Answer:
Na2S + 2HCl -------------------> 2NaCl + H2S.
2NaCl --------------------------> 2Na + Cl2
Na2S + 2HCl ---------------> 2NaCl + H2S
Explanation:
Stoichiometry Is one of important aspect of Chemistry that will be taught to student learning chemistry. It shows the relationship between the reactants and the product. For instance, the amount a reactant reacts to form the products and the amount of products formed.
The balanced chemical reaction for the equation of reaction given in the question is given below;
Na2S + 2HCl -------------------> 2NaCl + H2S.
One mole of Na2S reacts with 2 Moles of HCl to produce 2 moles of NaCl and one mole of H2S.
2NaCl --------------------------> 2Na + Cl2
Two moles of NaCl breaks down into 2 moles of Sodium(solid) and one mole of Chlorine.
Na2S + 2HCl ---------------> 2NaCl + H2S
One mole of N2S reacts with 2 moles of HCl to produce 2 moles of NaCl and one mole of H2S.
How many atoms are in 3C12H22O11
What is the empirical formula of a compound if a sample contains 8.52 grams of carbon and 1.42 grams of hydrogen
Answer:
CH2
Explanation:
If the fuel had a mass of 2g,
how much heat energy does
each gram of fuel release?
Answer:
Explanation:
Worked example – calculating energy per gram of fuel
Energy given out = mass of water × 4.2 × temperature change.
Energy measured in joules, J.
4.2 is the specific heat capacity of water, J/g°C.
Temperature change = temperature of water after heating – temperature of water before heating.
BRAINLY PLZ
Is MgS ionic or covalent
Answer:
Ionic
Explanation:
Mg has 2 electron in it's outermost orbit, by donating this two electron to Sulfur it get stable mg 2+ electronic configuration while sulfur has 6 electron in it's outermost shell ,so sulfur accept this 2 electron and complete it's octet and become s2–.
I DONT NEED HELP JUST GIVING YOU GUYS THE ANSWER I TOOK THE TEST! Which statement explains how two gases at the same temperature can diffuse at different rates?
They have different molar masses but the same velocities.
Their average kinetic energies are the same, but the smaller molecules have faster velocities.
Their kinetic energies differ, but their masses are the same.
They have the same masses but different velocities.
The answer is: Their average kinetic energies are the same, but the smaller molecules have faster velocities.
The average kinetic energies of gas molecules are the same, but the smaller or lighter molecules have more velocities. Therefore, option (B) is correct.
What is average kinetic energy?The average kinetic energy of a molecule can be described as:
[tex]{\displaystyle K.E.=\frac{3}{2}kT[/tex]
Where T is temperature (K) and k is Boltzmann constant.
All molecules of a gas are identical in mass and size but they differ from gas to gas. The gas molecules are separated by large distances so that the real volume of the molecules is negligible as compared to the total volume.
The force of attraction between molecules is negligible and molecules are supposed to be moving in different directions with different velocities. The collision between gas molecules is perfectly elastic so that no energy is wasted during a collision.
Since gas molecules are moving at different velocities ao they possess different kinetic energies. The average kinetic energy is directly proportional to the temperature (Kelvin).
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what is the formula name for Co3N2
Answer:
Cobaltous Nitride,I think so anyway.......
The formula name for [tex]Co_{3}N_{2}[/tex] is cobalt(II) nitride.
In the compound [tex]Co_{3}N_{2}[/tex], the Co represents the chemical symbol for cobalt, and the N represents the chemical symbol for nitrogen. The subscript numbers indicate the ratio of atoms present in the compound.
To name the compound, we determine the charge of the cobalt ion based on the ratio of cobalt and nitrogen atoms. In this case, since there are three cobalt atoms and two nitrogen atoms, each cobalt atom has a 2+ charge.
Therefore, the correct name for [tex]Co_{3}N_{2}[/tex] is cobalt(II) nitride. The Roman numeral II is used to indicate the cobalt ion's charge.
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How many plates is Earth made up of?
also this is science not chemistry I just couldn't find a science
Answer:
seven
Explanation:
There are major, minor and micro tectonic plates. There are seven major plates: African, Antarctic, Eurasian, Indo-Australian, North American, Pacific and South American. The Hawaiian Islands were created by the Pacific Plate, which is the world's largest plate at 39,768,522 square miles.
Air is a ________ mixture??
Balance HSO4 + ClO3 = HCl + SO3 + OH + O2
Answer:
why was my answer deleted, was it wrong?
Explanation:
c. How many grams of NH3 react completely with 75.0 grams of PbO?
Answer:
3.81 g NH3
Explanation:
friends with chemist
(2.22 x 10^6cm) x (5.5 x 10^-5m) answer in scientific notation.
Answer:
12.21 x 10⁻¹ m
Explanation:
Given:
(2.22 x 10⁶cm) x (5.5 x 10⁻⁵m)
Find:
Solution;
Computation:
(2.22 x 10⁶cm) x (5.5 x 10⁻⁵m)
[2.22 x (10⁶/100)m] x (5.5 x 10⁻⁵m)
[2.22 x 10⁴m] x (5.5 x 10⁻⁵m)
12.21 x 10⁻¹ m
1. Any gentle wind is called a
It's called a breeze
GIVING THE BRAINLIEST
When hair sticks to your comb as it is being combed, this is a result of
a. charging by friction
b. charging by conduction
c. charging by induction
d. grounding
The correct answer is A. Charging by friction
Explanation
When someone rubs a comb with their hair when they are combing it and the hair sticks to the comb occurs a phenomenon called electrization, in which a neutral body becomes charged or loses an electrical charge (electrons). One way that electrization occurs is through the rubbing of two neutral bodies which causes one to be positively charged and the other negatively causing them to attract each other by magnetism. Therefore, the correct answer is A. Charging by friction
Sodium (Na) is a highly reactive element. Which characteristic of sodium is responsible for
its reactivity?
A. It has 11 protons.
B. Its atomic mass is 22.990.
C. It is a non metal.
D. It has one valance electrons.
Answer:
D. It has one valence electron is Answer.
Explanation:
I hope it's helpful!
Compare and contrast a neutral atom and an ion.
Answer:
Atoms are neutral. They contain the same number of protons and electrons. An ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion.
Explanation:
Hope this helped
Write the Formulas for these ionic compounds:
1) Tin(IV) oxide
2) Aluminum oxide
3) Silver sulfide
4) Copper (II) sulfate
5) Potassium carbonate
Answer:
1. Tin(IV) oxideTin(IV) oxide, also known as stannic oxide, is the inorganic compound with the formula SnO₂. The mineral form of SnO₂ is called cassiterite, and this is the main ore of tin. With many other names, this oxide of tin is an important material in tin chemistry. It is a colourless, diamagnetic, amphoteric solid.
Formula: SnO₂
Molar mass: 150.71 g/mol
Melting point: 1,630 °C
Density: 6.95 g/cm³
2. Aluminum oxideAluminium oxide is a chemical compound of aluminium and oxygen with the chemical formula Al₂O₃. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium(III) oxide.
Formula: Al₂O₃
Molar mass: 101.96 g/mol
Melting point: 2,072 °C
Density: 3.95 g/cm³
Boiling point: 2,977 °C
ChemSpider ID: 14086
ChemSpider ID: 26988
3. Silver sulfideSilver sulfide is an inorganic compound with the formula Ag ₂S. A dense black solid, it is the only sulfide of silver. It is useful as a photosensitizer in photography. It constitutes the tarnish that forms over time on silverware and other silver objects.
Formula: Ag2S
Molar mass: 247.8 g/mol
Density: 7.23 g/cm³
ChemSpider ID: 145878
4. Copper (II) sulfateCopper(II) sulfate, also known as copper sulphate, are the inorganic compounds with the chemical formula CuSO₄ₓ, where x can range from 0 to 5. The pentahydrate is the most common form. Older names for this compound include blue vitriol, bluestone, vitriol of copper, and Roman vitriol.
Formula: CuSO4
IUPAC ID: Copper(II) sulfate
Molar mass: 159.609 g/mol
Density: 3.6 g/cm³
Melting point: 110 °C
Soluble in: Water
5. Potassium carbonatePotassium carbonate is the inorganic compound with the formula K₂CO₃. It is a white salt, which is soluble in water. It is deliquescent, often appearing as a damp or wet solid. Potassium carbonate is mainly used in the production of soap and glass.
Formula: K2CO3
Molar mass: 138.205 g/mol
IUPAC ID: Potassium carbonate
Density: 2.43 g/cm³
Melting point: 891 °C
Soluble in: Water
Explanation:
Hope it is helpful....
Give examples of:
chemical reactions in the kitchen.
• chemical reactions in living things.
chemical reactions in the kitchen
Baking soda and vinegar create carbon dioxide. In both of these cases, a chemical reaction between a solid and liquid creates a new substance, a gas. Both yeast and baking soda can be used to create a gas.
chemical reactions in living things
when you hard boil an egg, the hydrogen sulfide produced by heating the egg white can react with iron from the egg yolk to form a grayish-green ring around the yolk.
A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over
the next few minutes?
A. Molecules in both the metal and the surrounding air will start moving at lower speeds.
B. Molecules in both the metal and the surrounding air will start moving at higher speeds.
C. The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up.
D. The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down
Two cars that are identical except for their color are traveling on the same road.
The red car is traveling at a speed of 78 km/hr, and the blue car is traveling at a speed of 106 km/hr. Which of the following statements is true?
A.
Neither car has any kinetic energy.
B.
The blue car has more kinetic energy than the red car.
C.
The cars have the same kinetic energy.
D.
The red car has more kinetic energy than the blue car.
Identify the type of reaction and the products. Ba+O2 ->
Answer:
Explanation:
The is barium and oxygen in here
barium+ oxygen-> barium oxide
barium + oxygen -> barium peroxide
Convert 5.00 moles of carbon to grams. Be sure to report your answer with the correct significant figures.
1 moles Carbon to grams = 12.0107 grams
2 moles Carbon to grams = 24.0214 grams
3 moles Carbon to grams = 36.0321 grams
4 moles Carbon to grams = 48.0428 grams
5 moles Carbon to grams = 60.0535 grams
6 moles Carbon to grams = 72.0642 grams
7 moles Carbon to grams = 84.0749 grams
8 moles Carbon to grams = 96.0856 grams
9 moles Carbon to grams = 108.0963 grams
10 moles Carbon to grams = 120.107 grams
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 60g is the mass of 5.00 moles of carbon.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically, the formula for mole can be given as
mole of carbon =given mass of carbon ÷ molar mass of carbon
number of mole of carbon= 5.00 moles
mass of carbon=?
molar mass of carbon= 12.0107 grams
Substituting the values in above formula we get
5.00 moles = mass of carbon ÷12.0107 grams
On calculations, we get
mass of carbon =60g
Therefore, 60g is the mass of 5.00 moles of carbon.
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What is the total number of electrons in all three
P
orbitals if
they are completely filled?
Answer:
C. Six
Explanation:
one filled p orbital holds 2 electrons, so if there are 3 p orbitals there are 6 electrons total.
how many moles of Mg is 3.5 x 10^27 atoms of Mg
mmg mmñm
Explanation:
no lo seeee123456789
What is the ph value of neutral substance
Answer:
Acidity and alkalinity are measured using a pH scale, for which 7.0 is neutral. The lower a substance's pH (less than 7), the more acidic it is; the higher a substance's pH (greater than 7), the more alkaline it is. Average rain has a pH of about 5.6; it is slightly acidic because carbon dioxide (CO2) dissolves into it, forming weak carbonic acid. Acid rain usually has a pH between 4.2 and 4.4. The most common nitrogen-related compounds emitted into the air by human activities are nitrogen oxides. Ammonia is another nitrogen compound emitted into the atmosphere, primarily from agricultural activities and fossil fuels. Most of the nitrogen oxides released in the U.S. due to human activity are from the burning of fossil fuels associated with transportation and industry.
Explanation:
Different substances are made from different ____________ which interact with water in different ways.
Answer: atoms/molecules
Explanation:
what is the ratio of hydrogen(H) to oxygen(O) in hydrogen peroxide(H2O2)?
A 1:1
B 2:2
C 1:2
Answer: 2:2 but if simplified it’s 1:1
Explanation:
alkanes,
General Formula: C, H 2n+2
Carbon Names Molecular Formula
C2H6
Ethane
Unknown No. of
Carbon (n)
Ex. If n= 2
1.If n = 4
2. If n= 5
3. If n = 7
4. If n = 8
5. If n= 9
Firstly ALKANES FORMULA IS CnH2n+2
C4H10 Butane
C5H12 Pentane
C7H16 Hectane
C8H18 Octane
C9H20 Nonane
Sand dunes are large piles of of sand that can be found in the dessert. What causes these sand dunes to form
A. Ice
B. Wind
C. Earthquakes
D. Volcanoes
mg+o2 balanced eaquation
Answer:
2Mg+O2=2MgO
balanced equation
hope it helps.
Answer:
Oroduct is mgo and it is balanced equation
Because both MG and o² have valence 2
This reaction supports the Law of Conservation of Mass (hint: is the equation balanced?):
2KOH ® K20 + H2O True or
False
Answer:
False
Explanation:
Left:
K = 2 atoms
O = 1 atoms
H = 1 atoms
Right:
K = 2 atoms
O = 1 atoms
H = 2 atoms
O = 1 atoms
As you can see both sides do not have the same amount of atoms, therefore it is not balanced.
Hope this Helps!!:)