Answer:
30%
Explanation:
The relative humidity is the water-vapor content of the air relative to its content at saturation. Saturated air, for example, has a relative humidity of 100 percent, and near the Earth, the relative humidity very rarely falls below 30 percent.
what are difference between graphite and diamond
Answer:
[tex]Diffrence \: between \: graphite \: and \: diamond [/tex]
[tex]\qquad \huge{\sf{point \: 1}} ➫[/tex]
⇛Graphite is soft in nature
⇛Diamond is hardest substance
[tex]\qquad \huge{\sf{point \: 2}} ➫[/tex]
⇛Graphite is a good conductor
⇛Diamond is not a conductor
[tex]\qquad \huge{\sf{point \: 3}} ➫[/tex]
⇛Graphite is grey in colour
⇛Diamond have transperant look
[tex]\qquad \huge{\sf{point \: 4}} ➫[/tex]
⇛Graphite have SP² hybridization
⇛Diamond have SP³ hybridization
[tex]\qquad \huge{\sf{point \: 5}} ➫[/tex]
⇛Graphite have layered structure
⇛Diamond have crystalline structure
Please, I need this now.
Drag each label to the correct location on the image.
Match each situation to the circuit diagram that represents it.
Answer: if anyone needs it <3
Explanation:
Uranium-235 has a half-life of 713 million years. Would uranium-235 or carbon-14 be more useful for dating a fossil from Precambrian time? please help im lost on this and its due tomorrow!
Uranium-235 which has a half-life of 713 million years will best suited in dating a fossil from Precambrian time.
What is a Fossil?Thi8s is defined as a trace of an animal or plant of a past geologic age that has been preserved in Earth's crust.
The Precambrian time occurred around 4.6 billions years ago and Uranium-235 which having a half-life of 713 million years means it's more useful when compared to carbon-14 which has a half life of 5,370 years.
Read more about Fossil here https://brainly.com/question/11829803
Part of the complement system of defense is opsonization. This process
causes the pathogen to become trapped in mucus.
coats the pathogen exterior so that it is recognized by the host's phagocytes.
creates an acidic environment that prevents pathogen attachment
causes holes to form in the pathogen's cell walls.
Answer:
The correct answer is coats the pathogen exterior so that it is recognized by the host's phagocytes. :)
To learn more about this, here is a link!!
https://brainly.com/question/13022302?referrer=searchResults
Have an amazing day!!
Please rate and mark brainliest!!!
what is the molar mass of sucrose C12H22O11 , needed to prepare 500 mL of a sugar solution with a concentration of 0.783 mol.
Answer:
342g/mol
Explanation:
Molar mass of carbon=12, hydrogen=1 and oxygen=16
therefore C12H22O11=12(12)+22(1)+11(16)
=144+22+176
=342g/mol
helpp
What also increases as the resistance in a longer wire increases?
A. Voltage
B. Charges
C. Temperature
D. Current
I will mark brainlist
If the colored spheres represent different solute particles, based on the principles of osmosis, in which overall direction is water (not pictured) most likely to move?
A.
Water will move into the cell.
B.
Water will not move into or out of the cell.
C.
Water will move into and out of the cell equally.
D.
Water will move out of the cell.
Water will move into the cell because of lower concentration of water inside the cell as compared to outside.
Why water moves inside or outside of the cell?Water has a tendency to move across a membrane from a lower osmolarity to a higher osmolarity which means from higher concentration region to the lower concentrated region.
So we can conclude that water will move into the cell due to lower concentration of water inside the cell as compared to outside.
Learn more about cell here: https://brainly.com/question/13123319
Answer:
If you're from study island, the answer is D. Water will move out of the cell.
Explanation:
I got it on study island and this was right.
It’s not a chemistry question but there is no Science Option. Pls help!
Question:
What are some ways we use greenhouse gases and how we can prevent it
Select all of the following which are Nitrogenous bases that make up DNA:
a)Glutamine
b)Thymine
c)Adenine
d)Thyrine
e)Guanine
f)Cytosine
Answer:
adenine (A, green), thymine (T, red), cytosine (C, orange), and guanine (G, blue).
Explanation:
The nitrogen bases in a DNA molecule are adenine, guanine, cytosine, and thymine. Adenine and guanine belong to a class of compounds called purines, and cytosine and thymine belong to a class of compounds called pyrimidines. In a DNA molecule, the two strands are connecting by hydrogen bonds between the nitrogen bases of each strand. According to the base-pairing rule, the purine adenine always pairs with the pyrimidine thymine, and the purine guanine always pairs with the pyrimidine cytosine...
I need help with this one.
Magnesium and Calcium Oxide
Trick : Reactants are always on left
Answer:
magnesium and calcium oxide
What are the three types of stresses that can be applied to
a system at equilibrium?
Answer:
The 3 stressers are 1. Adding or removing reactants or products. 2. Changing the total pressure or volume. 3. changing the tempature of the system.
Explanation:
All three of these are stressers that can be applied.
-Hope This Helps!
-Justin:)
Equation for the hydrolysis of glyceryl triethanoate.
The equation for the hydrolysis of glyceryl triethanoate is C3H5(OH)3 + 3CH3COOH = C3H3(OCOCH3)3 + HOCH2CH(OH)CH2OH
What is Hydrolysis?Hydrolysis is a chemical reaction which water molecule break down one or more chemical bonds. This is use for substitution, elimination, and solubility.
Hydrolysis depend on the pH, solubility and chemical constituent of the substance.
Therefore, The equation for the hydrolysis of glyceryl triethanoate is C3H5(OH)3 + 3CH3COOH = C3H3(OCOCH3)3 + HOCH2CH(OH)CH2OH
Learn more about Hydrolysis below.
https://brainly.com/question/1403345
Please help me for this
Answer:
it says tick the box next to the correct answer so it'd be right to tick the last box:
The particles of the gas slow down
Describe the change of state using kinetic theory
Explanation:
According to kinetic molecular theory,changes of the state of matter occur when energy is added or removed from a substance
According to the Kinetic-Molecular Theory, changes of the state of matter occur when energy is added or removed from a substance. The addition of energy makes particles move more, pushing them apart and weakening the bonds between them. Removing energy makes particle movement slow down, re-forming the bonds.
How does a noncompetitive inhibitor decrease the rate of an enzyme-catalyzed reaction?.
Answer:
In fact, the inhibitor and substrate don't affect one another's binding to the enzyme at all. However, when the inhibitor is bound, the enzyme cannot catalyze its reaction to produce a product. Thus, noncompetitive inhibition acts by reducing the number of functional enzyme molecules that can carry out a reaction.
The graph above shows the titration curve that resulted when a sample of 0.1 M monoprotic acid was titrated with a solution of NaOH. Based on the graph, the pKa of the acid is closest to
(A) 3.0
(B) 4.0
(C) 6.0
(D) 8.0
(E) 12.0
Based on the titration curve of the monoprotic acid, pKa of the monoprotic acid is closest to 8.0.
What is a titration curve of acid?A titration curve of an acid is a curve obtained from the plot of the pH against the amount of base added.
The titration curve of an acid reveals its pKa.
The pKa corresponds to the midpoint of titration when equal concentrations of the acid and base have reacted.
From the titration curve above, the pKa of the monoprotic acid is closest to 8.0.
Learn more about titration curve and pKa at: https://brainly.com/question/3130161
https://brainly.com/question/22390063
help me my homework pls
Answer:
1. Boron B 13 2 Non-Metal
2. Aluminium Al 13 3 Metal
3. Tin Sn 14 5 Metal
4. Helium He 18 1 Non- Metal
5. Neon Ne 18 2 Non- Metal
6. Calcium Ca 2 4 Metal
7. Francium Fr 1 7 Metal
8. Gold Au 11 6 Metal
The pressure of a gas sample at 60.0 °C is decreased from 3.40 atm to 2.60 atm by cooling at a constant volume. What is the temperature (in °C) of the gas at 2.60 atm?
When the pressure of a gas is decreased from 3.40 atm to 2.60 atm, the temperature of the gas will decrease from 60.0 degree celsius to 45.88 degree celsius.
What is Gay-Lussac law?Gay -Lussac law states that the pressure and temperature is in direct proportions. Thus, pressure increases with an increase in temperature. The relation can be mathematically expressed as follows:
P/T = a constant. Hence,
P1/T1 = P2/T2
The initial pressure of the sample is given, 3.46 atm and the initial temperature is 60 °C. The final temperature of the gas when gas the expand to the lower pressure of 2.60 atm is calculated as follows:
[tex]T_{2} = \frac{P_{2}T_{1}}{P_{1}}[/tex]
= (60 °C× 2.60 atm) / 3.40 atm
= 45.88 °C.
Hence, the final temperature of the gas which is expanded from the pressure of 3.40 atm to 2.60 atm with an initial temperature of 60 °C is 45.88 °C.
To find more about Gay-Lussac law, refer the link below:
https://brainly.com/question/2683502
#SPJ2
Which statement is true of a mechanical wave? a It must have a medium.
b It can travel in a vacuum.
c It must travel in empty space.
d Both sound and light are examples.
Answer:
The answer is A. It must have a medium
Explanation:
With out a medium the wave will not travel at all.
-Hope This Helps!
-Justin:)
When we react an acid with a base a neutralisation reaction occurs.
What pH do you end up with?
Explanation:
Good question!
When you react an acid with a base,the pH of the product is determined by the concentrations of the reactants (the acid and the base)
If both reactants (acid and base) are strong,the pH of the product is 7
If the acid is stronger than the base,the pH of the product will be less than 7
If the base is stronger,the pH of the product will be greater than 7
I hope this helps
HELP PLS (IT IS NOT THE THIRD ONE)
Answer:
A. would be your answer
Explanation:
Decomposers are especially important in retaining nutrients in their cells thus preventing loss of those nutrients from the root zone.
In an ecosystem, the decomposing web is important because decomposers help remove waste and use that energy to provide food for other animals.
What is an ecosystem?An ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass which is present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
Learn more about ecosystem,here:
https://brainly.com/question/13979184
#SPJ7
The weak ionization constant (Ka)
for HF is equal to:
[H3O][F]
[HFJ[H20]
[HF]
[F-][H30+]
Please help
Answer:
[tex]\displaystyle K_a = \frac{[\text{H$_3$O}^+][\text{F}^-]}{[\text{HF}]}[/tex]
Explanation:
Write the reaction of HF (a weak acid) with water:
[tex]\displaystyle \text{HF}_\text{(aq)} + \text{H$_2$O}_\text{($\ell$)} \rightleftharpoons \text{H$_3$O}^+_\text{(aq)} + \text{F}^-_\text{(aq)}[/tex]
Recall that the equilibrium constant expression for an equilibrium reaction is the product of the concentration of the products over the product of the concentration of the reactants raised to their respective coefficients.
The equilibrium constant expression for this equation will hence be:
[tex]\displaystyle K_a = \frac{[\text{H$_3$O}^+][\text{F}^-]}{[\text{HF}]}[/tex]
Note that pure solids and liquids are not included in the equilibrium expression.
In conclusion:
[tex]\displaystyle K_a = \frac{[\text{H$_3$O}^+][\text{F}^-]}{[\text{HF}]}[/tex]
Explain in complete sentences why
how the oceans are fundamental to all life on Earth
Answer:
The oceans are the very foundation of human life. life itself arose from the oceans. The oceans are vast, covering about 140 million square miles, some covering 72 percent of the earth's surface.
Explanation:
The solubility of a gas is 0.890 g/L at a pressure of 120 kPa. What is the solubility of the gas if the pressure is changed to 100 kPa, given that the temperature is held constant?
The solubility of the gas if the pressure is changed to 100 kPa is 0.742 g/L
Effect of Pressure on SolubilityAs the pressure of a gas increases, the solubility increases, and as the pressure of a gas decreases, the solubility decreases.
Thus, Solubility varies directly with Pressure
If S represents Solubility and P represents Pressure,
Then we can write that
S ∝ P
Introducing proportionality constant, k
S = kP
S/P = k
∴ We can write that
[tex]\frac{S_{1} }{P_{1} } = \frac{S_{2} }{P_{2} }[/tex]
Where [tex]S_{1}[/tex] is the initial solubility
[tex]P_{1}[/tex] is the initial pressure
[tex]S_{2}[/tex] is the final solubility
[tex]P_{2}[/tex] is the final pressure
From the given information
[tex]S_{1} = 0.890 \ g/L[/tex]
[tex]P_{1} = 120 \ kPa[/tex]
[tex]P_{2} = 100 \ kPa[/tex]
Putting the parameters into the formula, we get
[tex]\frac{0.890}{120}=\frac{S_{2}}{100}[/tex]
[tex]S_{2}= \frac{0.890 \times 100}{120}[/tex]
[tex]S_{2}= 0.742 \ g/L[/tex]
Hence, the solubility of the gas if the pressure is changed to 100 kPa is 0.742 g/L
Learn more on Solubility here: https://brainly.com/question/4529762
Particles 91, 92, and q3 are in a straight line.
Particles q1 = -28.1 uc, q2 = +25.5 uc, and
q3 = -47.9 uc. Particles qi and q2 are separated
by 0.300 m. Particles q2 and q3 are separated by
0.300 m. What is the net force on q3?
Remember: Negative forces (-F) will point Left
Positive forces (+F) will point Right
The net force on particle 3 due to the presence of particle 1 and particle 2 on the same straight line is 50.5 N to the right.
Force between particle 1 and particle 2
The force between the two particles is determined from Coulomb's law as shown below;
F = kq₁q₂/r²
F(1,2) = -(9 x 10⁹ x 28.1 x 10⁻⁶ x 25.5 x 10⁻⁶) / (0.3)²
F(1,2) = - 71.66 N
Force between particle 2 and particle 3F(2,3) = + (9 x 10⁹ x 25.5 x 10⁻⁶ x 47.9 x 10⁻⁶) / (0.3)²
F(2,3) = + 122.15 N
Net force on particle 3The net force on particle 3 is determined as follows;
F(net) = 122.15 N - 71.66 N
F(net) = + 50.5 N
Thus, the net force on particle 3 due to the presence of particle 1 and particle 2 on the same straight line is 50.5 N to the right.
Learn more about net force here: https://brainly.com/question/14361879
What is the molarity of a 250. mL H, SO4 solution that was made from a 20.0 mL of a 10.0 M stock solution?
F) 0.800M
G)1.25M
H)125M
J)500. M
The molarity of a 250. mL H2SO4 solution that was made from a 20.0 mL of a 10.0 M stock solution is 0.8M.
How to calculate molarity?The molarity of a solution can be calculated using the following expression:
CaVa = CbVb
Where;
Ca = concentration of acidCb = concentration of baseVa = volume of acidVb = volume of baseIn this question;
Ca = ?Va = 250mLCb = 10MVb = 20mLCa × 250 = 10 × 20
250Ca = 200
Ca = 200/250
Ca = 0.8M
Therefore, the molarity of a 250. mL H2SO4 solution that was made from a 20.0 mL of a 10.0 M stock solution is 0.8M.
Learn more about molarity at: https://brainly.com/question/2817451
Explain 3 sources of carbon dioxide production and explain how the production of CO2 can lead to global warming.
Answer:
Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.
Explanation:
3. Which of the following sentences apply to neutrons? a. have a negative charge. b. circle around the atom nucleus. c. are the only particles that form the nucleus. d. have a mass of 1 amu. SA 2
Answer:
d.have a mass of 1 amu..
Explanation:
Does not match a as the answer for a is electrons B.electron circle around the nucleus because neutrons are inside the nucleus.C.proton and neutrons make the nucleus so the only answer left is .d .which is correct
Answer:c are the only are the only particle that form the nucleus
Explanation:
Which of the following best
explains why matter changes
from one phase to another?
A. Changes in color causes matter to change
phase.
B. Changes in size causes matter to change
phase.
C. Changes in energy causes matter to change
phase.
D. Changes in volume causes matter to change
phase.
Answer:
c changes in energy causes matter to change
HELPPPPPPPPP!!!!....... Which statement best describes how chemical equations demonstrate conservation of mass?
A.
The number of reactants is the same as the number of products.
B.
The compounds are the same on each side of the reaction.
C.
The number of atoms of each element is the same on each side of the equation.
D.
The state of matter is the same on each side of the equation.Which details from the passage are emphasized in both the text and images?
Answer:
A. The mass of reactants is the same as the mass of products