Answer:
3Pb + 2H3PO4 —> 3H2 + Pb3(РO4)2
Explanation:
Pb + H3PO4 —>Н2 + Pb3(РO4)2
In order to balance the equation you must look at the number of elements already in the equation.
We see, on the left side, that:
Pb = 1, H = 3, P = 1, and O = 4
We see, on the right side, that:
Pb = 3, H = 2, P = 2, and O = 8
Our goal is to balance these numbers so that they are equal. This is because of the law of conservation of matter states that "the amount of matter stays the same, even when matter changes form".
We cannot change the subscripts, so we add coefficients.
3Pb + 2H3PO4 —> 3H2 + 1Pb3(РO4)2
Now, on the left side:
Pb = 3, H = 6, P = 2, and O = 8
And, on the right side:
Pb = 3, H = 6, P = 2, and O = 8
So, the balanced equation is: 3Pb + 2H3PO4 —> 3H2 + Pb3(РO4)2
*I hope that this helped you. Have a great day & good luck!
PLZ HELP MEEE PLZ WILL GIVE BRAINLIEST PLZ!
Explain the difference between naming an ionic compound and a covalent (molecular) compound.
Answer:
The main difference between the Ionic and Covalent Compounds is the methodology of formation. One of the atoms in the bond shall lose an electron to initiate the bond to form an ionic compound while the Covalent compound is formed by sharing the electrons among the atoms.
Explanation:
How many milliliters of 0.550 M hydrochloric acid are needed to react with 10.00 mL of 0.217 M CSOH?
A. 3.95 mL
B. 0.253 mL
C. 0.0395 mL
D. 25.3 mL
Answer:
D
Explanation:
D is the answer lolyeshsjs
how many molecules are in 100 grams of ammonia
Answer:
17.03052 or 17 for a whole number
Explanation:
3. Roger ran 50 meters to the left, turned around and ran 100 meters to the right, and then turned around once more and ran 10 meters to the left. Determine his total displacement and distance traveled from the starting point.
Answer:
Distance=160 meters, Displacement = 40 meters right
Pls help! Urgent!
The law of conservation of mass states that the mass of the reactants is _____
the mass of the products.
A. Less than
B. Equal to
C. Greater than
Answer:
c
Explanation:
Answer:
b. equal too
Explanation:
According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants
How much heat energy is required to raise the temperature of 386 grams of aluminum from 24.0°C to 100.0°C?
Answer:
is there no options?
Explanation:
Answer:
26.314KJ
Explanation:
The specific heat capacity formula is : [tex]Q=mc[/tex]Δ[tex]T[/tex], where Q is the heat energy, m is the mass, c is the heat capacity of the material, and delta T is the change in temperature.
We know from the question that m = 386grams and delta T = 100.0°C - 24.0°C = 76.0°C. From a simple search, we know the specific heat capacity of aluminum = 0.897J/g°C (this changes a little bit depends on the website you use, but the value should be very similar). Let's apply the formula:
[tex]Q=mc[/tex]Δ[tex]T[/tex]
[tex]Q = 386g (0.897J/gC)(76.0C)[/tex]
[tex]Q = 26314J[/tex] or [tex]26.314KJ[/tex]
Round according to your teacher's specification (example: significant figures) if needed.
What happens in an oxidation half-reaction?
ОА. .
Elements gain electrons.
OB.
Elements lose electrons.
Ос. .
Oxygen is added.
OD. Oxygen is lost.
Answer:
Elements lose electrons.
Explanation:
where does mechanical digestion occur and chemical digestion occur in the body
Answer:
Mouth
Explanation:
Both mechanical and chemical digestion occur in the mouth. Teeth grind and break up food (mechanical), while an enzyme in saliva called amylase begins to break down carbohydrates (chemical). After it is swallowed, the chewed food (now called a bolus) moves down the esophagus.
Hope this helps! :)
The relationship between the endoplasmic reticulum and the Golgi complex is most similar to which of these examples? A a factory that creates a product and the shipping department that delivers it to customers B a farmer who grows food and people who cook and eat that food in different ways C a bus that picks up passengers and the passengers who get out at different stops D a power plant that makes electricity and the town that uses it to light their houses
Answer: Answer is A
Explanation:
The endoplasmic reticulum and the Golgi complex together make the endomembrane system. They are like factory and shipping departments. thus, option A is correct.
What are the endoplasmic reticulum and the Golgi?The endoplasmic reticulum (ER) is the membrane-bounded organelle that is a network-like structure that even has ribosomes attached to it (RER). They are the site of lipid and protein synthesis in the eukaryotic cell.
Golgi on the other hand, are organelle present in the cytoplasm that is the site of the packaging, storage, and transportation of the lipids produced by the ER to the other sites or out of the cell.
The endoplasmic reticulum act as a factory that manufactures lipids and proteins, whereas the Golgi act as a shipping department that packs and transports the molecules in vesicles to various sites.
Therefore, option A. ER acts as the factory and Golgi as the shipping department.
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How can moisture in storms from Hawaii reach California?
Answer:
Atmospheric Rivers a.k.a. The pineapple Express
You start with 1 L of CO2 at standard temperature and pressure in a closed container. If you raise the temperature of the gas, the pressure will
Increase
Remain the same
Decrease
Answer:
Increase
Explanation:
According to Gay-Lussac Law,
The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.
Mathematical relationship:
P₁/T₁ = P₂/T₂
If the initial temperature and pressure is standard,
Pressure = 1 atm
Temperature = 273.15 K
then we increase the temperature to 400.0 K, The pressure will be,
1 atm / 273.15 K = P₂/400.0K
P₂ = 1 atm × 400.0 K / 273.15 K
P₂ = 400.0 atm. K /273.15 K
P₂ = 1.46 atm
Pressure is also increase from 1 atm to 1.46 atm.
Help me with this pls
A gas has a volume of 1.50mL at 1.89atm. What is the volume when the pressure is 2.75atm? What is the name of the gas law used to solve this problem?
Explanation:
.........................:)
The final volume of the gas at the final pressure can be determined using Boyle's law. The volume of the gas at a pressure of 2.75 atm is 1.03 ml.
What is Boyle's law ?Boyle's law states that, at constant temperature, the volume of a gas is inversely proportional to the pressure of the gas.
Hence, PV = a constant.
Let P1 and V1 be the initial pressure and volume and P2 and V2 be the final pressure and volume then we can write it as,
P1 V1 = P2 V2.
Given that, P1 = 1.89 atm
P2 = 2.75 atm
V1 = 1.50 ml
V2 = P1 V1 / P2
V2 = 1.89 atm × 1.50 ml/ 2.75 atm
= 1.03 mL.
Therefore, the volume of the gas at a pressure of 2.75 atm is 1.03 ml.
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3.5mL converted to cm
Answer:
3.5 cubic centimeters
Explanation:
can someone help me plz
Apsidal precession—The major axis of Moon's elliptical orbit rotates by one complete revolution once every 8.85 years in the same direction as the Moon's rotation itself.
use the periodic table to determine the molar mass of each of the following elements. Use the correct number of significant figures. Potassium
Answer: Potassium is 39.10 g/mol
Explanation: The numbers below the element are the molar mass.
Answer: Potassium(K): 39.10 g/mol
Explanation:
Which two organ systems work together to provide cells with oxygen and to remove carbon
dioxide from the body?
(5 Points)
Answer:
Lungs
Explanation: The two organ systems that work together to provide the cells with oxygen and remove carbon dixoide from the body are the lungs.
Circulatory system and Respiratory system work together to provide cells with oxygen and to remove carbon dioxide from the body. So, the correct options are (C) and (D).
What is Respiratory System ?Respiratory system is a biological system which consists of specific organs and structures. It helps to breathe. It consists of lungs, airways, blood vessels and some muscles with work together with lungs are also the part of Respiratory system. It helps to move out the oxygen throughout the body and helps to remove the carbon dioxide from the body.
Functions of Respiratory System:
1. It allows to smell
2. It delivers oxygen to the cell
3. It removes carbon dioxide from the body.
4. It protects the airways from the harmful substance.
The respiratory system has many different parts that work together to help you breathe. It includes:
1.Mouth and nose
2. Sinuses
3. Pharynx (throat)
4. Trachea (Windpipe)
5. Bronchial tubes
6. Lungs
Thus, Circulatory system and Respiratory system work together to provide cells with oxygen and to remove carbon dioxide from the body. So, the correct options are (C) and (D).
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Convection currents are driven by differences in?
•Mass
•Volume
•Density
•Weight
Answer:
Density
Explanation:
The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: {\displaystyle \rho ={\frac {m}{V}}} where ρ is the density, m is the mass, and V is the volume
Answer: Density
Explanation: Convection usually happens when an object heats up, which causes its density to change, such as a lava lamp.
When the wax in a lava lamp heats up, the wax's density decreases due to the energy from the heat, causing it to rise in the liquid to the top, where it cools down and becomes more dense, then falls back to the bottom.
Is paper a pure substance or a mixture and is it an element or compound then is it homogenous or heterogenous Thank you!!
Explain how self heating cans work
Answer:
when two substances come together to create heat.
Explanation:
there have to be something to create heat.
Write Four Facts About COMPOUNDS:
A rigid cylinder contains a sample of gas at STP. What is the pressure of this
gas after the sample is heated to 500 K in atm?
Answer:
1.5 atm
Explanation:
15. Name one benefit and two risks of nuclear power (3)
Benefit:
Risk 1:
Risk 2:
Plss anwser all I’m doing a test
Answer:
good: We can reuse the fuel from nuclear energy projects.
bad 1: There is always the threat of an accident when working with nuclear energy
bad 2: Exposure to nuclear materials or uranium can create health problems
Explanation:
Answer:
benefits: lots of energy produced from small amounts of uranium it also does not pollute the air
risks: A nuclear power accident can make an entire region unlivable, have a negative effect on the environment for years to come, kill thousands of people, create a spike of cancer rates within nearby communities, kill off endangered fish populations (depending on their location), destroy local food supplies, etc.
Nuclear energy can also be turned into explosive devices that can be used to create powerful yields Nuclear energy creates harmful waste. Nuclear energy burns cleanly, which is seen as an advantage. It also creates radioactive waste that is toxic to the environment and dangerous to humans. If this waste is not disposed of properly, then the damage it causes may last for hundreds, if not thousands, of years. In the United States, damages that are directly associated with the storage of nuclear waste materials is estimated to be at least $38 billion. Politico reports that the costs could be as high as $65 billion.
Explanation:
Can someone please help me with this quickly thank you
What are some possible replacements for Tin (Sn)?? Help ASAP!!!!!!!!
Answer:
Lead I think is one I'm not completely sure but I know they're similar in some ways
Which of the following statements is incorrect:
a.When the combustion of a reactant that contains carbon occurs, carbon dioxide will be one of the products
b.A combustion reaction is a reaction where diatomic oxygen is a product
c.A combustion reaction can easily be balanced by saving the oxygen’s for last
d.When the combustion of a reactant that contains nitrogen occurs, diatomic nitrogen will be one of the products
Answer:
the answer is c I believe
To solve such this we must know the concept of combustion reaction. Therefore, the correct option is option A that is when the combustion of a reactant that contains carbon occurs, carbon dioxide will be one of the products.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
Combustion reaction is a reaction in which a substance, basically hydrocarbons burns in presence of oxygen to produce carbon dioxide and water and heat in large amount. When the combustion of a reactant that contains carbon occurs, carbon dioxide will be one of the products is the correct statement.
Therefore, the correct option is option A that is when the combustion of a reactant that contains carbon occurs, carbon dioxide will be one of the products.
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A certain chip W used in a circuit of a micro computer has a mass of 5.68 milligram ,calculate the amount of W in the micro computer (W=28g/mol)
The amount of W : = 1.22 x 10²⁰
Further explanationGiven
5.6 mg of a micro computer
Required
The amount of chip
Solution
A mole is a number of particles(atoms, molecules, ions) in a substance
1 mole = 6.02.10²³ particles
Can be formulated :
N = n x No
N = number of particles
n = mol
No = 6.02.10²³ = Avogadro's number
mass = 5.68 mg = 5.68 x 10⁻³ g
mol :
= mass : MW
= 5.68 x 10⁻³ g : 28 g/mol
= 2.03 x 10⁻⁴
The number of atoms :
= 2.03 x 10⁻⁴ x 6.02.10²³
= 1.22 x 10²⁰
The blank is the temperature at which a material changes from a liquid to a gas while the blank is the temperature at which a material changes from a solid to a liquid
Which labels belong in the cells marked X and Y? X: High Y: High X: High Y: Low X: Low Y: High X: Low Y: Low
Answer:
hello your question is incomplete below is the missing part of the question
Keisha makes a table to compare plasmas and solids.
Plasma
Solid
Kinetic energy
X
Density
Y
Which labels belong in the cells marked X and Y? X: High Y: High X: High Y: Low X: Low Y: High X: Low Y: Low
answer : X: High Y:High
Explanation:
The labels that belong in the cells are ; X: High Y:High this because when comparing Plasma and Solids the variables; X and Y have positive correlation hence when X is High, Y will be High as well
Answer:
a
Explanation:
