Answer:
A.) Warm Ocean Waters
Explanation:
Hurricanes usually originate within hotter climates but must have a direct or large body of water to form over. In this case, majority of the hurricanes reported originated over large bodies of water such as Oceans near the equator. This is so because with intense humidity and high pressured areas hurricanes began to collect vapor which begins to swirl in a spiral format. Many hurricanes in fact occur rather near the equator.
Fun Fact: Hurricanes usually occur among coastal lines located closer to the equator. Such as, within the US, hurricanes up north are considered to be quite rare given the usual cold environment in comparison to the southern states.
Calculate the amount of 0.1 M acid needed to neutralize 10,000 liters of pH 8.0 water. The acid is carbonic acid (H₂CO₃).
Answer:
50mL of the 0.1M acid are needed to neutralize the solution
Explanation:
To solve this question we have to calculate the moles of OH- present in the basic solution. Based on the reaction:
2OH- + H2CO3 → 2H2O + CO3²⁻
we can find the moles of carbonic acid (And its volume) required for the complete neutralization as follows:
Moles OH-:
pH = -log [H+]
10^-pH = [H+]
[H+] = 1x10⁻⁸M
As:
[OH-] = Kw / [H+]
[OH-] = 1x10⁻¹⁴ / 1x10⁻⁸
[OH⁻] = 1x10⁻⁶M
The moles in 10000L are:
10000L * (1x10⁻⁶moles OH- / L) = 0.01 moles OH-
Moles H₂CO₃ required:
0.01 moles OH- * (1mol H₂CO₃ / 2mol OH⁻) = 0.005 moles H₂CO₃
Volume:
0.005 moles H₂CO₃ * (1L / 0.1moles) = 0.05L =
50mL of the 0.1M acid are needed to neutralize the solutionCiencias: una perturbación que transfiere energía de un lugar a otro que es ?
Answer:
Una onda es una perturbación que se propaga en el espacio, transportando energía pero no materia.
Explanation:
What is the mass (in grams) of 4.5 x 10^23 units of NaCl?
could you also explain?
Answer:
43.7 g
Explanation:
unit mass of NaCl = (23 + 35.5) u = 58.5 u
58.5 is the mass of one unit formula of NaCl (since NaCl is not a molecular compound)
1 u = 1.661×10^-24 g
if 1 unit formula of NaCl has 58.5 u, then 4.5×10²³ units of NaCl will have:
58.5 u × (1.661×10^-24 g/1 u) × 4.5×10²³ = 43.7 g
B. Radiation
D. roasting
How do vibrations of particles behave when sounds travel through solids?
A occurs fast
C. occurs moderately
B. occurs very slowly
D. cannot be determined
Hurry please need fast
In the following chemical phrase how many moles of O are there? 6
C2H602* 2
6
12
3
The type(s) of food groups that provide the body with muscle repair and
healing is
Answer:
Protein
Explanation:
Which builds muscles
What is the charge of Mn in MnO4- ?
Answer: +7
Explanation: Sum of all the oxidation numbers in a polyatomic ion is equal to the charge on the ion. Thus, the total charge on the polyatomic anion is −1. Thus, the oxidation number of Mn in MnO−4 is +7.
At a certain temperature, O2 molecules move at an average velocity of 480 m/s. At that same temperature what would be the velocity of He atoms?
Answer:
[tex]r_{He}=169.7m/s[/tex]
Explanation:
Hello there!
In this case, since this problem can be understood via the Graham's law, which states that states that the rate of diffusion or of effusion of a gas is inversely proportional to the square root of its molecular weight, which can be extrapolated to the rate, we have:
[tex]\frac{r_{O_2}}{r_{He}} =\sqrt{\frac{M_{He}}{M_{O_2}} }[/tex]
Thus, since the molar mass of helium is 4.0 g/mol and that of oxygen is 16.0 g/mol, we solve for the average velocity of helium as shown below:
[tex]r_{He}=r_{O_2}\sqrt{\frac{M_{He}}{M_{O_2}} }\\\\r_{He}=480m/s\sqrt{\frac{4.0g/mol}{32.0g/mol} }\\\\r_{He}=169.7m/s[/tex]
Regards!
If we were to add a piece of solid Cu to an aqueous solution (in water) of silver nitrate, the Silver would be replaced in a single replacement reaction forming aqueous copper (II) nitrate and solid silver. How much silver, in grams, is produced if 15.00 grams of Cu is added to the solution of silver nitrate
Answer:
50.9 g of Ag
Explanation:
Reaction is:
Cu (s) + 2AgNO₃(aq) → 2Ag (s) + Cu(NO₃)₂ (aq)
1 mol of Cu react to 2 moles of silver nitrate in order to produce 2 moles of solid silver and 1 mol of copper (II) nitrate.
We assume, the silver nitrate in excess.
We determine moles of copper → 15 g . 1mol / 63.55 g = 0.236 moles
Ratio is 1:2. 1 mol of copper produce 2 moles of silver
0.236 moles of Cu will produce (0.236 . 2) / 1 = 0.472 moles of Ag
We deterine mass of silver:
0.472 mol . 107.87 g /mol = 50.9 g
Look at the diagram below. According to the diagram, what substance(s) are the
reactant(s)? What substance(s) are the product(s)? Explain your reasoning.
NH3(aq) + HCI (aa)
Ammonia Hydrochloric acid
NHCI (aa)
Ammonium chloride
You will be graded on the following rubric:
luje
Answer:
NH3(aq) and HCl(aq) are the reactants, while NH4Cl(aq) is the product.
Explanation:
The hydrogen atom from the HCl molecule joins the other three in NH3 creating a four hydrogen molecule, NH4Cl.
please help meee with both questions:))
A sample of nitrogen gas in a 750.0 mL sealed flask exerts a pressure of 206.58 kPa. Calculate the temperature of the gas if the flask contains 3.00 grams of gas.
Answer:
T= -99 °C.
Explanation:
Hello there!
In this case, according to the given description of the problem, it is possible for us to analyze this problem via the ideal gas equation:
[tex]PV=nRT[/tex]
However, we first calculate the moles in 3.00 grams of nitrogen gas (28.01 g/mol):
[tex]n=3.00g*\frac{1mol}{28.01g}=0.107mol[/tex]
Next, we solve for the temperature as shown below:
[tex]T=\frac{PV}{Rn}[/tex]
Next, we convert the given pressure and volume to atm and L to obtain:
[tex]T=\frac{(206.58atm/101.325)*750.0L/1000}{0.08206\frac{atm*L}{mol*K}*0.107mol}\\\\T=174.15K-273.15\\\\T=-99\°C[/tex]
Regards!
What volume, in milliliters, of calcium chloride 15.0 M stock solution would you use to
make 500 mL of 0.300M of calcium chloride solution?
20
5
15
10
Answer: The volume of stock solution of calcium chloride required is 10 mL.
Explanation:
A solution consists of solute and solvent. A solute is defined as the component that is present in a smaller proportion while the solvent is defined as the component that is present in a larger proportion.
To calculate the amount of solute needed, the formula used is:
[tex]C_1V_1=C_2V_2[/tex] ....(1)
where,
[tex]C_1\text{ and }V_1[/tex] are the concentration and volume of stock solution of calcium chloride
[tex]C_2\text{ and }V_2[/tex] are the concentration and volume of diluted solution of calcium chloride
Given values:
[tex]C_1=15.0M\\C_2=0.300M\\V_2=500mL[/tex]
Plugging values in equation 1:
[tex]15.0\times V_2=0.300\times 500\\\\V_2=10mL[/tex]
Hence, the volume of stock solution of calcium chloride required is 10 mL.
Use the information provided in the table to
determine the K, for methylammonium ion, the
conjugate acid of methylamine.
X6.8 x 10-19
4.4 x 1010
2.8 x 109
2.3 x 10-11
Answer: D
Explanation:
2.3x10-11
Answer:
D. 2.3 x 10^-11
Explanation:
Look at the image below
Which is the right answer
Answer:
NH3
Explanation:
there is one nitrogen and 3 hydrogen
(b)
Calculate the amount of iron that can be extracted from 2000 tonnes of haernatíte.
(Relative atomic masses: O = 16; Fe = 56)
Answer:
Explanation:
i have already given the answer earlier. you could click this link:
https://brainly.com/question/23568294
Water is boiling in a clear pot, as shown in the picture.
How do the water molecules closest to the burner compare to the water molecules closest to the surface of the liquid?
Answer:
How do the water molecules closest to the burner compare to the water molecules closest to the surface of the liquid? ... They are closer together and moving slower than those at the surface. They are more spread out and moving faster than those at the surface. The diagram shows the sun's interior.
Explanation:
Answer:
it's c if u don't want to read all that
Explanation:
3.) If you have 784 g of Sulfuric Acid (H2SO4), how many moles of Sulfuric
Acid is that? *
Answer:
98.07848
Explanation:
I assume you are converting between grams H2SO4 and mole. You can view more details on each measurement unit: molecular weight of H2SO4 or mol This compound is also known as Sulfuric Acid. The SI base unit for amount of substance is the mole.
Answer:
8moles
Explanation:
n=m/GFM
n=784/98.02
n=7.998
n=8moles
Which of the following is NOT a type of mucle tissue?
Cardiac
Smooth
Striped
Skeletal
Answer:
Striped should be the answer
Calculate the mass percent for a solution of 6.5 g KOH in 250 g water
Answer:
2.53%
Explanation:
mass percent = (mass of solute/mass of solution)×100%
mass percent = [6.5 g/(6.5 + 250) g]×100% = 2.53%
What must happen to uranium before it can be used as a fuel source?
A. No changes are necessary.
B. Stable U-235 must be enriched with 3% radioactive U-238.
C. Stable U-238 must be enriched with 3% radioactive U-235.
D. Unstable U-235 must be enriched with 5% U-238 to stabilize it.
Answer:
D
Explanation:
Before it can be used in a reactor for electricity generation, however, it must undergo a series of processes to produce a useable fuel. For most of the world's reactors, the next step in making the fuel is to convert the uranium oxide into a gas, uranium hexafluoride (UF6), which enables it to be enriched.
Unstable U-235 must be enriched with 5% U-238 to stabilize it. Hence, option D is correct.
What is radioactive?Radioactivity is the phenomenon of the spontaneous disintegration of unstable atomic nuclei into atomic nuclei to form more energetically stable atomic nuclei.
Before uranium can be used in a reactor for electricity generation, however, it must undergo a series of processes to produce a useable fuel.
For most of the world's reactors, the next step in making the fuel is to convert the uranium oxide into a gas, uranium hexafluoride (UF6), which enables it to be enriched.
Hence, option D is correct.
Learn more about radioactive here:
https://brainly.com/question/1770619
#SPJ2
What happens when a current is applied to two electrodes immersed in pure water?
A. No electrolysis occurs, and current does not flow.
B. Oxygen, but not hydrogen, is released as a gas.
C. Electrolysis occurs, releasing oxygen and hydrogen gas.
Answer:
b
Explanation:
Gucci ghhvhjhsgjjn hvh
Answer:
B
Explanation:
What causes severe weather to occur?
Answer:
i hope this helps
...............................
Covalent bonding occurs when... a electrons are shared between atoms b cations attract to anions c protons fuse in the nucleus d electrons are transferred between atoms
Answer: Covalent bonding occurs when electrons are shared between atoms. The correct option is A.
Explanation:
When atoms form a bond by sharing one or more pairs of electrons the bond is referred to as a COVALENT BOND. This is so because CV there is a natural drive for atoms to attain the electronic configuration of Group 0 which has a completely filled outermost shell of eight electrons. The covalent bond usually occurs among non- metals. Example of covalent bonding is seen in the formation of chlorine and carbondioxide molecules. Chloride atom which contains seven electrons in its outermost shell shares an electron with another chloride atom to attain a filled outermost shell leading to the formation of a chlorine molecule.
The characteristics of a covalent compound includes:
--> they contain only molecules. There are no ions, hence they do not conduct electricity.
--> they dissolve in organic solvents. They are insoluble in water.
--> they have low melting and boiling points.
____Al+____O2 → ____Al2O3
Which of the following sets of coefficients would correctly balance the equation and why?
A. 2, 2, 2; because you must use the same coefficient for each substance.
B. 2, 3, 2; because you must have the same number of atoms on each side of the equation.
C. 4, 3, 2; because you must have the same number of compounds on each side of the equation.
D. 4, 3, 2; because you may have the same number of atoms on each side of the equation
Answer:
D
Explanation:
You balance an equation so that all the elements have the same number of atoms on each side of the equation.
If 5.60 mol of a substance releases 14.9 kJ when it decomposes, what is ΔH for the process in terms of kJ/mol of reactant?
Answer:
The correct approach is "-2.67 kJ/mole". A further solution is described below.
Explanation:
The given values are:
No. of moles,
= 5.60 mol
Substance releases,
ΔH = 14.9 kJ
Now,
The ΔH in terms of kJ/mol will be:
= [tex]\frac{\Delta H}{5.60}[/tex]
On putting the given values of ΔH, we get
= [tex]\frac{-14.9}{5.60}[/tex]
= [tex]-2.67 \ kJ/mole[/tex]
how many miles of Fe are in 11.8 g of Fe
Answer:
32
Explanation:
How do alpha particles compare to gamma rays?
Answer:
Unlike alpha and beta particles, which have both energy and mass, gamma rays are pure energy. Gamma rays are similar to visible light, but have much higher energy. Gamma rays are often emitted along with alpha or beta particles during radioactive decay.
-Radiation basics.
Explanation:
Answer:
Unlike alpha and beta particles, which have both energy and mass, gamma rays are pure energy. Gamma rays are similar to visable light, but have much higher energy. Gamma rays are often emitted along with alpha or beta particles during radioactive decay.
Explanation:
Experiment: Select the DATA tab, and check that every species is selected. Click Advance year 10 times. Which fish populations increased, and which fish populations decreased?
arts Per Thousand ... Click advance year 10 times. ... Which organism was most hurt by increased storms, and why do you think this is so? ... On the Coral Reef tab I see less fish and on the Data tab I see Staghorn Coral has majorly decreased. ... B. How does this change the populations of the two species that eat algae, ...
Answer:
increase: yellow tail snapper
decrease: grouper, parrotfish, angelfish
Explanation:
balancing equation N2 + H2 to NH3
Answer:
N2 + 3H2 → 2NH3
Explanation: