Answers
Answer:
0.047 moles
Explanation:
From the question,
Applying
PV = nRT............. Equation 1
Where P = Pressure of CH₄ gas, V = Volume of CH₄ gas, n = number of moles of CH₄ gas, R = Molar gas constant.
make n the subject of the equation
n = PV/RT............. Equation 2
Given: P = 660 torr = (660×0.00131579) atm = 0.868 atm, V = 1300 mL = (1300/1000) L = 1.3 L, T = 20 °C = (20+273) K = 293 K
Constant: R = 0.082 atm.dm³/K.mol
Substitute these values into equation 2
n = (0.868×1.3)/(0.082×293)
n = 1.1284/24.026
n = 0.047 mole
Related Questions
I will brainless who can answer this all pleaseeeeej
Answers
Answer:
False, True, True, False, False, not sure, True, False, True, True
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The best way to get the sugar out of a sugar-water solution is to __________.
Answers
Answer:
Distillation is the process by which sugar can be separated from the sugar solution.
Explanation:
Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation.
Answer:
Boil the water, this would cause the water to evaporate and will leave behind the sugar crystals, which is known as distillation.
30 g of hydrogen reacts with 120 g of oxygen to form water.How much water is produced?
136.9 g of copper sulfide breaks apart into sulfur and 111.6 g of copper.How much sulfur is produced?
Answers
According to law of conservation of mass.
In a chemical reaction Mass is neither created nor destroyed.
Mass of product =Mass of reactant#1
Mass of water
[tex]\\ \sf\longmapsto 30+120=150g[/tex]
#2
Mass of sulphur:-
[tex]\\ \sf\longmapsto 136.9-111.6=25.3g[/tex]
distinguish between the crust and and the lithosphere
Answers
Answer:
What is the difference between the crust and lithosphere? The crust (whether continental or oceanic) is the thin layer of distinctive chemical composition overlying the ultramafic upper mantle. ... The lithosphere is the rigid outer layer of the Earth required by plate tectonic theory.
Explanation:
The colour observed hrainbow during on the lower side of a a sunny rainy day is
Answers
Answer:
..
Explanation:
Choose the best
1. Aliquid is a form of matter that:
a flows,
b. is easily compressed.
c. has no definite volume.
d. has a definite shape.
Answers
Answer:
d. has a definite shape.
Explanation:
A student was adding baking soda and vinegar in a bottle. They then put a balloon on top of the bottle immediately after adding them together. The student observed that the balloon inflated and got larger. The student then predicted that the chemical reaction between the vinegar and the baking soda had created brand new matter, and would have more mass at the end of the reaction. Would you agree with the student’s prediction or not? Explain your answer.
Whoever answers my question gets BRAINLIEST!!
Answers
Answer:
The prediction of the student about the amount of reactant and product is incorrect.
No, I do not agree with the student’s prediction because the amount of reactant is always equals to the amount of product. According to the Law of Conservation of Mass, mass cannot be created nor destroyed. Therefore in any chemical reaction the mass of the products must equal or same to the mass of the reactants so according to this law, the prediction of the student is incorrect.
Explanation:Give brailiest please
Answer:
The chemical reaction that occurs when vinegar and baking soda (sodium bicarbonate) are combined, creates a gas that is known as carbon dioxide (or CO2). I would agree with the student's prediction because the atoms rearrange themselves to create the product.
Explanation:
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Limestral flour (calcium carbonate) is a weak base used for at a few years of intervals Neutralize the acidification that takes place by lakes and woodland. Would not be a good idea that instend Using the stronger base sodium hydroxide and then be able to use a little less amount?
Answers
Answer:
Well, no.
Explanation:
NaOH is a base which is found in soap, and other detergents which gives it the slippery feel, because, it is a really strong base. Applying this to lakes and woodland could make the water and woodland really concentrated which could make them harmful for domestic and industrial use
what is the end-product of the beta-amylase reaction?
Answers
Answer:
maltose
Explanation:
β-amylase is an enzyme found in fungi, bacteria and plants but not in humans. Unlike α-amylase, β-amylase can only degrade starch from the non-reducing end of the polymer chain by hydrolysis of the second α-1,4 glycosidic bond. The end product is thus maltose, i.e. two glucose units.
Explain what the force of Gravity on each planet depends on.
Answers
Answer:
It depends on the size and mass of the object. Look at Jupiter. It has a higher gravitational pull because it has a higher mass
An atom has 21 protons, 24 neutrons, and 18 electrons. Which change will cause the atom to have more negatively charged particles than positively charged particles?
losing two protons
losing four neutrons
gaining three electrons
gaining four electrons
Answers
Answer:
ganar tres electrones
Explanation:
Answer:
gaining three electrons
Which of these objects has the properties of a solid?
A.
desk
B.
water
C.
rain
D.
milk
Answers
3. The substance that is formed or we finish up with are called.
Answers
Read the claim.
Breakfast is an important meal. It jump starts the body’s process of using calories to break down food. Appetite can decrease with age, but going too long without eating causes metabolism to slow down. Current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours.
Who might benefit from this claim?
people who have a fast metabolism
stores that sell exercise equipment
people who take vitamin supplements
grocery stores that sell legumes
Answers
Answer:
i think people who take vitamins
Answer:
its d;grocery stores sell legumes
Explanation:
I just took the test
help please please please please please
Answers
Answer:
wow only six points, you have to amp it up a little
Explanation: because
PLEASE HELP! Which rock is an example of a chemical sedimentary rock?
coal
iron ore
shale
sandstone
Answers
Answer:
sandstone
Explanation:
Answer: iron ore
Explanation: The iron ore deposits are found in sedimentary rocks. They are formed by the chemical reaction of iron and oxygen mixed in the marine and fresh water.
which of these is chemical property
Answers
Arrange the following elements in order of increasing atomic radius.
K, Li, O, Se
Answers
Answer:
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the rays produced in a cathode tube are
Answers
Answer:
Electrons
Explanation:
Cathode rays carry electronic currents through the tube. Electrons were first discovered as the constituents of cathode rays. J.J. Thomson used the cathode ray tube to determine that atoms had small negatively charged particles inside of them, which he called “electrons.”
The rays produced in a cathode tube are electrons which are present in the shells surrounding the nucleus of an atom.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
Learn more about atom,here:
https://brainly.com/question/13654549
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Which element most likely has the same number of valence electrons as silicon (Si)?
O germanium (Ge)
O arsenic (As)
O phosphorus (P)
O sulfur (S)
Answers
Answer:
germanium (Ge)
Explanation:
both belong to the same group
Answer:
A. germanium (Ge)
what is the percent of phosphorus by mass in phosphoric acid h3po4
Answers
Explanation:
% phosphorus by mass
= (mass of phosphorus ÷ mass of phosphoric acid) × 100%
= (30.974 g/mol ÷ 97.994 g/mol) × 100%
= 31.61 %∴ percent of phosphorus by mass in phosphoric acid 31.61%.The atomic mass of hydrogen is 1. How many protons does a hydrogen atom have?
Answers
Explain the relationship between primary, secondary, tertiary consumers, and decomposers
Answers
Answer:
The organisms that consume the primary producers are herbivores: the primary consumers. Secondary consumers are usually carnivores that eat the primary consumers. Tertiary consumers are carnivores that eat other carnivores.
What caused the water level in the pipe to change when you put the bottle in cold water
Answers
Answer:
Water cooled down and contracted.
Explanation:
When water contracts, its volume decreases. When the volume of the water in the bottle system decreases, the water is pulled farther down the clear pipe.
Someone pls help me I will make you brain
Answers
Answer:
D, radiation
Explanation:
the sun's heat radiates onto the land, oceans, and surrounding atmosphere, warming them
Which statement best describes a chemical change?
O A. A substance changes size or phase.
O B. Atoms are made and destroyed.
O C. The nuclei of atoms are rearranged.
O D. Substances form new substances.
Answers
ASAP PLEASE
What are the rules for naming binary compounds that are formed between nonmetals. Are these compounds ionic compounds or covalent compounds, explain why?
Answers
Answer:
Explanation:Compounds between Nonmetals and Nonmetals
Compounds that consist of a nonmetal bonded to a nonmetal are commonly known as Molecular Compounds, where the element with the positive oxidation state is written first. In many cases, nonmetals form more than one binary compound, so prefixes are used to distinguish them.
# of Atoms 1 2 3 4 5 6 7 8 9 10
Prefixes Mono- Di- Tri- Tetra- Penta- Hexa- Hepta- Octa- Nona- Deca-
the compounds are covalent, not ionic
calculate the volume of a box with the following dimensions: length=8 cm
width = 6cm and height = 5 cm
Answers
Answer: 240 cm³
Explanation:
Volume of the box = l × w × h
= (8 cm × 6 cm × 5 cm)
= 240 cm³
10/4/2021
the total number of protons and neutrons in the nucleus
of an atom
a) atomic mass unit
b) mass number
c) atomic number
d) atomic mass
Answers
Answer:
atomic number
Explanation:
what conclusions can you draw about how the plasma membrane contributes to the function of the cell as a whole write an evidence based claim. will give brainleist
Answers
Answer:
Plasma membranes have three primary functions: (1) they keep toxic substances out of the cell; (2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the cell and the outside environment; and (3) they separate vital but incompatible metabolic processes conducted within organelles
Explanation: