Answer:
1)A mixture that is easily separated, the components are different sixes and unevenly mixed.
Explanation:
Mixtures are impure substances with usually indefinite composition. Their constituents often retains their identities. They can easily be separated into constituents by physical methods.
Homogenous mixtures have their constituents existing in only one phase.
Heterogeneous mixtures have their constituents existing in at least two different phases.
Heterogenous mixtures are easily separated due to the phase differences of its constituents. They are easily separated by physical processes compared to homogeneous mixtures.PLEASE HELP I WILL GIVE YOU BRAINLIEST
(the linked photo)!!! thank you
Answer:
1. nitrous oxide
2. copper sulfide
3. cl2o7
4. MgBr2
Explanation:
hope it helps
what is the mass of 8.07 x 10^24 molecules of 02?
Answer:Avogadro's number 6.02 x 10^23 of O2 molecules has a mass of 32 gm (atomic weight of O = 16 gm, 2 x 16 = 32).
Explanation:pls brainless
what type of molecule are these and what is the strongest IMFs in between?
Answer:
CH2O is formaldehyde a covalent compound and its intermolecular forces are week
KCl is an ionic compound formed by electrostatic force of attraction between positive and negative charge. Ionic compounds also exists in three dimensional crystal lattic that is why intermolecular forces in KCl is stronger.
Moreover melting point of KCl is higher than CH2O
Explanation:
Describe the process of freezing ice cream in terms of heat flow.
Answer:
Freezing the mix is one of the most important operations in making ice cream, for upon it depend the quality, palatability, and yield of the finished product. Typically, freezing of ice cream is accomplished in two steps: (1) dynamic freezing, where the mix is frozen quickly while being agitated to incorporate air and to limit the size of ice crystals formed; and (2) static freezing, where the partially frozen product is hardened without agitation in a special low-temperature environment designed to remove heat rapidly. Although these steps primarily encompass freezing, or the formation of ice crystals, there are several other important processes that take place during this time that significantly impact the quality of ice cream. Both the dispersion of air bubbles and rearrangement of fat globules occur during the freezing steps.
Explanation:
Which chemical equations show a precipitation reaction?
Select all the correct answers.
2NaNO3(aq) + NiCl2(aq) → 2NaCl(aq) + Ni(NO3)2(aq)
MgSO4(aq) + CaCl2(aq) → MgCl2(aq) + CaSO4(s)
AlBr3(aq) + 3LiI(aq) → AlI3(aq) + 3LiBr(aq)
FeCl2(aq) + Na2CO3(aq) → FeCO3(s) + 2NaCl(aq)
2AgNO3(aq) + Na2S(aq) → Ag2S(s) + 2NaNO3(aq)
The equations that show a precipitation reaction would be [tex]MgSO_4(aq) + CaCl_2(aq) --- > MgCl_2(aq) + CaSO_4(s)[/tex], [tex]FeCl_2(aq) + Na_2CO_3(aq) --- > FeCO_3(s) + 2NaCl(aq)[/tex], and [tex]2AgNO_3(aq) + Na_2S(aq) --- > Ag_2S(s) + 2NaNO_3(aq)[/tex]
What is a precipitation reaction?It is a reaction in which two soluble salts react in aqueous solutions to form one soluble and one insoluble salt.
Thus, all the equations with an insoluble salt as one of the products will qualify as precipitation reactions. The insoluble is designated as (s).
Hence, the following are precipitation reactions:
[tex]MgSO_4(aq) + CaCl_2(aq) --- > MgCl_2(aq) + CaSO_4(s)[/tex][tex]2AgNO_3(aq) + Na_2S(aq) --- > Ag_2S(s) + 2NaNO_3(aq)[/tex][tex]FeCl_2(aq) + Na_2CO_3(aq) --- > FeCO_3(s) + 2NaCl(aq)[/tex]More on precipitation reactions can be found here: https://brainly.com/question/24158764
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Suppose you wanted to dissolve 40.0 g NaOH in enough H2O to make 6.00 dm3 of solution
Molarity of solution = 1.6 M
Further explanationGiven
40 g NaOH
6 L solution
Required
Steps to solve the problem of molarity
Solution
No additional information about the question.
