HELP ASAP!!!
What is the molarity of 930 mL of LiCl solution that contains 139.9 g of LiCI?
A. 3.5 mol/L
B. 150 mol/L
C. 3.3 mol/L
D. 3.5 x 10-3 mol/L
Answers
Explanation:
To determine the molarity, we have to find the number of moles in the volume given, and then extrapolate to find the number of moles that would be in 1 L.
Determine the moles in the given volume
moles of LiCl = mass ÷ molar mass
= 139.9 g ÷ 42.39 g/mol
= 3.30 mol
Find the moles in 1 L
Since 930 mL of LiCl = 3.30 mol
then 1000 mL of LiCl = (3.30 mol × 1000 mL/L) ÷ 930 mL
= 3.55 mol/L
Related Questions
How many moles of carbon atoms are there in
5g of carbon?
Answers
Answer:
12 atoms of carbon
Explanation:
(6.023X10^23)/12 atoms of Carbon.
There are 0.42 moles of carbon atoms in 5g of carbon.
HOW TO CALCULATE NUMBER OF MOLES:The number of moles in a substance can be calculated by dividing the mass of the substance by its molar mass. That is;no. of moles = mass (g) ÷ molar mass (g/mol)
According to this question, the mass of carbon is 5g. The molar mass of carbon is 12g/mol.No. of moles = 5g ÷ 12g/mol
No. of moles = 0.42moles
Therefore, there are 0.42 moles of carbon atoms in 5g of carbon.
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a 47.0 ml aliquot of a 0.400 m stock solution must be diluted to 0.100 m. assuming the volumes are additive, how much water should be added?
Answers
Answer:
141 ml
Explanation:
An object has a volume of 2 cm3 and a mass of 4 g. What is the density of the object?
Answers
Answer: 2.0 grams per cubic centimeter
Explanation: i had this
1. What are the 5 characteristics a substance must have in order to be a mineral
Answers
Answer:
A mineral has to be naturally occurring, inorganic, solid, have a crystal structure, and have a definite chemical composition.
Explanation:
Which things below would help make an ecosystem more biodiverse? O Having a very large population of a species O Having a large community of organisms O Lots of different traits in a species Not having seasons
Answers
• An ecosystem refers to multiple species
• A large population of one species is a decent answer but not the best because more species would have more diverse genetics
• Lots of traits in one species is basically the same as the above bullet point
• Not having seasons could help but not necessarily
• So our best answer is a large community of organisms
•
the temperature at which a liquid becomes a gas is called the
Answers
Differentiate liquid crystals from pure liquids and crystalline solids.
(Answer this question correctly and I will give the first correct answer brainliest)
Answers
Answer:
the difference between pure liquids and crystallines solids is pure liquids have optically active molecules forming twisted shapes whereas solids do not
Explanation:
Materials:
Food labels
Magnifying glass or eye glasses (if necessary)
Procedure:
1. Look for ten (10) food labels that you can find at home (ex. cereal drink, chocolate candy, soy sauce, etc.)
2. You may also find product labels other than food such as medicine, household
cleaning products, cosmetics, and toiletries.
3. List down in the table below, the compounds in the product label and the constituent
elements. There are cases that you will need to look up the constituent elements
because they may not be obvious from the compound name (e.g., citric acid, oil).
Write its uses.Use(s)/Function
4. Careful in handling corrosive substances. Use gloves or wash your hands after holding it.
Compounds and their constituent elements written in the food labels
Food Product
Compound
Constituent Element
Use(s)/Function
Ex. Cereal drink
Iron pyrophosphate
Iron, phosphorus, oxygen
Zinc sulfate
Zinc, sulfur, oxygen
What distinguishes compounds from elements? Applying, Synthesizing
pls help me...:((
Answers
Answer:
Nice experiment
Explanation:
Select the reactants of photosynthesis
Answers
The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water
Which change is likely to happen to an atom of the element strontium (Sr) during bonding?
(1 point)
It will gain electrons, forming a positive ion.
It will gain electrons, forming a positive ion.
It will give up electrons, forming a negative ion.
It will give up electrons, forming a positive ion.
It will gain electrons, forming a negative ion.
Answers
Answer: It will give up electrons, forming a positive ion.
During bonding, strontium atom will give up electrons, forming a positive ion.
STRONTIUM:
Strontium (Sr) is an element in group 2 of the periodic table. Just like every other element in group 2, strontium posseses two valence electrons in its outermost shell. Strontium will undergo bonding with other atoms by losing its two (2) valence electrons to form a cation i.e. a positively charged ion. Therefore, strontium atom will give up electrons, forming a positive ion when it undergoes bonding.Learn more at: https://brainly.com/question/21085681?referrer=searchResults
0.2 mol of the transition metal (M) comhine with excess chlorine gas to form 30.3 g of MCl3. What is the electronic configuration of the ion of the metal (M) in this compound?
(Sc=45, Cr=52, Fe=55.8, Co=58.9, Cl=35.5)
A) [Ar], 3d3
B)[Ar], 3d5
C)[Ar], 3d6
D) [Ne], 3s2 3p6
Answers
Given metallic chloride formula =MCl3
Means M has valency 3It belongs to Nitrogen(N) family.
The elements given by Nitrogen,Phosphorus,Arsenic,Stubnum(Tin),Bismuth.But the condition is that its transition element.
The element is vanedium(V)EC given by
[tex]\\ \sf\longmapsto 1s^22s^22p^63s^23p^64s^23d^3[/tex]
[tex]\\ \sf\longmapsto [Ar]3d^3[/tex]
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
Explain how copper conducts electricity?
Answers
Answer:
Copper is a metal made up of copper atoms closely packed together. As a result, the electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons because they help copper be a good conductor of heat and electricity.
Explanation:
the range of all forms of radiant energy is called the
Answers
Answer:
I think its electromagnetic spectrum
Answer:
Radiant energy is energy that travels in waves and can travel through space. The sun gives off radiant energy and is important here on earth for many natural processes to occur. The electromagnetic spectrum is the range of all forms of radiant energy from gamma rays to radio waves.
Explanation:
Write an argument for the people of Westfield identifying the reddish-brown substance
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Answer:
lol
Explanation:
3. A sample of carbon has a mass of
0.000000000000000-0034 kg. Express
this mass in scientific notation.
Answers
[tex] - 34 {}^{15} [/tex]
The power of -34 will be 15 because 15 zeroes are given....
The photoelectron spectrum for the element nitrogen is represented above. Which of the following best explains how the spectrum is consistent with the electron shell model of the ato
f the atom?
A. The leftmost peak represents the valence electrons.
B. The two peaks at the right represent a total of three electrons.
C. The electrons in the ls sublevel have the smallest binding energy
D. The electrons in the 2p sublevel have the smallest binding energy
Answers
Answer:
D. Is the correct option.
Explanation:
2p level contains the electrons furthest from the nucleus in the case of Nitrogen thus it's much easier to disperse/remove the electrons from the shell due to low pull of nucleus energy.
The best explanation of how the spectrum is consistent with the electron shell model of the atom is the electrons in the 2p sub level have the smallest binding energy. Thus, option D is correct.
What is photoelectron spectrum?
Photoemission spectroscopy also known as photoelectron spectroscopy which photoelectric effect is the process in which electron are get energy from external source of energy like sunlight deals with energy measurement of energy emission or electrons emitted from solids, gases or liquids by the process of photoelectric effect,
Photoelectric effect is the process in which electron are get energy from external source of energy like sunlight and get excited and comes in excited state from the ground state due to this process continuos flow of electron is take place and after that flow of energy is takes place.
Therefore,The best explanation of how the spectrum is consistent with the electron shell model of the atom is the electrons in the 2p sub level have the smallest binding energy. Thus, option D is correct.
Learn more about electrons here:
https://brainly.com/question/1255220
#SPJ2
Dissolving and melting are similar because both
A. result in a change in mass.
B. are kinds of physical change.
C. involve even mixing of substances.
D. result in new substances being formed.
Answers
Answer is B are kinds of physical change.
Is the correct answer <3
H2F5BLi
How many atoms are in the chemical formula?
Answers
Answer:
eight atoms
hope it helps
How do you know where something fits on the electromagnetic spectrum? I currently have the Hz but do I need to convert that into something else?
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Two scientists work together on an experiment, but they have different hypotheses. When scientists look at the experimental results, they interpret the data in different ways and come to different conclusions. Which of the following does this situation best illustrate?
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Answer:
The correct answer is option D, confirmation bias.
The correct answer is option D, confirmation bias.Confirmation bias is the tendency to interpret data in a way that confirms the already designed hypotheses.
The correct answer is option D, confirmation bias.Confirmation bias is the tendency to interpret data in a way that confirms the already designed hypotheses.As the two scientists interpret the data (or experimental results) in different ways to adhere to the different hypotheses. this is also called indicative of cognitive bias. This is also called inductive reasoning where the premise is viewed as evidence for the validity of the conclusion.
Answer:
d
Explanation:
got it right on plato
why should you not change the subscripts in chemical formulas when balancing chemical equations?
Answers
Answer:because the chemical formula is vital to the equation it tells you what creates the chemical and whats in it you can change the exponents but not the formula itself
Explanation:
Identify the independent and the dependent variables of this statement: Do tomatoes
have a faster growth rate under fluorescent, incandescent, or natural light?
Answers
Answer:The dependent variable is the rate of germination and growth. The independent variable is the variety of tomato.
Explanation:i hope this helps you
hydrogen is grouped with the alkali metals because it
Answers
Answer:
Hydrogen is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.
Explanation:
compounds with molecules that do not have a polar charge?
Answers
Answer:
Nonpolar molecules
Explanation:
Someone pls help me I will make you brain
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Answer:
111
16464616944664kxkxlndkkndndnfnnfnfnnfnfisotopess! help pleasee 20pts
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Answer:
For lithium -6
Proton neutron and electron are
3, 3, 3
For lithium -7
It is 3, 4, 3
Explanation:
Proton is atomic number
Neutron is mass num - atomic num
Electron is the same number with proton
Answer this question will give brainliest
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Explanation:
cooling
communication
heating
motion
Answer:
I believe it's all of the above
Explanation:
Because heating and cooling can be done by an AC unit, which takes electricity. Communication also takes electricity, along with lighting (especially if we're talking light fixtures to light up homes). Not to mention motion, such as cars and other transportation uses, believe it or not, electricity.
Hope this helped, also please tell me if I'm wrong.
True or false chemistry. No links.
Answers
is the formation of the grand canyon a physical or chemical change
Answers
Answer:
Its a physical change I believe
Explanation:
