The density of gold is 19.3 g/cm³. What is the mass of 11.3 cm³ of gold?
Answer:
218.09g
Explanation:
the formula for density is mass/volume
you have volume so rlly what you have is 19.3g/cm3=m/11.3cm3
so mass equals density x volume
and 19.3 x 11.3 = 218.09
Select the statements that correctly describe the characteristics of a polar aprotic solvent. Multiple select question. A polar aprotic solvent interacts strongly with anions as well as cations. A polar aprotic solvent cannot interact well with any type of ion. Acetone is a polar aprotic solvent because it cannot act as a hydrogen-bond donor. A polar aprotic solvent solvates cations by ion-dipole interactions.
A polar aprotic solvent is a polar solvent that does not have a hydrogen atom.
A polar protic solvent is a solvent that contains hydrogen. Water, ethanol and acetic acid are all examples of a polar protic solvent. A polar aprotic solvent is a polar solvent that does not contain hydrogen. Dimethyl sulphoxide, acetonitrile and dichloromethane are all examples of polar aprotic solvents.
The following are true about polar aprotic solvent.
Acetone is a polar aprotic solvent because it cannot act as a hydrogen-bond donor.A polar aprotic solvent solvates cations by ion-dipole interactions.Polar aprotic solvents solvates cations because the negative end of the dipole can interact well with the cation. Polar aprotic solvents interacts with ions by ion - dipole interaction.
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This image represents a(n)
a) atom of nitrogen
b)mixture of nitrogen atoms
c)compound containing nitrogen
d)molecule of diatomic nitrogen
Answer:
mixture of nitrogen B
Explanation:
ok
Answer:
Molecule of diatomic nitrogen
Explanation:
di means 2.
Since, 2 Nitrogen atoms are there, they share their electrons and form a molecule of diatomic nitrogen.
Identify the three major groups of rocks in the rock cycle. Be able to describe how one rock type could change into another. Explain how forces inside the earth are related to the rock cycle.
Answer:
igneous,sedimentary,and metamorphic
Explanation:
Rocks are collections of minerals of various sizes and types. The three main rock types are igneous, sedimentary, and metamorphic. Crystallization, erosion and sedimentation, and metamorphism transform one rock type into another or change sediments into rock.
Have your mother and father (or any adult man and woman) sing together on the same note, at the same pitch (not an octave apart). Write down any differences you can hear. Is one voice lower or higher sounding (even though they are singing the same pitch)? Are there other differences you can hear? Explain your results using the terms “overtones,” “frequency,” “pitch,” and “sound quality.”
Answer:
No one sounds the same in singing everyone has a different pitch, overtones, and sound quality. Now in some songs people harmonize together and that can sound the same in pitch but there are still different pitches and tones.
which molecule is a common output of glycolysis, pyruvate oxidation, and the citric acid cycle?
Explanation:
Acetyl CoA links glycolysis and pyruvate oxidation with the citric acid cycle. In the presence of oxygen, acetyl CoA delivers its acetyl group to a four-carbon molecule, oxaloacetate, to form citrate, a six-carbon molecule with three carboxyl groups.
Acetyl Co-A is a common output of glycolysis, pyruvate oxidation and citric acid cycle.
How does acetyl co-A links glycolysis and citric acid cycle?Acetyl Co-A links glycolysis and pyruvate oxidation with the citric acid cycle as in presence of oxygen it delivers its acetyl group to four carbon molecule to form citrate a six carbon molecule with three carboxyl groups .
In the citric acid cycle, 2 carbons of acetyl group which were of acetyl Co-A are released in form of carbon dioxide a major product of cellular respiration. For each acetyl Co-A which enters citric acid cycle 2 carbon dioxide molecules are released.
The transition reaction is the conversion of 3-carbon pyruvate to 2- carbon acetyl co-A and 2 molecules of carbon dioxide.
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which element on the periodic table has the highest electronegativity
Answer:
fluorine
Explanation:
Electronegativity varies in a predictable way across the periodic table. Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element, while francium is one of the least electronegative
Imagine having to use brainly Couldn't be me.
nubs
which method would be best for separating the components of a mixture
Answer:
A
Explanation:
Evaporation It would become a crystal
the bonding between sodium and chlorine, why is it that type of bounding? what it creates? what happens in water when you put sodium chloride in water?
I need it quickly and not copy-write.
Answer:
NaCl sodium chloride is an ionic salt. Also commonly known as table salt. When you put sodium chloride in water, the molecule dissolves in water because the covalent bonds of water (H2O) is stronger than the ionic bond of NaCl.
Explanation:
To be more specific, the two hydrogen (+) molecules are attracted to the chlorine due to its negative charge. The oxygen (2-) of the water is also attracted to the Na (+). Water eventually pulls Sodium Chloride apart (breaks ionic bond) and dissolves it.
wich group was the control group? The experimental group?
Answer:looks spicy
Explanation:what are you asking
Which of the following compounds contains an ionic bond? *will give brainliest plus 15 points*
A. CCl4
B. CO2
C. KB
D. NHS
Answer:
C
Explanation:
ionic bonds are bonds between metals and non-metals or metalloids ,so the only compound with a metal is KB
What element is represented by the following orbital diagram?
Answer:
the answer is magnesium
Explanation:
Name some of the important rocks found in Nepal
Answer:
shale
sandstone
limestone
Explanation:
These fossiliferous rocks are extensively developed in Nepal, particularly in Thak Khola (Mustang), Manang, and Dolpa. This zone is around 40 kilometers broad and is made mostly of fossiliferous sedimentary rocks.
nitrates, turbidity and acidity. Whichwater sample was likely runoff from a farm?
Answer:
What is the most likely source of nitrogen in runoff? Fossil fuel emissions.
6.02 x [tex]10^{2}[/tex]
A solution with a (buffer or pH) of 7.0 is considered neutral.
Answer:
Correct
Explanation:
It means that there are an equal amount of hydroxyl and hydrogen ions, hence it is a neutral solution.
1. What allowed fusion reactions to take place in the early universe?
Answer:
Nuclear fusion in stars converts hydrogen into helium in all stars
bl Write a word equation for
the combustion of sulfur.
Example, when sulfur is burned in the air (one of my favorite chemical reactions) it combines with oxygen in the air to form an oxide. We consider this reaction in the form of a chemical equation: S (sulfur) + O2 (oxygen) |> SO2 (sulfur dioxide)
NEED AN ANSWER FROM K12 MUST HAVE THE ANSWERS OR WILL GET REPORTED NO LINKS
How many laws of motion are there? (Newton's)
A. 3
B. 2
C. 1
D. 4
To which kinds of objects do Newton's laws of motion apply?
A. only objects rolling
B. only objects going down a hill
C. all objects
D. only objects flying
As a surfer is seen riding a wave toward the shoreline, what is the shoreline?
A. displacement reference
B. coordinate plane
C. Cartesian boundary
D. reference point
Which does not take the direction of the motion into account?
A. Distance
B. Displacement
C. velocity
Answer: A) 3 / C) all objects / D) reference point / C) velocity
Explanation: I did some research before answering, I hope this helps.
Summarize how C-14 and U-238 dating together can be used to determine fossil ages.
Answer:
Uranium 238 is only found in igneous or volcanic rocks. So no fossils can be dated directly using U 238.
Because of the huge differences in the half lives of Carbon 14 and Uranium238 they cannot be used together. Carbon 14 can only be used to date fossils of a very recent age. Uranium 238 can only be used to date volcanic rocks of a very old age.
Explanation:
Find the sum of the following measurements: reported correctly.
5.1 x 105 m + 5.22 x 105 m
Convert 0.000123 into scientific notation with the same number of sig figs. (Your answer should be in the format M x 10N U) (M is everything on the left. N is your exponent including a negative sign (if applicable) in front with no space between negative sign and exponent's number) (Examples: 2.5678 x 10-2 m, 2.5 x 105 m2) (you would type m2 for m2)
How many joules of heat would be required to heat 0.5 kg of aluminum by 2k?
Answer:
the answer is c. 900 joules of heat
Explanation:
Cell structure escape room
Can someone help me with this?
Refer to the attachment
Read the description of each element, then write its name and symbol
A) This non-gaseous and reactive metal belongs to group 16
B) This element has an atomic number of 42
C) This metal has an atomic mass of about 56
D) This Group 2 metal is in the sixth period
E) This metal element is liquid at room temperature
F) This is the lightest element of the second period
G) This element has a valence electron and six electronic layers
H) This element has a mass number of 184
I) This element has seven valence electrons and is in the fifth period
J) This element has four electronic layers and its outer layer is full
Answer:
Diatomic carbon (systematically named dicarbon and 1λ2,2λ2-ethene), is a green, gaseous inorganic chemical with the chemical formula C=C (also written [C2] or C2). It is kinetically unstable at ambient temperature and pressure, being removed through autopolymerisation. It occurs in carbon vapor, for example in electric arcs; in comets, stellar atmospheres, and the interstellar medium; and in blue hydrocarbon flames.[1] Diatomic carbon is the second simplest form of carbon after atomic carbon, and is an intermediate participator in the genesis of fullerenes.
Explanation:
3. Which is the most molecule that has the greatest number of atoms? a) H2SO4 b) 2002 c) CH3CH2COOH d) HNO3
Answer:
HNO3 is the answer HNO3 is the answer
Look closely at the remaining parts of the flower. Describe the structures you can see now that the petals are gone.
Anther
Filament
Pistil
Stalk
Answer:
Explanation:AntherFilamentPistilStalk
Which law in science uses addition?
Answer:
Scientific laws can be written as mathematical equations, so they are called quantitative. However, there aren't very many laws in biology. They are more common in physics and chemistry.
Explanation:
Use the molecular formulas for Ethanol (C2H5OH), Oxygen (O2), Carbon Dioxide (CO2), Water (H2O), and the yield sign () to write a balanced chemical equation for the reaction:
To balance the equation we have to find a combination of coefficients for the species that make the number of each element on both sides of the equation equal.
C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O
Checking to ensure the reactant and product sides of the equation are equal.
Reactants Products
C 2 2
H 6 6
O 7 7
Is soap solution a strong, weak or non electrolyte
Answer:
Nonelectrolytes do not dissociate into ions in solution; nonelectrolyte solutions do not, therefore, conduct electricity. ... Strong and Weak Electrolytes.
Explanation: