Answer: Mars and Saturn both have celestial body. Mars and Saturn both revolve around the sun in their own orbits. Mars is the second smallest in the solar system while Saturn is second largest in the solar system.
(Just to clarify and correct the other person who answered....they both do not have rings. Saturns does, but Mars does not.)
Explanation:
What is the percent m/m concentration of an aqueous solution of sodium nitrate in which there are 24.34 grams of solute in 138.87 grams of solvent
Answer:
14.9%m/m
Explanation:
The percent m/m concentration of a solution (%m/m) indicates the grams of solute there are in 100 g of solution. It can be calculated as follows:
[tex]%m/m= \frac{mass of solute (g)}{mass of solution(g)} x 100[/tex]%m/m= mass of solute(g)/mass of solution(g) x 100
As the solution is composed by solute + solvent, the mathematical expression can be transformed in:
[tex]%m/m= \frac{mass of solute (g)}{mass of solution(g)} x 100[/tex]%m/m= mass of solute(g)/(mass of solute + mass of solvent (g) )x 100
= 24.34 g[tex]%m/m= \frac{mass of solute (g)}{mass of solution(g)} x 100[/tex]/(24.34 g + 138.87 g) x 100
= 24.34 g/(163.21 g) x 100
= 14.9%
[tex]%m/m= \frac{mass of solute (g)}{mass of solution} x 100 = \frac{mass of solute (g)}{mass of solute (g) + mass of solvent (g)}[/tex]
Which of these choices is true about any map that shows the entire world?
Multiple Choice | 1.00pts
Land is always brown, and the ocean is always blue.
Lines of latitude and longitude are always perpendicular.
Some distortion exists somewhere in the map.
The map is always rectangular.
Answer:
Some distortion exists somewhere in the map.
Explanation:
Any map that shows the entire world will have some distortion somewhere in the map. This is because we are transforming a spherical body to a flat rectangular dimensional surface.
The earth is a 3-dimensional body and a map, is usually 2-dimensionalShapes are usually distorted in order to accommodate this transposition. Some continents will appear smaller or bigger than expected. The nature of the projection used will determine the inherent distortion.Which of these molecules is polar?
A. O₂
B. N2
C. BH3
D. NO
Explanation:
Then there is no net charge separation. a BH3 b CHCl3 c C2H2 d NH3. Optionally the ... Oxygen O2 c. ... BH3 2. Com Bh3 Polar Or Nonpolar In the case of non polar molecules dispersion forces or London forces are present between them.
The polar molecules is NO.
What is polar molecule?A polar molecule is one that has one end that is slightly positive and the other end that is slightly negative. Ionic or polar covalent bonds can form in polar molecule. A dipole is a molecule that has two poles. The dipole moment is the outcome of measuring the amount of polarity in a molecule.
NO molecule, In the periodic table, nitrogen is to the right of oxygen. Nitrogen has a lower electronegative potential than oxygen. All N-O bonds are polar, with the oxygen atom having a higher electron density. The uneven distribution of electrons in the NO molecule is quite minor. When a molecule is non-polar, the electrons are shared evenly, resulting in a non-polar bond, or the polar bonds are symmetric. So, oxygen, nitrogen and boron trihydride molecules are non-polar molecule.
Hence the correct option is D.
To know more about polar molecule, here,
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Which of the following would you get from playing too much tennis?
A. Muscular Dystrophy
B. Cerebral Palsy
C. Tendonitis
D. ALS
Answer:
a
Explanation:
is vinegar positive or negative charged
Answer:
Positive charged
Explanation:
At what temperature will 5.00 g of F2, exert a pressure of 119.96 kPa at a volume of 750.0 mL?
Answer:
-183.15 °C
Explanation:
Given data:
Mass of F₂ = 5.00 g
Pressure = 119.96 KPa (119.96/101 = 1.2 atm)
Volume = 750.0 mL ( 750.0/1000 = 0.75L)
Temperature = ?
Solution:
First of all we will calculate the number of moles.
Number of moles = mass/molar mass
Number of moles = 5.00 g/ 38g/mol
Number of moles = 0.13 mol
Now we will calculate the temperature:
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
1.2 atm × 0.75 L = 0.13 mol ×0.0821 atm.L/ mol.K × T
0.9 atm.L = 0.01 atm.L/ K × T
T = 0.9 atm.L /0.01 atm.L/ K
T = 90 K
Kelvin to degree celsius:
90K -273.15 = -183.15 °C
mixed nuts, halo-halo and buko sald
are exam
examples of what kina
of mixtured
Answer:
heterogeneous mixture
Explanation:
I'm not sure what halo halo or buko is but with mixed nuts you can see the mixture elements so that would be heterogeneous.
If you can't see the individual pieces in a mixture like ex: milk. that is a homogenous mixture.
Somebody please help me I’m completely lost
Answer:
λ [Wavelength] = 3.04357825 m [meters]
Explanation:
Given a frequency, to find the wavelength, divide the speed of light by the frequency. Wavelength = Speed Of Light In Seconds / Frequency .
Wavelength in meters is: λ = 299,792,458 m/s / f Hz .
Then substitute in the frequency to find the wavelength: λ = 299,792,458 m/s / f Hz → λ = 299,792,458 m/s / 9.85 × 10^7 Hz → λ = 2.99792458 × 10^8 m/s / 9.85 × 10^7 → λ = 2.99792458 × 10^8 m / 9.85 × 10^7 → λ = 29.9792458 / 9.85 m → λ = 3.04357825 m
if 22.0 aluminum chloride is added to 26.0 g of silver nitrate, how many g of that solid product is expected to form
Answer:
21.95 g of AgCl.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
AlCl3(aq) + 3AgNO3(aq) —> 3AgCl(s) + Al(NO3)3(aq)
Next, we shall determine the masses of AlCl3 and AgNO3 that reacted and the mass of AgCl produced from the balanced equation. This is illustrated below:
Molar mass of AlCl3 = 27 + (3×35.5) = 133.5 g/mol
Mass of AlCl3 from the balanced equation = 1 × 133.5 = 133.5 g
Molar mass of AgNO3 = 108 + 14 + (3×16) = 170 g/mol
Mass of AgNO3 from the balanced equation = 3 × 170 = 510 g
Molar mass of AgCl = 108 + 35.5 = 143.5 g/mol
Mass of AgCl from the balanced equation = 3 × 143.5 = 430.5 g
From the balanced equation above,
133.5 g of AlCl3 reacted with 510 g of AgNO3 to produce 430.5 g of AgCl.
Next, we shall determine the limiting reactant. This can be obtained as follow:
From the balanced equation above,
133.5 g of AlCl3 reacted with 510 g of AgNO3.
Therefore,
22 g of AlCl3 will react with =
(22 × 510)/133.5 = 84.04 g of AgNO3.
Thus, we can see that it will require a higher mass (i.e 84.04 g) of AgNO3 than what was given (i.e 26 g) to react completely with 22 g of AlCl3. Therefore, AgNO3 is the limiting reactant and AlCl3 is the excess reactant.
Finally, we shall determine the mass of the solid product (AgCl) produced from the reaction.
In this case the limiting reactant will be used because, it will produce the maximum yield of the reaction since all of it is used up in the reaction.
The limiting reactant is AgNO3 and the mass of AgCl produced can be obtained as follow:
From the balanced equation above,
510 g of AgNO3 reacted to produce 430.5 g of AgCl.
Therefore, 26 g of AgNO3 will react to produce = (26 × 430.5)/510 = 21.95 g of AgCl.
Thus, the mass of the solid product (AgCl) produced is 21.95 g
The most reactive groups in the Periodic Table are
A) Group 1 and 2 B) Group 1 and 17 C)Group 1 and 18 D)Group 17 and 18
Answer:
B) Group 1 and 17
Explanation:
alkali metals and the halogens are the most reactive because of valence electrons
What is the formula mass of (NH4)3 PO4? (Show work)
Answer:
Mass = 149g
Explanation:
N3 = 3x14u = 42
H12 = 12x1u = 12
P = 1x31u = 31
O4 = 4x16u = 64
42+12+31+64 = 149g
This curved shape is called the meniscus. Always read the volume at the bottom of the meniscus,
3. What is the volume of the water in the graduated cylinder?
PLS HELP ME ITS DO IN THIRTY MINUTES
Answer:
rip you
Explanation:
Write a balanced half-reaction for the reduction of solid manganese dioxide MnO2 to manganese ion Mn 2 in acidic aqueous solution. Be sure to add physical state symbols where appropriate.
Answer:
2 e⁻ + 4 H⁺(aq) + MnO₂(s) → Mn²⁺(aq) + 2 H₂O(l)
Explanation:
Let's write the half-reaction for the reduction of solid manganese dioxide MnO₂ to manganese ion Mn²⁺ in acidic aqueous solution.
MnO₂(s) → Mn²⁺(aq)
To balance the oxygen atoms, we will add 2 moles of water on the right side. To compensate for the hydrogen atoms added, we will add 4 hydrogen ions on the left side.
4 H⁺(aq) + MnO₂(s) → Mn²⁺(aq) + 2 H₂O(l)
Finally, we will balance the charges by adding 2 electrons on the left side.
2 e⁻ + 4 H⁺(aq) + MnO₂(s) → Mn²⁺(aq) + 2 H₂O(l)
Pillow lava forms:
underwater
on land
on mountain tops
Which technology is used to measure the mass of atoms and to determine the percent composition of compounds?
Answer:
Find the molar mass of all the elements in the compound in grams per mole.
Find the molecular mass of the entire compound.
Divide the component's molar mass by the entire molecular mass.
You will now have a number between 0 and 1. Multiply it by 100% to get percent composition.
Explanation:
Mass spectrometry is used to measure the mass of atoms and to determine the percent composition of compounds.
What is mass spectrometry ?There have been qualitative and numerical implications for mass spectroscopy. These include distinguishing unrecognized compounds, determining out a molecule's elemental isotopic makeup, and figuring out a compound's structure by analyzing at how it fragmented.
In order to determine the mass-to-charge ratio (m/z) of one or more molecules present in a sample, mass spectrometry is a proven to be a valuable instrument. The precise molecular weight of the sample's individual components may typically be estimated using these measures and also.
Thus, mass spectrometry is used to measure the mass of atoms and to determine the percent composition of compounds.
To learn more about mass spectrometry follow the link below;
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Joshua has learned that the human body is made up of many body systems that work together to function for life which of the following does not provide an example of two human body systems working together A heart pumps oxygen-rich blood from the lungs to the body B storing waste products for later illumination C  shivering in response to sensing cold D hormones are released into the bloodstream
Answer:
Explanation:B storing waste materials
What is the answer for this if you have the answer pls let me know 2Hg 9SCN)2 ⇀ 2HgS +CS2 + C3N4 this is for science
Answer:
1011010101010100101010101101010101010010101010110101010101001010101011010101010100101010101101010101010010101010110101010101001010101011010101010100101010101101010101010010101010110101010101001010101011010101010100101010101101010101010010101010110101010101001010101011010101010100101010101101010101010010101010110101010101001010101011010101010100101010101101010101010010101010110101010101001010101011010101010100101010101101010101010010101010110101010101001010101011010101010100101010101101010101010010101010110101010101001010101011010101010100101010101101010101010010101010110101010101001010101011010101010100101010, You're welcome
Explanation:
A chemist makes up a solution by dissolving 39.0 g of Mg(NO3)2 in enough water to produce a final solution volume of 257 mL. To calculate the molarity of the solution, what additional information is needed
Answer:
[tex]M=1.02M[/tex]
Explanation:
Hello.
In this case, since the molarity of a solution is computed as the moles of solute over volume of solution:
[tex]M=\frac{n_{solute}}{V}[/tex]
Since the volume of the solution is 257 mL or also 0.257 L, we compute the moles of solute, which is magnesium nitrate (molar mass = 148.3 g/mol), as shown below:
[tex]n_{solute}=39.0gMg(NO_3)_2*\frac{1molMg(NO_3)_2}{148.3 gMg(NO_3)_2}=0.263molMg(NO_3)_2[/tex]
Thus, the required molarity turns out:
[tex]M=\frac{0.263molMg(NO_3)_2 }{0.257L}\\ \\M=1.02M[/tex]
Best regards.
which substance is translucent
Answer:
Paper, some plastics, frosted glass, etc.
Explanation:
Of the three states of matter, molecules are moving the fastest and are the farthest apart in a what?
Answer:
Molecules are moving the fastest and are the farthest apart in the gaseous phase.
Explanation:
a binary compound of nitrogen and hydrogen has the following percentage composition: 82.27% nitrogen; 17.76% hydrogen. If the molar mass of the compound is determined by a separate experiment to be slightly more than 17g what are the empirical and molecular formulas of the compound
Answer:
Both empirical and molecular formulas are NH₃.
Explanation:
Hello.
In this case, since we know the percent compositions of both nitrogen and hydrogen, in order find out the molecular formula and the empirical formula of that compound, we can first assume we have 82.27 g of nitrogen and 17.76 g of hydrogen as a first approximation to compute the present moles:
[tex]n_N=82.27g/(14.01g/mol)=5.872mol\\\\n_H=17.76g/(1.01g/mol)=17.58mol[/tex]
Next, we compute the subscripts in the empirical formula first, by diving the moles of each element by the moles of the element with fewest moles:
[tex]N:\frac{5.872}{5.872}=1\\\\H:\frac{17.58}{5.872}=3[/tex]
It means that the empirical formula is NH₃ and its molar mass is about 17.04 g/mol which is about the same the reported molar mass slightly more than 17 g, it means that the molecular formula is also NH₃.
Best regards!
Discuss each of the following observations: (a) The [CoCl4]2– ion is a regular tetrahedron but [CuCl4]2– has a flattened tetrahedral structure. (b) The electronic absorption spectrum of [CoF6]3– contains two bands with maxima at 11,500 and 14,500 cm–1.
Answer:
See explanation
Explanation:
a) Look at the electronic configuration of both species;
Cu^2+- [Ar] 3d9 4s0
Co^2+- [Ar] 3d7 4s0
We can now see that a Jahn Teller effect occurs in [CuCl4]2– due to its d9 configuration. This Jahn-Teller distortion causes the symmetry of [CuCl4]2– to change from tetrahedral T
d to trigonal pyramidal C3v.
b) This is a consequence of Jahn-Teller effect in [CoF6]3– which makes the Co-F bonds lie along the z-axis and become elongated in comparison to the remaining four Co-F bonds
NiCl2 —> Ni + Cl2
What is the type of reaction? Also the reactants and products?
What's the structure of CI2O? Is it polar or non-polar? hellp
Answer:
its polar
Explanation:
Which of the folio rock formation processes in NOT matched correctly?
A) Melting & cooling = Ingenious rock formation
B) Heat & pressure = metamorphic rock formation
C) Magma cooling = metamorphic rock formation
D) sediments being deposited, compacted & cemented together = sedimentary rock formation
E) Weathering, erosion, deposition, compaction & cementation = sedimentary rock formation
Answer:
I got e but you might want to wait for someone else to answer it just incase...
Answer:
Magma cooling = metamorphic rock formation
Explanation:
Did you mean formation not folio?
The density of Germanium is 5.32 g/cm. You
measure out 37.72 g. What is its volume?
Correct units and significant figures must be
included for full credit.
please help
Answer:
7.09 cm³
Explanation:
From the question given above, the following data were obtained:
Density of Germanium = 5.32 g/cm³
Mass of Germanium = 37.72 g
Volume of Germanium =?
The density of a substance is simply defined as the mass of the substance per unit volume of the substance. Mathematically it is expressed as:
Density = mass / volume
Thus, with the above formula, we can obtain the volume of Germanium as shown below:
Density of Germanium = 5.32 g/cm³
Mass of Germanium = 37.72 g
Volume of Germanium =?
Density = mass /volume
5.32 = 37.72 / volume
Cross multiply
5.32 × Volume = 37.72
Divide both side by 5.32
Volume = 37.72 / 5.32
Volume of Germanium = 7.09 cm³
In which layer of the atmosphere do meteors burn up?
A: Thermosphere
B: Stratosphere
C: Mesosphere
D: Troposphere
Answer:
C Mesosphere
Explanation:
the meteors will travel through the exosphere and thermosphere without much trouble due to the lack of air in those layers but when they hit the middle layer which is the mesosphere there are enough gases to cause friction and create heat burn up in the mesosphere
(I did research on a helpful site! I hope this helps)
:)
A chemistry graduate student is given of a hydrocyanic acid solution. Hydrocyanic acid is a weak acid with . What mass of should the student dissolve in the solution to turn it into a buffer with pH
Here is the full question:
A chemistry graduate student was given 500 mL of a 1.60 M hydrocyanic acid (HCN) solution. Hydrocyanic acid is a weak acid with [tex]K_a = 4.9 \times 10^{-10}[/tex]. What mass of KCN should the student dissolve in the HCN solution to turn it into a buffer with pH = 9.16?
Answer:
36.85 g
Explanation:
From the given information above:
Recall that number of moles of HCN = mass of HCN / molar mass of HCN= mass of HCN / molar mass of HCN
Therefore;
the number of moles of HCN = [tex]\dfrac{500 \times 1.60}{1000}[/tex]
the number of moles of HCN = [tex]\dfrac{800}{1000}[/tex]
the number of moles of HCN = 0.8
The acid dissociation constant [tex]K_a[/tex] = [tex]4.9 \times 10^{-10}[/tex]
Thus the pKa = [tex]- log (4.9 \times 10^{-10})[/tex]
pKa = 9.31
However, the pH is given as:
[tex]pH = pKa + log \bigg ( \dfrac{KCN}{HCN} \bigg )[/tex]
[tex]9,16 =9.31 + log \bigg ( \dfrac{KCN}{0.8} \bigg )[/tex]
[tex]9,16 -9.31 =log \bigg ( \dfrac{KCN}{0.8} \bigg )[/tex]
[tex]-0.15 =log \bigg ( \dfrac{KCN}{0.8} \bigg )[/tex]
KCN = 0.566 mol
The standard molar mass of KCN = 65.11 g/mol
Thus, the mass of KCN = number of moles of KCN × molar mass of KCN
the mass of KCN = 0.566 × 65.11
the mass of KCN that the student needs to dissolve in HCN is = 36.85 g
what is the same about map view and cross section
Answer:
(a) Map view and (b) cross-section view of location results for lower and upper groups overlapping with faults. Green dashed lines, magenta dots and blue dots refer to preexisting faults, lower events and upper events, respectively. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
(a) Map view and (b) cross-section view of location results for lower and upper groups overlapping with faults. Green dashed lines, magenta dots and blue dots refer to preexisting faults, lower events and upper events, respectively. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
All periods on the periodic table contain the same number of elements.
a. True
b. False
Answer:
False
Explanation: