2SO(aq)
Which pair best represents a metallic bond?
A. carbon and oxygen two
B. hydrogen atoms two
C. gold atoms
D. sodium and chlorine
Answer:
C. gold atoms
Explanation:
Metallic bonds are found between atoms of metals. Since gold is the only metal given here, it is the solution to the problem.
Metallic bonds join atoms of metals and alloys together.
The formation of this type of bond is favored by large atomic radius, low ionization energy and a large number of electrons in the valence shell.
The metallic bond is actually an attraction between the positive nuclei of all the closely packed atoms in the lattice and the electron cloud jointly formed by all atoms losing their outermost shell electrons.
what does group 16 (oxygen family) have in common
Answer: here is your answer
Explanation:
The oxygen family consists of the elements that make up group 16 on the periodic table: oxygen, sulfur, selenium, tellurium, and polonium. These elements all have six electrons in their outermost energy level, accounting for some common chemical properties among them.
Answer:
they all have 6 valence electrons
Explanation:
all elements in group 16 have 6 valence electrons
What are the parts to the ocean system?
Answer:
Although the ocean is one continuous body of water, oceanographers have divided it into four principal areas: the Pacific, Atlantic, Indian, and Arctic Oceans.
Answer:
Some parts to the ocean systems are....
1.) Saltmarsh
2.) Mangroves
3.) Mudflats
4.) Lagoons,
5.) Coral Reefs,
6.) Barrier Islands,
7.) Estuaries,
8.) The Ocean Floor,
9.) The Deep Sea
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Lithium Nitride is a ionic bonded compound because?
9. Which of the following concentrations has units of moles of solute per liter of solution?
a. molarity
b. mass percent
e. parts per million
d. mole fraction
A compound is determined to have the empirical formula C2OH4. If the molar mass of the compound is 132 g/mol, determine the molecular formula of the compound.
Answer: The molecular formula will be [tex]C_6O_3H_{12}[/tex]
Explanation:
Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.
Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.
Empirical weight of [tex]C_2OH_{4}[/tex] is [tex]12\times 2+16\times 1+1\times 4=44g[/tex]
Molecular mass of compound is = 132 g
Now we have to calculate the molecular formula.
[tex]n=\frac{\text{Molecular weight}}{\text{Equivalent weight}}=\frac{132}{44}=3[/tex]
The molecular formula will be=[tex]3\times C_2OH_4=C_6O_3H_{12}[/tex]
True or False (+2 Points Possible each): Write true if the statement is true. If false, replace
the underlined word with the correct word in the space provided.
1. Radiation is the transfer of energy through space.
2. Molten rock rises in Earth's mantle caused by gravity.
3. Fossils provide evidence of sea-floor spreading.
4. Older, denser Earth material sinks below younger material
known as subduction.
5. Convergent boundaries
move plates towards each other
mountains.
is
forming
PLEASE HELP ASAP THIS IS DUE BY MIDNIGHT!
Answer:
2. Molten rock rises in Earth's mantle caused by (pressure)
Explanation:
i think i just had a similar question
0. Earth's rock is continually cycling through different states and locations. The diagram below shows the rock cycle. The labels for two processes are missing.
Weathering of
ROCKS at surface
IGNEOUS
ROCK
Uplin
SEDIMENTARY ROCK
METAMORIHIC ROCK
Melting
Which of these processes could be happening at the stage labeled 2?
o folding and mountain building
chemical changes due to heat and pressure
compaction and cementation of weathered sediments
subduction of an oceanic plate beneath a continental plate
Answer:
Chemical changes due to heat and pressure
Explanation:
Just took the test, hope this helps! :)
Answer:
Chemical changes due to heat and pressure
Explanation:
I took this test and got a 100%! :D