9.0 x 10^23 molecules of CCI4 dissolved to make 500 mL of solution. Find molarity
Answers
Answer: 1.34 M
Explanation:
Related Questions
What happens to the mass, volume, and density of a solid object that is cut in half?
Answers
Answer:
The density remains the same
How can the ocean floor be created and/or destroyed?
Answers
Answer:
The ocean floor can be created by plates shifting on the ocean floor, such as subduction or sea-floor spreading. It can also be destroyed by earthquakes or volcanoes.
Explanation:
When carrying out a liquid-liquid extraction using a separatory funnel, Group of answer choices the bottom layer, which always contains the organic product, is always removed first. the organic layer must always be dried with an anhydrous salt like MgSO4. separation of layers is most efficient when the separatory funnel is drained with the top on. the top layer is always removed first with a disposable pipet.
Answers
When carrying out a liquid-liquid extraction using a separatory funnel the organic layer must always be dried with an anhydrous salt like MgSO4.
What is Liquid-liquid extraction?This is defined as a method of separation of compounds based on their relative solubilities in two different immiscible liquids.
The organic layer must always be dried with an anhydrous salt like MgSO4 to remove the water content for a more accurate result.
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Scandium oxide is insoluble in water. Describe how you could show that it is an amphoteric oxide
Answers
Answer:
If it can react with acid as well as a base then the compound is said to be amphoteric
Explanation:
Answer:
what is a computer name tag type of computer
who wants to be a doctor
Answers
Answer:
maybe, but id rather do automotive stuff, thats my second option.
Explanation:
Please help I need to draw and label a atom that has 7 protons and 8 neutrons!!!! I will give a brainly
Answers
Answer:
Oxygen
Explanation:
Given the following question:
The following atom has 7 protons (plus charge)
The following atom has 8 neutrons (negative charge)
The following atom has 7 electrons since the number of electrons are equal to the number of protons the atom has.
The following atom is oxygen with a mass number of 16: (see photo below)
Let the red represent protons...
Let the gray represent the neutrons...
Let the blue represent the electrons...
Hope this helps.
Can please post the answers for 1-5 of Use the Mole Quick Check
1. The atomic mass unit is equivalent to 1/12 of the mass of a neutral atom of which element? (1 point)
Answers
Answer:
carbon-12
Explanation:
One atomic mass unit is defined as a mass exactly equal to one-twelfth the mass of one carbon-12 atom. Carbon-12 is the carbon isotope that has six protons and six neutrons.A single atom's atomic mass is just its total mass, which is usually given in atomic mass units, or amu. An atom of carbon with six neutrons, carbon-12, has an atomic mass of 12 amu by definition.An atomic mass unit (abbreviated as AMU or amu) is defined as 1/12 the mass of a carbon-12 atom. The nucleus of the carbon-12 (C-12) atom contains six protons and six neutrons. One AMU is the average of the proton and neutron rest masses, in approximate words.This equates to about 1.67377 x 10 -27 kilogram (kg) or 1.67377 x 10 -24 gram (g). In AMU, an atom's mass is generally equal to the nucleus' total amount of protons and neutrons.The AMU is used to express and differentiate between various isotopes of elements by expressing their relative masses. Thus, uranium-235 (U-235) has an AMU of roughly 235, but uranium-238 (U-238) has a little higher AMU. The disparity is due to the fact that U-238, the most common naturally occurring uranium isotope, contains three more neutrons than U-235, which has been utilized in nuclear reactors and atomic bombs.If the solution containing the metal complex ion is made acidic, why will the silver chloride precipitate
Answers
Answer,
For example, silver ion can be precipitated with hydrochloric acid to yield solid silver chloride. Because many cations will not react with hydrochloric acid in this way, this simple reaction can be used to separate ions that form insoluble chlorides from those that do not.
a. correctly write the formula for the reactants and products
b. predict the type of reaction
Answers
Answer:
[tex]Cu(NO_{3} )_{2} + 2NaOH = Cu(OH)_{2} + 2NaNO_{3}[/tex]Double displacement reactionExplanation:
A double displacement reaction is a reaction in which exchange of ions takes place
Sodium in sodium hydroxide displaced copper in copper(II)nitrate to form sodium nitrate and copper replaced sodium to form copper(II)hydroxide
What happens at a convergent boundary?
A. Two tectonic plates are combined to form a single plate.
B. Two tectonic plates are pulled away from each other.
C. Two tectonic plates move past each other horizontally.
D. Two tectonic plates push against each other.
Answers
Which of the following is a correct procedure for the operation of a microscope?
A.
First, put the specimen into focus using a low power lens, then switch to a higher power lens, if needed.
B.
Remove and add slides while the high power lens is selected.
C.
Use the fine focus knob with the low power lens and use the coarse focus knob with the high power lens.
Answers
Good luck :)
Describe haw an increase in burning fossil fuels would affect atmosphere temperatures
Answers
Answer:
When fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing global warming. Already the average global temperature has increased by 1C.
Explanation:
Chemical molecules that impart positional information through their concentration gradient are called
Answers
Chemical molecules that impart positional information through their concentration gradient are called morphogens.
What are morphogens?
In cells of living organisms, positional information are transported through changes in the concentration gradient of morphogens.
The presence of morphogens in a tissue helps to monitor the pattern of development of that tissue.
This chemical molecule embryology because it imparts the positional information of an embryo resulting to cells differentiating at specific positions.
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Those molecules that we can glean information about their position via concentration gradient are called morphogens.
What is concentration gradient?The term concentration gradient refers to the difference in the amount of substance on two different sides. This gradient could be used to glean useful information about the molecule position.
Chemical molecules that impart positional information through their concentration gradient are called morphogens.
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A gas at a constant pressure occupies 2.24 L at 52 C. If the sample is cooled until it
takes up 1.66 Lwhat is the new temperature?
Answers
The new temperature of the gas is -32.15 °C or 240.85 K.
The new temperature of the gas can be calculated using the mathematical representation of Charles's law
Charles's lawCharles's law states that at constant pressure, the volume of a fixed mass of gas is directly proportional to its absolute temperature.
Formula:
V/T = V'/T'................ Equation 1Where:
V = Initial volume of the gasT = Initial temperature of the gasV' = Final Volume of the gasT' = Final temperature of the gas.Make T' The subject of the equation
T' = V'T/V............. Equation 2From the question,
Given:
V = 2.24 LV' = 1.66 LT = 52 °CWe need to convert the initial temperature T above from °C to Kelvin (K) by adding 273.
T = (273+52) = 325 KSubstitute these values into equation 2
T' = (1.66×325)/2.24T' = 539.5/2.24T' = 240.85 K.T' = -32.15 °C.Hence, The new temperature of the gas is -32.15 °C.
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Calculate the amount of CO2 made when 6.4g of methane is burnt
Answers
Answer:
Balanced equation: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l). 1mol CH4 reacts with 2 mol O2 to produce 1 mol CO2. Molar mass O2 = 32g/mol.
Explanation:
hope it helps you
HELP ASAP WILL MARK BRAINLIEST!! Copper reacts with sulfur to form copper (I) sulfide, according to the balanced equation below. 2Cu S → Cu2S Given that there are 40. 2 g Cu and 14. 1 g S, complete the steps below to determine the limiting and excess reactants in the last question. How many moles are in 40. 2 g Cu? mol Cu How many moles are in 14. 1 g S? mol S.
Answers
Answer:0.633 and 0.440
Explanation:
Answer:
Explanation:
0.633 and 0.440
For the next one, it is
Copper and sulfur
Your welcome
Calculate the molarity of 0.5 moles NaHCO3
in 5,314 mL of solution.
How do I solve this?
Answers
Answer: 0.094 M
Explanation:
hello ~
Which of the following metals does not react even with steam.?
A. Silver
B. Iron
C. Calcium
D. Sodium
Answers
Explanation:
it's silver
it doesn't react w steam
How do you make condensation on glass?
Answers
Answer:
Condensation forms when water vapor condenses into a liquid. The surface of the glass inside your windows cools below the dew-point of the surrounding air. Buy a dehumidifier. Dehumidifiers remove moisture from the air and keep moisture off of your windows.
Explanation:
Which of the following samples contains the largest number of atoms A 2.5mol CH4 B 10.0mol He C 4.0mol SO2 D 1.8 mol S8 E 3.0mol NH3
Answers
Answer:
1.8 mole of S8Explanation:A) 2.5×5=12.5B) 10×1=10C) 4×3=12D) 1.8×8=14.4so d) is correct
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What are the difference between malachite and pyrite and how they are alike
Answers
We can confirm that malachite and pyrite are similar in that they are both carbonate minerals, they differ however in chemical composition and characteristics.
What is malachite and pyrite?Pyrite is a form of iron sulfide. This mineral has come to be known as the fool's gold, for its striking resemblance to gold. Malachite, on the other hand, has been known to closely resemble emeralds and is often used as a gemstone. They are both carbonate minerals, but malachite is copper-based, giving it a different chemical composition and properties.
Therefore, we can confirm that malachite and pyrite are similar in that they are both carbonate minerals, they differ however in chemical composition and characteristics.
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Where do bubbles come from when something is boiling? Why do you think that is ?
Answers
Answer:
The molecules of the substance collide more aggressively because of the heat
Answer:
It's because the heat is making the water rise and it makes water vapor. I think it's because when the heats warms up, the water warms up as the heat warms up.
Explanation:
hope this helps : )
Convert 3.50 mm to m. Report your answer to the appropriate number of significant figures. 1 m= 1000 mm
Answers
Answer:
0.0035
Explanation:
3.5 millimetres = 0.0035 meters
Answer:
0.0035 m
Explanation:
since 1000 mm is equal to 1 m
then 3.50 mm will be equal to lets say x
1000 mm = 1 m
3.50 mm = x m
cross multiply
1000 × x = 3.50 × 1
divide both sides by 1000
x = 3.50/1000
x= 0.0035 m
Determine the volume of 4. 69 moles of an ideal gas at STP
Answers
Explanation:
[tex]4.69mol \times \frac{22.4lit}{1mol} = 105.056lit[/tex]
Sodium and potassium ions do not diffuse in equal numbers through ligand-gated cation channels. Why?.
Answers
Answer:
The inside surface of the sarcolemma is negatively charged compared to the outside surface. Sodium ions diffuse inward along favorable chemical and electrical gradients.
Explanation:
Pls, choose me as brainliest!
Which color will the solution most likely become?
Answers
Answer:
colorless
Explanation:
The ferric ion reacts with the thiocyanate, which reduces the concentration of Thiocyanate.
Answer:
I dont remember this answer but I do believe it's colorless
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According to a ph scale, which ph would be the strongest acid?.
Answers
The removal of oxygen from a substance is known as what?
Answers
Answer:
Reduction
Explanation:
An easy thing to remember is:
Oxidation= adding oxygen
Reduction= taking away oxygen
Reduction (reduce)
How is desalination different from water reclamation? a. desalination is less expensive than water reclamation. b. desalination recharges aquifers. c. desalination provides water suitable for drinking. d. none of the above please select the best answer from the choices provided a b c d
Answers
Desalination is different from water reclamation because desalination provides water that is suitable for drinking. Hence, the correct option is C.
What is Desalination?
Desalination is the process of removing salts or other minerals and contaminants from seawater, brackish water, and wastewater effluent and it is an increasingly common solution to obtain fresh water for human consumption and domestic/industrial utilization.
Water reclamation is the process of converting municipal wastewater (sewage) or industrial wastewater into water that can be reused for a variety of purposes. Water reclamation is also known as wastewater reuse, water reuse, or water recycling.
On the other hand, Desalination is an expensive process. Desalination is an artificial process and would not add back to groundwater storage. Desalination provides water suitable for drinking.
Therefore, desalination is different from water reclamation because desalination provides water that is suitable for drinking. Hence, the correct option is C.
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Answer:
C
Explanation:
Edge 2022 Trust the process
A particle-level diagram of a metallic element is shown above. Typically, metals are both malleable and ductile. The best explanation for these properties is that the electrons involved in bonding among metal atoms are:.
Answers
The best explanation for these properties is that the electrons involved in bonding among metal atoms are valence electrons as per the characteristics of metals.
An element is the simplest form of matter.Elements are further classified as metal,non -metals and metalloids. Metals possess luster and are malleable that is they can be drawn into thin sheets.They are also ductile and can be drawn into thin wires and are hard due to the strong ionic bonding present in them.
The unique characteristics of metals are due to the presence of valence electrons present in their atoms.
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