Answers
Answer:
The desert should be divided into different types based on its properties. The organisms living in specific type of desert should be named accordingly.
Explanation:
There are usually five major types of desert in the world. Tropical, rainy, semi arid desert, coastal desert and dry desert. There are many different types of organisms living in these deserts. The biodiversity has made it difficult for the humans to analyse and identify the millions of different types. The best way is to organize and name the organisms that live in specific types of deserts.
Related Questions
How can you get the sugar out of the sweet tea?
Freeze the water and the sugar will appear as clumps inside the ice.
Just let the sweet to stand and the sugar will settle to the bottom of the glass.
Heat the water Cevaporating iD and you will be left with the sugar.
Answers
How would you convert the following compounds into butanoic acid using reagents from the table? Use letters from the table to list reagents in the order used (first at the left). Example: ab Reagents a. CrO_3/H_3O^+ b. KMnO^4/H_3O^+ c. 1.LiAIH_4 2. H_3O^+ d. H_3O^+, heat e. KOtBu f. NaOH g. conc. HCI h. Mg/dry ether i. 1. BH_3/THF 2. H_2O_2/NaOH j. 1.CO_2 2. H_3O^+ k. NaCN l. 1. Li 2. Cul
1-Bromopropane________
1-Bromobutane___________
Answers
a. H_3O^+/KBr b. H_3O^+/CrO_3 c. LiAIH_4/H_3O^+ d. H_3O^+/heat e. KOtBu f. NaOH g. Conc. HCl h. Mg/dry ether i. BH_3/THF/H_2O_2/NaOH j. CO_2/H_3O^+ k. NaCN l. Li/Cu
What is bromopropane ?Bromopropane is a type of organic compound, composed of three carbon atoms and two bromine atoms. It is a colorless and flammable gas, with a sweet and pungent odor. It is used as a solvent in many industrial applications, such as in the manufacture of paints and coatings, as well as in some chemical processes. Bromopropane is also used in the production of pharmaceuticals and other compounds. It can be highly toxic if inhaled, and therefore should be handled with caution.
a. H_3O^+ l. 1. Li 2. Cu
b. KMnO_4/H_3O^+ j. 1.CO_2 2. H_3O^+
c. H_3O^+, Heat f. NaOH
d. KOtBu k. NaCN
e. Mg/Dry Ether i. 1. BH_3/THF 2. H_2O_2/NaOH
g. Conc. HCI h. 1.LiAIH_4 2. H_3O^+
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What causes ocean water near the equator to be warmer than ocean water
farther north?
O A. The sun's rays strike the water more directly near the equator.
B. Because of Earth's rotation, gyres near the equator flow clockwise.
C. Deep-sea vents pump steam into the ocean's conveyor belt near
the equator.
D. The water is denser and saltier near the equator, so it holds more
heat.
Answers
Answer:
A. The sun's rays strike the water more directly near the equator.
Explanation:
I pass the test
A solution is prepared by diluting 50.00 mL of 2.575 M solution of HNO3 to 250.00 mL. what is the molarity of the result solution
Answers
Given data:
Initial molarity = 2.575 M
Initial volume = 50 mL = 0.05 L
Final volume = 250.00 mL = 0.25L
Asked for
Final molarity.
To find the molarity of the solution after its dilution, we can use the following formula:
(MV)initial = (MV)final
2.575 * 0.05 = M*0.25
M = 0.13/0.25
Mfinal = 0.52 M
The molarity of the resultant solution will be 0.52 M.
PLEASE ANSWER QUICKLY!!!!
2KI (aq) + Cl₂(g) → 2KCl(aq) + 1₂(g)
What volume of 12 gas forms when
21 L Cl2 react at STP?
[?] L 12
Answers
The volume of 12 gas forms when 21 L Cl2 react at STP is 21 L.
To determine the volume of 12 gas (I assume you mean I2 gas) formed when 21 L of Cl2 reacts at STP (standard temperature and pressure), we need to use the ideal gas law equation.
The ideal gas law equation is given by:
PV = nRT
Where:
P = pressure
V = volume
n = number of moles
R = ideal gas constant
T = temperature
At STP, the pressure is 1 atm, and the temperature is 273.15 K.
From the balanced equation, we can see that the molar ratio between Cl2 and I2 is 1:1. So, if 21 L of Cl2 reacts, it will produce an equal volume of I2 gas.
Given that the volume of Cl2 is 21 L, we can assume the volume of I2 gas formed will also be 21 L.
Therefore, the volume of I2 gas formed is 21 L.
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Give me 10 examples of entropy.
Answers
Answer:
A campfire is an example of entropy. The solid wood burns and becomes ash, smoke and gases, all of which spread energy outwards more easily than the solid fuel. Ice melting, salt or sugar dissolving, making popcorn and boiling water for tea are processes with increasing entropy in your kitchen.
Explanation:
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What is the mass/volume percent of a solution containing 32.6g of CaCl2 in 375mL of water?
Answers
3.88g of NaOH is required to neutralize a spill of hydrochloric acid. A 0.516M solution of NaOH is available for use.
A. Determine the number of moles needed to complete the reaction.
B. What volume of NaOH solution is needed for this reaction?
C. What volume of a stock 1,15M solution would be used to make the solution used in the reaction?
Answers
Answer:
ftb
Explanation:
Consider the reaction
2NO(g) + O2(g) = 2NO2(g)
Suppose that at a particular moment during the reaction nitric oxide
(NO) is reacting at the rate of 0.066 M/s. (a) At what rate is NO2
being formed? (b) At what rate is molecular oxygen reacting?
Answers
Answer:
(a) Rate of formation of NO2 is also 0.066M/s
(b) Rate of reaction of O2 gas is 0.033M/s
Explanation:
(a) in one second, according to the equation,
2 moles of NO combines with 2moles of NO2.
Therefore 0.066M NO will still consume 0.066mole NO2.
(b) According to the equation,
2 moles NO consumes 1 mole O2, 0.0666M will consume 0.0333 mole O2
Reaction type for this equation
R3 Pb + 2 H3PO4 → 3 H2 + 1 Pb3(PO4)2
Answers
Question 1 (5 points)
What is a
phospholipid?
A.) the molecules that make up the cell membrane
B.) the molecules that provide structure to plant cells
C.) the smaller pieces that make up proteins
D.) the waxy layer on plant leaves
Answers
Answer:
A.) the molecules that make up the cell membrane
Explanation:
Phospholipids are the molecules that makes up the cell membrane. They are lipid layers which gives support and regulates the movement of materials in and out of the cell.
The phospholipid is very important for the building of membrane round a cell. They are made up of rich lipid layer which is made up of phosphoric acids, nitrogen base, alcohol and fatty acids.
With these molecules, they are able to stabilize and regulate the movement of materials in and outside of the cell.
Please read the question and choose the correct answer. Thank you.
Answers
The pH of the solution represent in the diagram, given that the solution contains 1 mole of H⁺ is 2 L is 0.3 (option B)
How do i determine the pH of the solution?We'll begin by obtaining the hydrogen ion, H⁺ concentration in the solution. This is shown below:
Mole of H⁺ = 1 moleVolume = 2 LHydrogen ion, H⁺ concentration = ?Concentration = mole / volume
Hydrogen ion, H⁺ concentration = 1 / 2
Hydrogen ion, H⁺ concentration = 0.5 M
Finally, we shall determine the pH of the solution. Details below:
Hydrogen ion concentration [H⁺] = 0.5 MpH of solution = ?pH = -Log [H⁺]
pH = -Log 0.5
pH = 0.3
Thus, we can conclude that the pH of the solution is 0.3 (option B)
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A 108.9 g sample of water absorbs 114.6 calories of heat. The specific heat capacity of water is 1 cal/(g·°C). By how much did the temperature of this sample change, in degrees Celsius?
Answers
Answer:
The temperature of this sample changes by 1.052 degrees Celsius
Explanation:
As we know
\(Q = mc\Delta T\)
Where m is the mass of the substance
c is the specific heat of the substance
and \(\Delta T\) is the change in temperature
Substituting the given values in above equation, we get -
\(114.6 = 108.9 * 1 * \Delta T\\\Delta T = 1.052\)degree Celsius
The temperature of this sample changes by 1.052 degrees Celsius
What else is true about radio waves
Answers
3 moles of hydrogen occupy a volume of 67.20 L, at standard temperature and pressure (STP, 0 ˚C and 760 mmHg). What is the density of hydrogen at STP?
Answers
Answer:
The correct answer is 0.089 g/L ≅ 0.09 g/L
Explanation:
Density is defined as: mass/volume.
From the problem we have:
number of moles = n = 3 mol
volume = V = 67.20 L
We have to calculate the mass. For this, we need the molar mass (MM) of the gas. That is easily calculated from the molar mass of the element hydrogen (H), as we know that hydrogen gas has the molecular formula H₂:
MM(H₂) = 2 x molar mass H = 2 x 1 g/mol = 2 g/mol
Now, we multiply n by MM to obtain the mass (m) of the gas:
m = n x MM(H₂) = 3 mol x 2 g/mol = 6 g
Finally, we calculate the density from the mass and volume:
density = m/V = 6 g/(67.20) = 0.089 g/L ≅ 0.09 g/L
Which measurement occurs last when collecting data to determine the
percentage by mass of a solution?
Answers
mass percent = (mass of element in 1 mole of compound / mass of 1 mole of compound) x 100. The formula for a solution is:
mass percent = (grams of solute / grams of solute plus solvent) x 100. or.
mass percent = (grams of solute / grams of solution) x 100. The final answer is given as %.
Hope this helps!!
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The number in the box is _____ and this is a form of ______ decay.
Answers
The number in the box is 225 and this is a form of beta decay.
What is a beta decay?Beta decay is a nuclear reaction in which a beta particle (electron or positron) is emitted. A beta particle is an energetic electron or positron produced as the result of a nuclear reaction or nuclear decay.
A radioactive decay is any of several processes by which unstable nuclei emit subatomic particles and/or ionizing radiation and disintegrate into one or more smaller nuclei.
According to this question, a radium atom undergoes a beta decay. Since a beta particle has 0 as mass number and -1 as atomic number, this means that the mass number of the resulting product will be unchanged.
Therefore, the mass number of the product will be 225.
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explain how the line spectrum of hydrogen atom in Lyman series is formed
Answers
Line spectrum of hydrogen atom in Lyman series is formed 'absorbs energy and gets excited'
The electron in a hydrogen atom absorbs energy and gets excited and the electron jumps from a lower energy level to a higher energy level and when it comes back to its original state, it gives out energy which forms a hydrogen spectrum and the line in Lyman series is formed by electronic transition and all the wavelengths in the Lyman series are in the ultraviolet band and this are seen in ultraviolet emission lines of the hydrogen atom as an electron goes from n ≥ 2 to n = 1 where n is the principal quantum number and the lowest energy level of the electron.
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A sample of water weighing 523g is cooled by 23C. Calculate the q value for this process.
Answers
Answer:
The q value for this process is -241.69 kJ.
Explanation:
To calculate the q value, we need to use the equation:
q = m * c * ΔT
where:
q is the heat energy absorbed or released,
m is the mass of the substance,
c is the specific heat capacity of the substance,
ΔT is the change in temperature.
In this case, the mass of the water (m) is given as 0.523 kg, the change in temperature (ΔT) is 23°C, and the specific heat capacity of water (c) is approximately 4.18 kJ/kg°C.
Substituting the values into the equation:
q = 0.523 kg * 4.18 kJ/kg°C * 23°C
q = 5.46 kJ * 23°C
q = -125.58 kJ
The negative sign indicates that heat is being released from the water as it cools. Therefore, the q value for this process is -125.58 kJ or approximately -241.69 kJ (rounded to two decimal places).
All alkali metals react with water to produce hydrogen gas and the corresponding alkali metal hydroxide. A typical reaction is that between lithium and water: 2Li(s) + 2H2O(1) 2LiOH(aq) + H2(g) How many grams of Li are needed to produce 9.89 g of H₂ ?
Answers
Answer:
69.23g
Explanation:
Find out how many moles is in 9.89g of H2.
number of moles = mass(g) / molar mass
1 is the molar mass of hydrogen (to the nearest whole)
relative molecular mass of H2: 2*1 = 2
number of moles of H2 = 9.89/2 = 4.945
1 mol of H2 is produced from 2 mol of Li
so
4.945 mol of H2 produces 9.89 mol of Li
mass(g) = number of moles * molar mass
7 is the molar mass of Lithium (to the nearest whole)
mass = 9.89 * 7 = 69.23
69.23 grams of Li are needed to produce 9.89 of H2
The hydronium ion concentration of a dilute solution of vinegar is 1.45 x 10^-5 M. What is the pH of this solution? a. 5.7b. -4.8c. 4.8 d. -5.7 e. 7.0
Answers
First, we have to remember that the pH is a scale that allows us to determine if a solution is acid or basic.
The equation for calculating the pH is:
\(pH=\text{ -log \lparen\lbrack H}^+])\text{ }\)Being [H+], the concentration of hydronium ion.
Then, we have all the information to calculate the pH of the solution:
\(pH=\text{ -log\lparen1.45*10}^{-5})=\text{ 4.839 }\approx\text{ 4.8}\)Then, the answer is that the vinegar solution's pH is equal to c. 4.8
What volume do of 2.0 M HNO3 is needed to neutralize 40.0ml of 5.0 m NaOH
Answers
100 mL of 2.0 M HNO3 is needed to neutralize 40.0 mL of 5.0 M NaOH.
To determine the volume of 2.0 M HNO3 needed to neutralize 40.0 mL of 5.0 M NaOH, we can use the concept of stoichiometry and the balanced chemical equation for the neutralization reaction between HNO3 and NaOH.
The balanced chemical equation for the reaction is:
HNO3 + NaOH → NaNO3 + H2O
From the balanced equation, we can see that the stoichiometric ratio between HNO3 and NaOH is 1:1. This means that 1 mole of HNO3 reacts with 1 mole of NaOH.
First, let's calculate the number of moles of NaOH in 40.0 mL of 5.0 M NaOH:
moles of NaOH = volume (in L) × concentration (in M)
moles of NaOH = 0.040 L × 5.0 M = 0.2 moles
Since the stoichiometry is 1:1, we know that 0.2 moles of HNO3 are required to neutralize 0.2 moles of NaOH.
Now, let's calculate the volume of 2.0 M HNO3 needed to provide 0.2 moles of HNO3:
volume of HNO3 = moles of HNO3 / concentration (in M)
volume of HNO3 = 0.2 moles / 2.0 M = 0.1 L or 100 mL
Therefore, 100 mL of 2.0 M HNO3 is needed to neutralize 40.0 mL of 5.0M NaOH.
It's important to note that during the neutralization reaction, the reaction goes to completion. However, in practice, it is recommended to add the acid slowly and carefully while continuously monitoring the pH to ensure complete neutralization and avoid over-titrating.
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Describe the trend of the reactivity of the elements in group VII
Answers
The non-metal elements in Group 7 – known as the halogens – get less reactive as you go down the group
Answer & Explanation:
The reactivity of elements in Group VII, also known as Group 17, decreases with increasing atomic radius. This is because halogens have high electronegativities and a proclivity to gain electrons in noble gas configurations. Myths are traditional stories or beliefs that explain cultural or societal beliefs, customs, or natural phenomena. They can be passed down through generations and can be based on true or fictitious events. Mythology, on the other hand, is the collection of myths associated with a specific culture or religion. Mythology can be amplified through retelling, incorporation into religious practices; association with significant events or figures, and adaptation into other media forms such as literature, film, or art.
Which of the following is the best description of matter?
Answers
Answer:
description of matter:
Matter is everything around you. Atoms and compounds are all made of very small parts of matter. Those atoms go on to build the things you see and touch every day. Matter is defined as anything that has mass and takes up space (it has volume).
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X-rays are often used in medical settings to create images of the body's internal structures such as bones. This is made possible by the
fact that X-rays are able to pass through the body's softer tissues without being absorbed.
Radio waves are also able to pass through the body's softer tissues without being absorbed. Why are radio waves not used to generate
medical images?
OA. The electrons in most atoms are not in high enough energy states to absorb the photons of radio waves.
OB. Radio waves tend to bend too much when they encounter solid materials to be used for generating accurate images,
OC
The frequency of most radio waves is too low to allow them to pass through bones or other solid materials.
OD.
Radio waves carry so little energy that they tend to pass through most atoms without an interaction taking place.
Answers
Answer:D
Explanation:I did it on study island.
Radio waves are not used to generate medical images because as per the electromagnetic spectrum ,the radio waves carry little energy that they pass through most atoms without interaction.
What is an electromagnetic spectrum?The electromagnetic spectrum consists of radiation which consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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which of the following lewis diagrams best represents the bonding in the N2O molecule, considering formal charges? justify your answer.
Answers
The best diagram to represent N2O is the second diagram.
The Lewis diagram is used to represent the way two or more atoms bond. This is possible by using lines to represent bonds and dots to represent electrons.
In the case of the molecule N2O bonding occurs in the following way:
A triple bond is formed between the nitrogen atoms, which means, in the Lewis diagram the nitrogen atoms are connected with three lines.The oxygen atom connects to one of the nitrogen atoms.The nitrogen atom that is not connected to the oxygen will have 2 electrons represented by dots because the number of valence electrons is 5, but three were used in the triple bond.The oxygen atom will have 6 electrons represented by dots, which are equal to the number of valence electrons.Learn more about Lewis diagram in: https://brainly.com/question/9436176
Which of the following is NOT a property of all metals?
a. conduct electricity b. shiny
c. does not conduct heat d. malleable when solid
Answers
Answer: Shiny
Explanation:
explain why d-block and transition metal should not be used interchangeably ?
Answers
Answer:
The d-block and transition metal are not interchangeable terms because the d-block elements are a subset of the transition metal elements. The transition metals are defined as the elements that have partially filled d orbitals, which includes the d-block elements as well as other elements that have partially filled d orbitals in other blocks, such as lanthanides and actinides. Therefore, while all d-block elements are transition metals, not all transition metals are d-block elements.
The element that is in the same family as element C (gas) is likely to have which properties. 2 valence electrons, solid, metal 6 valence electrons, gas, nonmetal, 6 valence electrons, solid, nonmetal, 2 valence electrons, solid, nonmetal
Answers
Answer:
that element is likely to be a non metaland a gas
Indicate the subatomic particle described by each of the statements. A statement may describe more than one particle. possesses a negative charge has no charge has a mass slightly less than that of a neutron has a charge equal to but opposite in sign to that of an electron is not found in the nucleus Answer Bank has a positive charge proton neutron can be called a nucleon electron is the heaviest of the three subatomic particles has a relative mass of 1836 if the mass of an electron is 1 has a relative mass of 1839 if the mass of an electron is 1
Answers
a)possesses a negative charge - electron
b)has no charge - neutron
c)has a mass slightly less than that of a neutron - proton
d)has a charge equal to, but opposite in sign from, that of an electron - proton.
What has a negative charge?
Electrons have a negative charge. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge. Since opposite charges attract, protons and electrons attract each other.
What are the four properties of neutrons?
Neutrons are neutral particles – with no net electric charge.
Neutrons have a non-zero magnetic moment.
Free neutrons (outside a nucleus) are unstable and decay via beta decay.
Is a neutron's mass slightly less than a proton's?
The mass of a neutron is slightly greater than the mass of a proton, which is 1 atomic mass unit (AMU).
Is the charge of an electron opposite to the charge of a proton?
Electrons and protons have equal and opposite charges. The magnitude of this charge is 1.6×10−19 Coulomb.
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