If you want to make the solution above, then we just need to put the existing NaOH (40 g) into 6 L of water, then do the stirring (in a warm temperature above the hot plate will speed up the NaOH dissolving process)
But if you want to know the molarity of a solution, then
1. we calculate the moles of NaOH[tex]\tt mol=\dfrac{mass}{MW}[/tex]
MW(molecular weight) of NaOH=
Ar Na+ Ar O + Ar H
23 + 16 + 1 = 40 g/mol
so mol NaOH :
[tex]\tt mol=\dfrac{40~g}{40~g/mol}=1~mol[/tex]
2. Molarity(M)[tex]\tt M=\dfrac{n}{V}\\\\M=\dfrac{1}{6}\\\\M=0.16[/tex]
A local FM radio station broadcasts at an energy of 6.04E-29 kJ/photon. Calculate the frequency at which it is broadcasting.
Answer:
9.11×10⁷ Hz
Explanation:
From the question given above the following data were obtained:
Energy (E) = 6.04×10¯²⁹ KJ
Frequency (f) =?
Next, we shall convert 6.04×10¯²⁹ KJ to joule (J). This can be obtained as follow:
1 KJ = 1000 J
Therefore,
6.04×10¯²⁹ KJ = 6.04×10¯²⁹ KJ × 1000 J / 1 KJ
6.04×10¯²⁹ KJ = 6.04×10¯²⁶ J
Thus, 6.04×10¯²⁹ KJ is equivalent to 6.04×10¯²⁶ J.
Finally, we shall determine the frequency at which the FM radio station is broadcasting as follow:
Energy (E) = 6.04×10¯²⁶ J
Planck's constant (h) = 6.63×10¯³⁴ Js
Frequency (f) =?
E = hf
6.04×10¯²⁶ = 6.63×10¯³⁴ × f
Divide both side by 6.63×10¯³⁴
f = 6.04×10¯²⁶ / 6.63×10¯³⁴
f = 9.11×10⁷ Hz
Therefore, the frequency at which the FM radio station is broadcasting is 9.11×10⁷ Hz
Will the composition of water molecules vary depending on their source?
Answer:
It does not matter where the sample of water came from or how it was prepared. Its composition, like that of every other compound, is fixed.
PLEASE HELP ASAPPPP I WILL VENMO YOU MONEY IF YOU DO THIS CORRECTLY Write the name for the following compounds.
1. N2O (Covalent)
2. Cu2S (Ionic)
Write the Chemical Formula for the following compounds.
3. Dichlorine heptoxide (Covalent)
4. Magnesium bromide (lonic)
Answer:
Dichlorine heptoxide=Cl₂O₇
magnesium bromide=MgBr2
Explanation:
Will give brainliest
4. On the island of Hawaii, Keanu notices that the sand on the beach is black, the same color as the
rock formations on the island. Keanu realizes the sand used to be part of the rock formations. How
did material from the rock formations turn into sand?
Answer:
The ricks were degraded over time by wind and water and were crushed down into tiny, smaller rocks, which is sand.
Explanation:
This is my first answer sorry im not that smart
Why is geothermal energy not used as
frequently as other renewable energy source?
Answer:
Because its source is the almost unlimited amount of heat generated by the Earth's core. Even in geothermal areas dependent on a reservoir of hot water, the volume taken out can be reinjected, making it a sustainable energy source.
Explanation:
Geothermal energy is underutilized and underutilized in comparison to other renewable energy sources such as solar and wind energy. This is due to the difficulty of extracting energy from the subsoil, as complications can arise that affect both the environment and the cost of energy.
What is geothermal energy ?Geothermal energy is the thermal energy in the Earth's crust that results from the planet's formation and radioactive decay of materials in currently unknown but potentially roughly equal proportions.
Geothermal energy is not always a renewable energy source because the extraction of heat from the earth's crust over time can cause depletion, causing some geothermal wells to cool and run out of water.
Geothermal energy can be found at depths accessible by drilling in these areas. It is simply too deep to reach in other parts of the world. The second reason is that it has high capital expenses. The costs of drilling and power plants are somewhat high.
Thus, Geothermal energy is underutilized and underutilized in comparison to other renewable energy sources such as solar and wind energy.
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Chemistry conversion:
Convert 3.0099 dumps to wigs.
6375.23 dumps = 1 wig
Round your answer to 5 sig figs.
dumps and wigs are made up units for this question.
Answer:
0.00047212
Explanation:
Given parameters:
Quantity of dumps = 3.0099 dumps
Unknown:
Amount of wigs in this dumps = ?
Solution:
Since it is given that;
6375.23 dumps = 1 wig
To find 3.0099dumps;
3.0099 dumps = x wigs
6375.23x = 3.0099
x = [tex]\frac{3.0099}{6375.23}[/tex] = 0.00047212 wig
Plsss name this compound
Explanation:
It looks like 2,2,4-trimethylpentane.
Longest alkane chain contains 5 carbons. => -pentane
3 methyl groups on the 2nd, 2nd and 4th carbons.
please help..............
Answer:
hope this help
Explanation:
change: volume of solid , volume of liquid , the volume of gases
not change: the shape of solid , the shape of liquid , the shape of gases
2. Explain Why would it be difficult to find the volume of a rock using
a ruler?
Answer:
Most of these rocks are not made up of common geometric shapes
Explanation:
Because most rocks are not made up of common geometric shapes, it would be difficult or impossible to find the volume of a rock using a ruler; there would be no easy way to measure the rock's volume using a ruler
Hope this helped!
QUESTION 3
Identify the number that has 3 significant figures.
O A. 100
OB. 12.0
O C. 120
OD. 123.00
Answer:
D
Explanation:
Number of atoms in 4.5 moles of Au?
please helpppppppppp
Answer:
Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles
And the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype.
what is the empirical formula for a compound that is 40% S, and 59.9% O?
Answer:
O3S
Sulfur Trioxide
Explanation:
Adding oil to a table would ___________ the friction when sliding a book across it.
Increase or decrease
Answer:
Increase
Explanation:
Hope it helps you
Answer:
Decrease
Explanation:
If the oil you're referring to is just some normal oil, it'll lessen the friction and cause it to side more smoothly
A compound is found to contain 2.270 % hydrogen, 34.80 % phosphorus, and 62.93 % oxygen by mass. What is the empirical formula for this compound
Answer: The empirical formula is [tex]H_4P_2O_7[/tex]
Explanation:
If percentage are given then we are taking total mass is 100 grams.
So, the mass of each element is equal to the percentage given.
Mass of H= 2.270 g
Mass of P = 34.80 g
Mass of O = 62.93 g
Step 1 : convert given masses into moles
Moles of H = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{2.270g}{1g/mol}=2.270[/tex]
Moles of P = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{34.80g}{31g/mol}=1.122[/tex]
Moles of O = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{62.93g}{16g/mol}=3.933[/tex]
Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.
For H = [tex]\frac{2.270}{1.122}=2[/tex]
For P= [tex]\frac{1.122}{1.122}=1[/tex]
For O = [tex]\frac{3.933}{1.122}=3.5[/tex]
The simples ratio will be = H: P : O= 4: 2: 7
Hence the empirical formula is [tex]H_4P_2O_7[/tex]
Phosgene is a highly toxic gas made up of carbon, oxygen, and chlorine atoms. Its density at 1.05 atm and 258C is 4.24 g/L. (a) What is the molar mass of phosgene
Answer:
Molar mass = 99 g/mol
Explanation:
Phosgene contains carbon, oxygen and chlorine atoms. Its molecular formular is; COCl2
The molar mass is given as the sum off the individual atomic mass of the elements in the compound.
Molar mass = C + O + 2Cl
Molar mass = 12 + 16 + 2(35.5)
Molar mass = 99 g/mol
PLEASE HELP WILL MARK BRAINLIEST
how does the container with the plastic wrap stimulate carbon dioxide in the atmosphere?
Answer:
The Earth’s greenhouse effect is a natural consequence of the chemical makeup of its atmosphere. If it
were not for the greenhouse effect, life as we know it could not exist on Earth: it would be too cold. Our
atmosphere is made mostly of nitrogen and oxygen, but also contains several other gases. These include
carbon dioxide, methane, nitrous oxide, water vapor and ozone, which are known as greenhouse gases.
Greenhouse gases are released naturally through geologic processes and the metabolic activity of living
things. However, there is an ongoing debate over human effects on Earth’s global climate. Human industrial activity on the planet has increased the quantities of greenhouse gases through agriculture, manufacturing, power generation, and engines used for transportation. Key questions include: Is the average temperature of Earth increasing? Does the presence of human beings contribute to global warming? If the temperature of Earth does become warmer, how will it affect us?
Explanation:
Draw both the chair and boat conformation of 1,4-dimethylcyclohexane with the methyl groups as cis and trans for both conformations. Label your molecules for cis and trans. Tell which is the highest in energy.
Answer:
Boat conformation cis 1,4-dimethyl cyclohexane has the highest energy.
Explanation:
From the conformations, the boat conformation cis 1,4-dimethyl cyclohexane is least stable due to the fact that two methyl groups are located in opposite direction to each other, this leads to the production of a higher strain. Similarly, Chair conformations appear more stable than boat conformation. Hence, energy is inversely proportional to stability. As a result of the aforementioned, boat conformation cis 1,4-dimethyl cyclohexane has the highest energy.
the presidential inauguration is free to watch with or without paying ror traditional tv service. Why is this important?
Answer:
so that people would be able to witness the inauguration of a president, since a president is an important part of a country.
Explanation:
When salt water is heated leaving behind solid salt, this is separating a mixture by what method ?
Covalent bonding occurs between atoms when 1. The potential energy of the shared elec- trons is lower in the bond than it would be if the electrons were not shared between two nuclei 2. The potential energy of the shared elec- trons is independent of the covalent bond, but the potential energy of the newly formed molecule is greater than the individual atoms 3. Covalent bonding occurs when the octet rule is satisfied regardless of the potential en- ergy of the shared electrons 4. The potential energy of the shared elec- trons is higher in the bond than it would be if the electrons were not shared between two nuclei
Answer:The potential energy of the shared elec- trons is lower in the bond than it would be if the electrons were not shared between two nuclei
Explanation:
The entire essence of chemical combination is the attainment of a lower potential energy.
When two atoms are isolated at a large distance from each other, the potential energy is high.
However as the nuclei of the two atoms approach each other, the potential energy decreases until a minimum is attained. The distance between the nuclei at this point is the bond distance.
Hence, the potential energy of the shared electrons is lower in the bond than it would be if the electrons were not shared between two nuclei.
what does (I) means in a chemical equation
Answer:
the l sign means the substance in the chemical equation is a liquid. (hope this helped : D )
Kichi made a table to identify where she might find acids and bases in her house based on their common uses. Substance ammonium hydroxide sulfuric acid citric acid potassium hydroxide Location cleaning cabinet cosmetics bag refrigerator flashlight What error did Kichi make?
Ammonium hydroxide would be found in the pantry because it is found in vinegar.
Sulfuric acid would be found in the garage because it is used in car batteries,
Citric acid would be found in the garage because it is used to clean rust from metal.
Potassium hydroxide would be found in the kitchen cabinet because it is used in oven cleaner.
Answer:
Kichi made the an error in the 2nd row which is Sulfuric acid.
Sulfuric acid would be found in the garage because it is used in car batteries
Explanation:
Ammonium hydroxide (NH4OH) is used in household cleaners.
Sulfuric acid (H2SO4) is used in industrial chemicals and car batteries.
Citric acid (H3C6H5O7) is in lemons, limes, and oranges.
Potassium hydroxide is used in batteries.
Kichi made a mistake while locating sulfuric acid which is an acid and is used car batteries ,hence it should be found in garage rather than in cosmetics bag.
What is an acid?Acids are defined as substances which on dissociation yield H+ ions , and these substances are sour in taste. Compounds HCl, H₂SO₄ and HNO₃ are acids as they yield H+ ions on dissociation.
According to the number of H+ ions which are generated on dissociation acids are classified as mono-protic , di-protic ,tri-protic and polyprotic acids depending on the number of protons which are liberated on dissociation.
Acids are widely used in industries for production of fertilizers, detergents batteries and dyes.They are used in chemical industries for production of chemical compounds like salts which are produced by neutralization reactions.
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