Answer:
If the tilt of the Earth's axis is changed there would be a change in the season because the season is caused by the Earth's tilt (23.5 degrees) and the revolution or orbit.
The tilt in earth axis changes the season because season change is caused by 23.5 ° tilted axis of earth and the resolution or orbit.
What is resolution?Resolution is defined as a measure used to describe the sharpness and clarity of a pictures or images.
Resolution can also be known as optical resolution and chiral resolution.
It can be defined as any process by which a racemic mixture is separated into its two constituent enantiomer.
There are mainly three types of resolution.
Ordinary resolutionUnexpected resolutionSpecial resolutionWith the tilt in earth axis there is formation of season which causes change in season.
Thus, the tilt in earth axis changes the season because season change is caused by 23.5 ° tilted axis of earth and the resolution or orbit.
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Describe your observations of how the waves are behaving in the photograph.
Answer:
The waves are behaving this way due to the simultaneous water drops landing in the water.
Explanation:
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1. Make a claim that answers the following question: "What is the
connection between the number of valence electrons and
chemical/physical properties?" *
Lets take an example to explain this
Sodium(Na) has 1 electron in its outer or valence shell hence it will lose it and become a cation say to Chlorine(Cl)
To form Sodium Chloride.
Since it is capable of losing electrons, Sodium becoems a metal and has properties of metal
Whereas Chlorine which has 7 electrons in its valence shell gains an electrons to become an anion
Hence it is a non metal
And has the properties of an anion
What is the amount of moles of NaOH, if the solution molarity is .33 M NaOH in 0.75 L solution
Answer:
The amount of moles of NaOH is 0.0495
Explanation:
Molarity is a measure of concentration that is defined as the number of moles of solute that are dissolved in a given volume.
In symbolic form molarity is presented as:
[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].
In this case:
Molarity= 0.33 MNumber of moles of solute= ?Volume= 0.75 LReplacing in the definition of molarity:
[tex]0.33 M=\frac{number of moles of solute}{0.75 L}[/tex]
number of moles of solute= 0.33 M* 0.75 L
number of moles of solute= 0.0495 moles
The amount of moles of NaOH is 0.0495
Answer:
0.248 moles of NaOH
Explanation:
Concept of Molarity is mol/L
[x] = 1 M
1 mol of x contained in 1 L of solution. We write molar concentrations between []
M = mol/L then M . L = mol
Our solution is NaOH
0.33 M . 0.75L = mol
This solution contains 0.248 moles of NaOH
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Can someone please help me with this???
A sample of gas is inside of a rigid container with fixed volume of 350mL. The initial pressure of the system is 366kPa, and the initial temperature is 88 degrees Celsius. How would the pressure of the system change if the temperature was increased to 110 degrees Celsius?
Answer:
457.5kPa
Explanation:
Given data
V1=V2=350mL (fixed volume )
P1=366kPa
T1= 88 degrees Celsius
P2=??
T2= 110 degrees Celsius
For the general gas equation
P1V1/T1= P2V2/T2
V1=V2
P1/T1= P2/T2
Substitute
366/88= P2/110
Cross multiply we have
P2*88=366*110
P2*88= 40260
P2= 40260/88
P2= 457.5 kPa
Hence the pressure will change to 457.5kPa
name two enzyme used to make alcohol
Answer:
here is your answer
Cellulase and proteases are two enzymes are used for making alcohol
hope it helps you
Explanation:
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Explain how the iron pipes change into rust?
Explain why there would be a need for lithium batteries?
Answer:
The much higher power density offered by lithium ion batteries is a distinct advantage. Electric vehicles also need a battery technology that has a high energy density. ... Lithium ion cells is that their rate of self-discharge is much lower than that of other rechargeable cells such as Ni-Cad and NiMH forms.
Put this into your own words or teachers will make you redo it
Which of the following describes a crystal? *
A homogeneous solid
has a highly ordered microscopic structure
has a geometrically regular form
All of the options describe crystals
Answer:
has a highly ordered microscopic structure
Que representa en la reacción química
Na2SO4(s)+H2O(1)=
Answer: The given reaction is a double displacement reaction.
Explanation:
A chemical reaction equation in which both positive and negative ions of two different reactants are exchanged then it is called a double displacement reaction.
For example, [tex]Na_{2}SO_{4} + H_{2}O \rightarrow H_{2}SO_{4} + Na_{2}O[/tex]
Here, hydrogen ions of [tex]H_{2}O[/tex] are replaced by the sodium ions of [tex]Na_{2}SO_{4}[/tex]. Also, sulfate ion of [tex]Na_{2}SO_{4}[/tex] are replaced by oxygen ion of [tex]H_{2}O[/tex].
Thus, we can conclude that the given reaction is a double displacement reaction.
A solution is 5.00% by volume of ethanol dissolved in water. How many mL of ethanol are in 500 mL of the solution?
Answer:
[tex]v_{solute}=25mL[/tex]
Explanation:
Hello there!
In this case, according to the by-volume concentration of this solution, it is possible for us to use its mathematical definition as shown below:
[tex]\%v=\frac{v_{solute}}{v_{solution}}*100\%[/tex]
Thus, given the percent and the volume of the solution, we can solve for the volume of ethanol (solute) as shown below:
[tex]v_{solute}=\frac{\%v*v_{solution}}{100\% }\\\\v_{solute}=\frac{5.00\%*500mL}{100\%}\\\\ v_{solute}=25mL[/tex]
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When calcium carbonate is heated strongly, carbon dioxide gas is evolved. CaCO3(s) → CaO(s) + CO2 (g) If 4.74 g of calcium carbonate is heated, what volume of CO2 (g) would be produced when collected at STP?
Answer:
1.06 liters of gas are produced
Explanation:
Our reaction is:
CaCO₃(s) → CaO(s) + CO₂ (g)
This is the decomposition of calcium carbonate.
Ratio is 1:1:1
1 mol of carbonate can decompose to 1 mol of oxide and 1 mol of oxygen.
We convert mass to moles:
4.74 g . 1 mol /100.08g = 0.0474 moles
These are the moles of oxygen produced.
We know that 1 mol of any gas at STP is contained in 22.4L
0.0474 mol . 22.4L /mol = 1.06 L
Which two radioisotopes have the same decay mode?
A)220Fr and 60C0
B)37K and 42K
C)37Ca and 53Fe
D)99Tc and 19Ne
Answer:
c
Explanation:
37Ca and 53Fe have the same decay mode.
What are the three common modes of radioactive decay?Three of the most common types of decay are alpha decay (α-decay), beta decay (β-decay), and gamma decay (γ-decay), all of which involve emitting one or more particles.
Which isotopes are most likely to decay?The most likely mode of decay for a neutron-rich nucleus is one that converts a neutron into a proton. Every neutron-rich radioactive isotope with an atomic number smaller than 83 decays by electron emission. C, 32P, and 35S, for example, are all neutron-rich nuclei that decay by the emission of an electron.
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A gas of certain mass occupies volume of 1.2 L at 37°C and 3 atm. At what temperature will the volume and pressure of this gas become one-third of their initial values?
Answer: At a temperature of 34.44 K the volume and pressure of this gas become one-third of their initial values.
Explanation:
Given : [tex]V_{1}[/tex] = 1.2 L, [tex]T_{1} = 37^{o}C = (37 + 273) K = 310 K[/tex]
[tex]P_{1}[/tex] = 3 atm, [tex]V_{2} = \frac{1.2}{3} = 0.4 L[/tex] , [tex]P_{2} = \frac{3}{3} = 1 atm[/tex]
Formula used to calculate the final temperature is as follows.
[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}[/tex]
Substitute the values into above formula as follows.
[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\\\frac{3 atm \times 1.2 L}{310 K} = \frac{1 atm \times 0.4 L}{T_{2}}\\T_{2} = \frac{1 atm \times 0.4 L \times 310 K}{3 atm \times 1.2 L}\\= \frac{124}{3.6} K\\= 34.44 K[/tex]
Thus, we can conclude that the final temperature is 34.44 K.
Hi can anyone help me ?
Answer:
its 4
Explanation:
What reactants form a combustion reaction?
Answer:
Hydrocarbon and oxygen
Explanation:
"a substance reacts with oxygen gas, it must involve O² as one of the reactants."
Using this, we can confirm Hydrocarbon and oxygen is a valid one.
identify the state of matter in the box,
Answer:
gas
Explanation:
particles are very far apart
The given diagram represents gaseous state of matter. Both a volume and a definite form are absent from a gas. The separation of gas particles is great.
What is state of matter?Solids, liquids, gases, plus plasma are the four states of matter that may be found in daily life. However, a number of additional states of matter have indeed been found.
Some of these additional states are created when a material transitions among two states of matter and doesn't actually exhibit the characteristics of either state. The most exotic are others. Both a volume and a definite form are absent from a gas. The separation of gas particles is great. The gas in a balloon and the air are two examples of gases. The given diagram represents gaseous state of matter.
Therefore, the given diagram represents gaseous state of matter.
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When the medium is uniform, how do light waves travel through it? vibrating motion circular motion irregular motion straight line motion
Answer:
straight line
Explanation:
Answer:
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Explanation:
in which of these compounds are there twice as many oxygen atoms as hydrogen atoms?
Answer:
G - H2SO4
Explanation:
two hydrogen atoms and 4 oxygen atoms
How many calories of heat were added to 167.9 g of water to raise its temperature from 25oC to 55oC?
Answer:
Q = 5036.9 calories
Explanation:
Given that,
Mass, m = 167.9 g
The temperature raises from 25°C to 55°C.
The specific heat of water,c = 4.184 J/g °C
We need to find the heat added to water. We know that,
[tex]Q=mc\Delta T\\\\=167.9 \times 4.184\times (55-25)\\\\=21074.8\ J[/tex]
or
Q = 5036.9 calories
So, 5036.9 calories of heat is added.
what is 1 mol / 66.04g
Answer:
15.142338 mol/kg
Explanation:
(1 mole) / (66.04 grams)
2.5 liters of gas is stored at a pressure of 100 atm, if the volume were increased to 4 liters, what would be the new pressure?
a. 250 atm
b. 1000 atm
c. 62.5 atm
d. 160 atm
Answer:
62. 5
Explanation:
Use P1V1=P2V2
100 × 2.5 =250 /4=62.5
What is the molarity of a 511 ml solution containing
205 mg of NH3?
401M 0.0235M 0.401M 0.0000235M
aluminum oxide solube or insolube
Answer:
Reaction with water: Aluminum oxide is insoluble in water and does not react like sodium oxide and magnesium oxide.
Which might cause someone to be exempt from soccer practice? *
a. an injury
b. a previous absence
Answer:
injury
Explanation:
because get hurt we can say injury
17. If the pOH of a solution is 4.5, What is the pH ?
A) 8.5
B) 7.5
C) 9.5
D) 7.0
Answer:
C)9.5
Explanation:
Given poH=4.5
find ph
from 14=ph+poh
14=ph+4.5
ph=9.5
how much heat is required to increase the temperature of 20 grams of water by 26 degrees celsius?
Answer: 2175.68 J heat is required to increase the temperature of 20 grams of water by 26 degrees celsius.
Explanation:
Given: Mass = 20 g
Change in temperature = [tex]26^{o}C[/tex]
The standard value of specific heat of water is [tex]4.184 J/ g^{o}C[/tex]
Formula used to calculate the heat energy is as follows.
[tex]q = m \times C \times \Delta T[/tex]
where,
q = heat energy
m = mass of substance
C = specific heat of substance
[tex]\Delta T[/tex] = change in temperature
Substitute the values into above formula as follows.
[tex]q = m \times C \times \Delta T\\= 20 g \times 4.184 J/g ^{o}C \times 26^{o}C\\= 2175.68 J[/tex]
Thus, we can conclude that 2175.68 J heat is required to increase the temperature of 20 grams of water by 26 degrees celsius.
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Answer:
no pics sorry. v vc. gkfgildhrmsykesetksyekuxrux
Which type of star has the greatest temperature on the HR diagram? Question 7 options: Red Supergiants Main Sequence White Dwarfs Red Giants
Answer:
Red supergiant
Explanation:
Their core is the hottest.
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If the scientist measured the mass of the copper cube after it had been in the furnace for one hour what would the cube’s mass probably be? Explain your answer
