Answer:
The particles dispersed in a colloid are much smaller than those in a suspension and do not settle out.
Explanation:
A suspension is a heterogeneous mixture of substances that does settle out on standing. The particles in a suspension are large enough that they can even be seen with naked eyes. The particles in a suspension are more than 1,000 nm in size.
A colloid contains particles that are lesser in size than a suspension (about 1-1,000 nm). The particles in a colloid can not be seen except with the help of a light microscope.
In the reaction N2 + 3H2—> 2 NH3, what is the mole ratio of N2 to
NH3?
Select one:
O a. 1:1
O b. 2:3
O c. 1:3
O d. 1:2
Answer:
hey,the answer is d, 1:2
Answer: D
Explanation:
The equation shows that one mole of nitrogen reacted with three moles of hydrogen to produce two moles of ammonia.
Qual a influência da água no processo de glicose ?
Respuesta:
Beber agua ayuda a rehidratar la sangre cuando el cuerpo intenta eliminar el exceso de glucosa a través de la orina. De lo contrario, el cuerpo puede recurrir a otras fuentes de agua disponible.
1.
How does light behave when it is shined on an object?
Answer:
Reflection is when light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. For a smooth surface, reflected light rays travel in the same direction.
Explanation:
___Fe2O3 + ___C --> ___Fe + ___ C03 balanced
Answer:
Fe2O3 + C → 2Fe + CO3
Explanation:
The unbalanced equation given in this question is as follows:
Fe2O3 + C → Fe + C03
To balance this equation, one should ensure that the number of atoms of each element on both sides of the equation is equal. The balanced equation is as follows;
Fe2O3 + C → 2Fe + CO3
N.B, there are;
- 2atoms of Fe on both sides
- 1 atom of C on both sides
- 3 moles of O on both sides
The temperature of the areas surrounding Kochi before each storm was about 10°C and there was the same amount of water vapor in the air. Given this information, which storm do you predict will have the most rainfall, and why?
Answer:
Tropical storm
Explanation:
The tropical storm have the most rainfall because tropical winds will increase in strength as temperatures rise. With the increase in temperature, the tropical storms have stronger winds which leads to produce higher rainfall. There is a direct relationship between temperature and amount of rainfall. As the temperature increases, the tropical storms have stronger winds which leads to more rainfall while on the other hand, decrease in temperature decrease the strength of the tropical storm's winds that leads to lower rainfall.
The temperature given shows that the storm that will be predicted is a tropical storm.
What is temperature?It should be noted that temperature means the degree of hotness or coldness in a body.
In this case, since the temperature of the areas surrounding Kochi before each storm was about 10°C and there was the same amount of water vapor in the air, the appropriate storm is a tropical storm.
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What is one benefit that nuclear power plants currently provide for our environment? O A. They provide energy while increasing natural gas pollution. B. They provide energy while increasing biomass by-products. OC. They provide energy without increasing carbon dioxide emissions. OD. They provide energy without increasing nuclear waste.
What may cause a species to become less genetically diverse?
A. Isolation from members of its species
B. Low population numbers
C. Both isolation and low population numbers
D. None of these
"science"
Answer:
b i think im not fully sure
Explanation:
Answer:
C- Both isolation and low population
Explanation:
90 percent sure
Metals that can't react with dilute acids
Answer:
Silver and gold do not react with dilute acids. The metals like Cu,Au,Ag are less reactive than hydrogen. They do not displace hydrogen from dilute acids. Those metals which are above in the reactivity series displace hydrogen from dilute acids.
Explanation:
How is the process of natural selection different from the process of selective breeding?
Answer:
Explanation:
The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. For this reason selective breeding is sometimes called artificial selection. Different varieties of plants and animals with desired characteristics can be developed by selective breeding.
On the basis of your data, what elements could be responsible for each of these colored flames? Be specific.
Answer:
The answer is "Red- Lithium and Green- Copper".
Explanation:
The RedLithium is using in the batterie, which substituted the M12 and M18 lithium-ion packs as were first introduced in 2010. Milwaukee RedLithium power generation, in a nutshell, combines electronic systems, temperature resilience, or control that produce reliable, consistent electricity. This device outlasts all the other skilled battery cells, thinks faster, and works harder.
Its greenish light is a natural hue of a patina that forms over the surface layer; the patina covers its copper and produces a beautiful bluish-green facade shown on many copper rooftops or structures.
7. What is the molarity, M, of the dilution solution of KBr, given:
a. Molarity of the stock solution is 0.500 M KBr
b. Volume of the stock solution is 20.00 mL
c. Volume of the dilute solution is 100.00 mL
Answer:
Hello There!!
Explanation:
I believe the answer is c. Volume of the dilute solution is 100.00 mL.
hope this helps,have a great day!!
~Pinky~
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c. Volume of the dilute solution is 100.00 mL.
ThanksHope it helps.Find the molecular formula for CH that has a molecular weight of 65g.
Answer: Molecular Formula is C5H5
Explanation: M(CH) = 13.018 g/mol
Empirical formula of compound is (CH)x in which x = 2,3,4,...
Molar mass of the substance is 65 g. x = 65 g/mol : 13 g/mol = 5
Calculate the molarity of an HCl solution if 25.0 mL of the solution is neutralized by 15.5 mL of 0.800 M NaOH. Below is the unbalanced equation: ______ HCl + _____ NaOH →____ H2O + _____ NaCl
Answer:
.496 M .
Explanation:
15.5 mL of .8 M NaOH will contain .0155 x .8 moles of NaOH
moles of NaOH = .0124 moles
For neutralization, moles contained by 25 mL of HCl = .0124
Hence molarity of HCl = .0124 / .025
= .496 M .
0.496 M is the molarity of an HCl solution if 25.0 mL of the solution is neutralized by 15.5 mL of 0.800 M NaOH.
What is molarity?Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution.
Molarity = [tex]\frac{Moles \;solute}{Volume of solution in litre}[/tex]
15.5 mL of 0.8 M NaOH will contain 0.0155 x 0.8 moles of NaOH
Moles of NaOH = 0.0124 moles
For neutralization, moles contained by 25 mL of HCl = 0.0124
Hence molarity of HCl = [tex]\frac{0.0124}{0.025}[/tex]
= 0.496 M .
Hence, 0.496 M is the molarity of an HCl solution if 25.0 mL of the solution is neutralized by 15.5 mL of 0.800 M NaOH.
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PLEASE HELPPP!!!! THANK YOUUU!!!!
You have the correct answer
86.30 mL of an HCl solution was required to neutralize 31.75 mL of 0.150 M NaOH. Determine the molarity of the HCI.
Answer:
0.055M
Explanation:
Using the formula as follows:
CaVa = CbVb
Where;
Ca = concentration of acid (M)
Cb = concentration of base (M)
Va = volume of acid (mL)
Vb = volume of base (mL)
According to the information given in this question, Ca (HCl) = ?, Cb (NaOH) = 0.150, Va (HCl) = 86.30mL, Vb (NaOH) = 31.75mL
Using CaVa = CbVb
Ca = CbVb ÷ Va
Ca = (0.150 × 31.75) ÷ 86.30
Ca = 4.7625 ÷ 86.30
Ca = 0.055M
Given the balanced equation representing a reaction:
H2SO3 + H2O « H3O+ + HSO3-
According to one acid-base theory, the H2SO3 molecules act as (AKS 5g)
Answer:
An acid because they donate H^+ ions
Explanation:
Let us look at the equation again;
H2SO3 + H2O « H3O+ + HSO3-
An acid donates hydrogen ion while a base accepts hydrogen ion. Hence, we have to look at which species that acted as hydrogen ion donors or acceptors.
We can clearly see that H2SO3 acted as a hydrogen ion donor while H2O acted as a hydrogen ion acceptor.
Thus, H2SO3 acted as an acid by donating hydrogen ions.
6. What category of elements is found between the metals and nonmetals
on the periodic table?
A synthetic
B. metalloids
C. radioactive
D. noble gases
Answer:
B. metalloids
Explanation:
The metalloids are found between metals and non-metals on the periodic table.
Metalloids have properties between those of metals and non-metals. Under certain prevalent conditions, they exhibit a set of properties.
Synthetic substances are those artificially made, they are not found on the periodic table.
Noble gases are found in the last group on the periodic table.
Radioactive substances are found in the lanthanide and actinide series.
A fuse is a safety device that stops the flow of electricity when a circuit overheats
Answer:
Fuses are built as a safety measure if there is too much current flowing through a circuit. ... However, if an electrical current exceeds the maximum current allowed within that fuse it will overheat and cause the metal strip to melt. The destroyed metal strip breaks the connection and stops electricity flowing through.
Need help fast! Would love if you could explain... but if not that’s ok
A molecule contains 52.20 grams of manganese and 3.80 g of carbon what is its empirical formula
MnC3
Mn3C
Answer: Mn3C is the corrects answer
Trust me :)
A gas has a volume of 1.22L at 179K. Once heated, the same gas now has a volume of 6.1L at 285K and 1.34atm. What was the original pressure of the gas?
HELP PLEASE CHEMISTRY!!!!
Answer:
amını sike bilirim tabi verirsen
What is the product of the reduction of an aldehyde?
Answer:
Achol
Explanation:
Reduction of other aldehydes gives primary alcohols. Reduction of ketones gives secondary alcohols. The acidic work-up converts an intermediate metal alkoxide salt into the desired alcohol via a simple acid base reaction.
¿Cómo se llama el proceso en donde se transforma el oxígeno en dióxido de carbono
Answer:
respiración
Explanation:
Calculate the specific heat capacity of the unknown metal given the
following information; the mass of the metal is 225 g, the temperature
raises by 13C and the energy absorbed was 1363 joules.
A. 0.466 j/gC
B.1.02j/gC
C.0.96 j/gC
D.2.14 j/gC
Answer: The specific heat capacity of the unknown metal given is [tex]0.466 J/g^{o}C[/tex].
Explanation:
Given: Mass = 225 g
Change in temperature = [tex]13^{o}C[/tex]
Heat energy = 1363 J
The formula used to calculate specific heat is as follows.
[tex]q = m \times C \times \Delta T[/tex]
where,
q = heat energy
m = mass of substance
C = specific heat
[tex]\Delta T[/tex] = change in temperature
Substitute the values into above formula as follows.
[tex]q = m \times C \times \Delta T\\1363 J = 225 g \times C \times 13^{o}C\\C = \frac{1363 J}{225 g \times 13^{o}C}\\= 0.466 J/g^{o}C[/tex]
Thus, we can conclude that the specific heat capacity of the unknown metal given is [tex]0.466 J/g^{o}C[/tex].
Two children bring home a salt-water fish for their new fish tank. The children are eager to put their fish into the new fish tank, but have to
create a salt water solution to fill the tank first. The children plan to compete to see whose solution will be finished first.
Particle Size of Salt
Temperature of Solvent
Level of Agitation
Solution A
Sea salt (small clumps)
Cold water
Slow stirring
Solution B
Granular salt (tiny grains)
Hot water
Fast stirring
What do you believe the outcome will be from these solutions?
O A Solution A will take less time to dissolve, because gently stirring will allow it to combine more evenly
OB Solution will take less time to dissolve, because hot water will cause some of the salt to evaporate.
O c Solution A will take longer to dissolve and might have some undissolved salt remaining at the bottom of the solution due to the low
temperature.
OD Solution will take longer to dissolve and might have some undissolved salt remaining at the bottom of the solution due to the
high temperature
According to the concept of solubility, solution A will take less time to dissolve, because hot water will cause some of the salt to evaporate.
What is solubility?Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
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What are the environmental factors in space that need to be taken into account in the design of electronics?
Answer: Here
Explanation:
trapped and transient radiation, solar and galactic cosmic rays, which can profoundly damage spacecraft electronics are presented
Answer:
Environmental factors including trapped and transient radiation, solar and galactic cosmic rays, which can profoundly damage spacecraft electronics are presented. Some effects such as ionization and atomic displacement damages to semiconductors and single event phenomena are also briefly mentioned.
Explanation:
A gas is held at 120.4 kPa and 333K. When the temperature is decreased to
275K at a constant volume, calculate the new pressure in the container.
Type your answer with the correct number of sig figs and units. *
Help please 100 points!!
Answer:
....
Explanation:
If you start with 6 moles of N2 and 6 moles of H2 (meaning you won't have enough of 1 of the ingredients), how many moles of NH3 would you be able to make?
Answer:
[tex]4molNH_3[/tex]
Explanation:
Hello there!
In this case, according to the given information it will be firstly necessary to set up the chemical equation taking place:
[tex]N_2+3H_3\rightarrow 2NH_3[/tex]
We infer we need to calculate the moles of NH3 by using both of the moles of N2 and H2 at the beginning, in order to identify the limiting reactant:
[tex]n_{NH_3}=6molN_2*\frac{2molNH_3}{1molN_2}=12molNH_3\\\\ n_{NH_3}=6molH_2*\frac{2molNH_3}{3molH_2}=4molNH_3\\[/tex]
Thus, since hydrogen yields the fewest moles of ammonia, we conclude that we are just able to yield 4 moles of NH3.
Regards!
Write out the chemical formula for solid aluminun
Answer:Al
Explanation:
A student designed an experiment to test the effect on the magnitude of the magnetic field that is generated around the wire loop. The student increased the current that passes through the wire and tests the magnitude of the magnetic force that is generated. The experimental setup is shown here. Which statements accurately describe this experimental design? Select ALL that apply. A) The student's dependent variable is the size of the wire loop. B) The student's independent variable is the size of the wire loop. C) The student's dependent variable is the magnitude of the magnetic field that is generated. D) The student's independent variable is the magnitude of the magnetic field that is generated. E) The student's independent variable is the amount of current that is being passed through the wire.
Answer:
C
Explanation: