Answers
Answer:
26.74g
Explanation:
The equation of the reaction is;
SIO₂ + 3C --> SiC +2CO
From the balanced equation, the relationship between SiC and C is;
3 mol of C produces 1 mol of SiC
Converting mol to mass using; Mass = moles * Molar mass
Mass of SiC = 1 mol * 40.11 g/mol = 40.11g
This means;
3 mol of C produces 40.11g of SiC
2 mol of C produces xg of SiC
3 = 40.11
2 = x
x = 2 * 40.11 / 3 = 26.74g
Related Questions
if input energyis 100J and useful is 70J what is the waste energy
Answers
Answer:
waste energy = 30 J
Explanation:
Given that.
Input energy = 100 J
Useful energy = 70 J
We need to find the amount of waste energy.
Waste energy = total energy - used energy
= 100 J - 70 J
= 30 J
Hence, 30 J of energy is waste energy.
Please help me with this
Answers
The double replacement reaction
Further explanationGiven
Reaction if Na₂S + HCl
Required
Type of reaction
Solution
The double replacement reaction occurs when there is a displacement of the cations and anions of the reactants involved in the reaction to form two new compounds.
The general formula for this reaction :
AB + CD ⇒ AD + CB
At the bottom of the reaction, it is shown the number of atoms of each compound in the reactants and products which indicates the application of the law of conservation of mass, that the number of atoms in the reactants will be the same as the number of atoms in the product, so the reaction is said to be in a balanced state.
What is the graph of the orange line and is it a positive or negative connotation
Answers
Answer:
Positive
Explanation:
4. The representative particle for an ionic compound is a
Answers
Answer:
unit formula??
Explanation:
Which type of wave is shown in the image?
Answers
The type of wave is shown in the image is transverse wave and the correct option is option B.
What are Transverse waves?A transverse wave is a wave in which particles of the medium vibrate at right angles, or perpendicular, to the direction that the wave travels.
Transverse waves commonly occur in elastic solids, oscillations, in this case, are the displacement of solid particles from their relaxed position, in the direction perpendicular to the propagation of the wave.
Transverse waves can travel through empty space as electromagnetic waves or be mechanical waves.
Therefore, The type of wave is shown in the image is transverse wave and the correct option is option B.
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EZ POINTS!!!
what are 3 physical changes of wood.
Answers
Categorize the following reaction: C3H8 + O2 ---> CO2 + H2O *
Synthesis Reaction
Combustion Reaction
Replacement Reaction
Decomposition Reaction
Answers
Answer:
it is a replacement reaction
A box is 1 m high, 2.5 m long, and 1.5 m wide, its volume is 5 mº.
true or false
Answers
Answer:
false
Explanation:
Because volume is in m3
Answer:
False
Correct answer: 3.75m³
Explanation:
Given parameters:
Height of box = 1m
Length of box = 2.5m
Width of box = 1.5m
Unknown:
Volume of the box = ?
Solution:
The volume of the box is given as:
Volume = length x height x width
Volume = 2.5 x 1 x 1.5
Volume = 3.75m³
If 213 J raises a sample of water 8.2°C, what is the mass of the water?
A. 0.16 g
B. 6.2 g
C. 51 g
D. 26 g
Answers
Answer:
the answer is B, 6.2 Grams
Answer: B. 6.2 g
Explanation:
A p e x
What happens to electrons during covalent bonding?
A. They are given up by atoms.
O B. They are shared between atoms.
C. They are transferred between atoms.
OD. They are taken in by atoms.
Answers
True or false: Atoms and mass are conserved in nature
True
False
Answers
Answer:
It’s true
Explanation:
If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system. ... The Law of Conservation of Mass holds true because naturally occurring elements are very stable at the conditions found on the surface of the Earth.
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Where is located the element with the electron
configuration [Kr] 5s? in the periodic table?
Pop se7419 Ford
19725 74
B - In period 5 and group 10
C - In period 4 and group 10
D - In period 5 and group 12
Answers
Please help
Sorry I need 20 characters to submit this Answer that’s why I’m adding more words
All of the following statements are true except:
Schist is an example of metamorphic rock.
Metamorphic rocks are formed under heat and pressure.
All metamorphic rocks come from parental rocks.
Metamorphic rocks can also be formed in ocean floors.
Answers
Answer:
Metamorphic rocks can also be formed in ocean floors.
Explanation:
The ocean floor is made up predominantly of basalts and are derived by the cooling an solidification of magma in this environment.
The ocean floor is made up primarily of igneous rocks and some sediments that have been deposited from the surface. Also, materials from deep within the subsurface can reach the ocean floor where they cool and solidify to form igneous rocks. Schists are examples of metamorphic rocks as well as gneiss.Answer: a is incorct
Explanation:
8. An element that has strong intermolecular forces is most likely to have:
•a boiling point below room temperature
•a melting point below room temperature
•a boiling point very close to its melting point
•a very high melting point
Answers
Answer:
a very high melting point answer
1. Use electron dot structures to predict the formula of the ionic compounds formed when the following elements
combine.
Answers
In the reaction below, how would adding more of product C affect the equilibrium of the
system?
A + B 2 C + D (2 points)
VE
Shift it to the right toward the products.
M
Shift it to the left toward the reactants.
Pr
Equally create more products and reactants.
Da
Ро
It would have no effect.
Answers
Answer:
Shift it to the left toward the reactants
Explanation:
The direction of movement of a reaction at equilibrium has been explained by a man called HENRY LOUIS in his principle. According to this principle, a reaction will shift in response to a stress on equilibrium. The stress can either be effects of temperature, pressure, concentration etc on the reaction equilibrium.
- An addition of a reactant or product will cause the reaction to shift towards the opposite direction of the substance added. For example, in this question, the following reaction was given:
A + B ----> C + D
C is a product, meaning that if more of product C were added to this reaction, the reaction will shift towards the left (reactant side) because there are now more products. In other words, the reactants will be favored if there is an increase in the concentration of the products.
How many moles of Cu2S can be formed from 11 moles of HCl?
Answers
Answer:
hi
Explanation:
hi
A balanced chemical equation is a direct presentation of the ___________.
law of conservation of momentum
law of conservation of energy
law of conservation of mass
ideal gas law
Answers
The law of conservation of mass is directly represented in a balanced chemical equation.
What is the law of conservation of mass?In chemistry, the law of conservation of mass says that in a closed or isolated system, matter cannot be created or destroyed in a chemical reaction.
For example: If we burn wood, the mass of ashes and gases is equal to the mass of wood before burning.
Thus, the Law of conservation of mass represent a balanced chemical equation.
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Which is a characteristic of all ions?
They are metals.
They have a charge.
They are made of two or more types of atoms.
They form chemical bonds through electron sharing.
Answers
Answer:
D. They form chemical bonds through electron sharing.
Explanation:
The correct characteristic of all ions is that they have a charge. Therefore option B is correct.
An ion is an atom or a molecule that has gained or lost electrons, resulting in an unequal number of protons and electrons. This imbalance of positive and negative charges gives the ion a net electrical charge.
Ions can have a positive charge (called cations) if they have lost electrons, or a negative charge (called anions) if they have gained electrons.
The charge of an ion is essential in determining its behavior and interactions with other ions and molecules. It influences the way ions form chemical bonds and participates in chemical reactions.
The charge of an ion is indicated by a superscript after the chemical symbol, such as Na+ for a sodium cation or Cl- for a chloride anion.
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How do you write the formula for a compound made from Fe 3+ and OH -1 ions?
a: FeOH
b: Fe3OH
c: FeOH3
d: Fe (OH)3
Answers
You need one Fe and three OH
Give reasons
has valency
Magnesium
two
a
Answers
Answer:
Magnesium has valency equal to 2 +
Explanation:
because the electronic configuration of Mg is [2,8,2]. The nearest noble gas to magnesium is neon with electronic configuration of [2,8], to achieve this stable electronic configuration Mg can lose 2 valence electrons, hence its valency is 2 + .
Jake has a book, a ruler, and a balance.
Answers
Answer:
The triple-beam balance can determine the weight, the ruler can be used to measure the length, width, and height of the book then multiply all by 3
Explanation:
How many moles would be equal to 22.4 g of CO2?
Answers
Answer:
Number of moles = 0.51 mol
Explanation:
Given data:
Mass of CO₂ = 22.4 g
Number of moles = ?
Solution:
Number of moles of CO₂:
Number of moles = mass/molar mass
Molar mass of CO₂ = 44 g/mol
by putting values,
Number of moles = 22.4 g/ 44 g/mol
Number of moles = 0.51 mol
How does energy change matter?
Answers
Answer:
Adding or removing energy from matter causes a physical change as matter moves from one state to another. For example, adding thermal energy (heat) to liquid water causes it to become steam or vapor (a gas). And removing energy from liquid water causes it to become ice (a solid).
Explanation:
Your welcome
Example : adding thermal energy to liquid water causes it to become steam or vapor ( a gas ) and removing energy from liquid water causes it to become ice (a solid).
Identify each of the following as an example of either basic research, applied research, or
technological development:
a.) a new type of refrigerant that is less damaging to the environment is developed.
PLEASE HELP!!
b.) a new element is synthesized in a particle accelerator.
c.) a computer is redesigned to increase the speed of the computer.
Answers
Answer:
A) a new type of refrigerant that is less damaging to the environment is developed. Applied development
B) a new element is synthesized in a particle accelerator. Basic development.
C) a computer is redesigned to increase the speed of the computer. Technological development.
Explanation:
what volume will 10. grams of ammonia occupy
Answers
Answer: 13.11L
Explanation:
17 g = 22.4 L
10g = 13.11 L
how to find gram molecular mass
Answers
Answer:looks for it
Explanation:
explain why the sun will not explode at any point in its life cycle
Answers
Answer:
i no now dethankyou
Explanation:
A scientist wants to determine how many gallons of milk the children at her son's elementary school drink per week. She sends out a survey (with approval by the school) and
takes data on how many gallons of milk each student says they drink. What are the independent and dependent variables?
Answers
children: independent variable
Which of the following questions can be answered by science?
a. Are mind, body, and soul related to one another?
b. Are physical and chemical changes a part of nature?
с. Does studying science have better prospects than studying history?
d. Does philosophy provide a link between science and religion?