Joanne wants to study the chemical properties of a substance. Which of the following is an example of a chemical property?
Group of answer choices
Observe if it reacts with acids
Observe if it is soluble in water
Finding its density
Boiling the water until it turns into a gas to determine its boiling point
Answers
Answer:
observe if it reacts with acids
Explanation:
Because whether it reacts is determined by its chemical properties
Related Questions
Explain the meaning of the terms "saturated," "unsaturated," and "supersaturated"
Answers
If you mastered this assignment, you will do exactly as it says to do.
What’s the Count?
NaC2HO4
Elements found in Formula:
Number of atoms in Element:
H2F5BLi
Elements found in Formula:
Number of atoms in Element:
2He2PSO4
Elements found in Formula:
Number of atoms in Element:
3He2O4PH
Elements found in Formula:
Number of atoms in Element:
Answers
The elements are the simplest chemical forms and they cannot be broken down through chemical reactions. There are many elements in the given formulas.
What are elements?
The elements are defined as those substances whose atoms all have the same number of protons. The elements are considered as the building blocks of matter. Each element has an atomic number and a symbol.
Each atom is regarded as an element. The elements create bonds to form molecules. The isotopes are the elements with the same atomic number but different mass numbers.
NaC₂HO₄ - 'N' , 'C', 'H','O'
H₂F₅BLi - 'H','F','B','Li'
He₂PSO₄ - 'He', 'P','S','O'
He₂O₄PH - 'He', 'O','P','H'
Which of the following is the only genotype not able to taste PTC.
a. IT
b. Tt
c. tt
Answers
Genotype have the non-taster phenotype
Chemistry
What is a chemical reaction
Answers
Answer:
A process that involves rearrangement
Explanation:
A chemical reaction is the process that involves rearrangement of the molecular or ironic structure of a substance, as a distinct from a change in physical form or a nuclear reaction.
Answer:
Explanation:
Chemistry
The chemical reaction H2(g) + ½ O2(g) → H2O(l) describes the formation of water from its elements.
The reaction between iron and sulfur to form iron(II) sulfide is another chemical reaction, represented by the chemical equation:
8 Fe + S8 → 8 FeS
17 was found from determination in a mass spectrometer that an element X has three Isotopes whose mass are & 19.19,20.99 and 21.99 respectively The abundance of these I sotopes are 90.92% 0.25% $8.83% respectively Calculate the relative atomic mass.
Answers
The relative atomic mass of the given element is 40.372 amu.
What is relative atomic mass?The relative atomic mass of an element is considered as the sum of the isotopes masses each multiplied by the percentage which is found in nature.
The formula which is used to calculate the relative atomic mass is
Relative atomic mass = sum of all atomic masses of isotopes × fractional abundance
Given,
Mass of isotopes 1 = 19.19 amu
Mass of isotopes 2 = 20.99 amu
Mass of isotopes 3 = 21.99 amu
Fractional abundance of isotope 1 = 0.9092
Fractional abundance of isotope 2 = 0.0025
Fractional abundance of isotope 3 = 0.0883
By substituting all the values, we get
[( 19.19 × 0.9092) + (20.99 × 0.0025) + (21.99 × 0.883)]
= 17.447 + 0.052 + 22.873
= 40.372 amu.
Thus, we concluded that the relative atomic mass of the given element is 40.372 amu.
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Heat is added to ice at 0 °C. Explain why the temperature of the ice does not change. What does change?
Answers
Heat is added to ice at 0 °C. Explain why the temperature of the ice does not change. What does change?When heat is added to ice at 0°C, the temperature of the ice does not change. This happens because all the heat energy is used up in overcoming the intermolecular forces of attraction (hydrogen bonds) that exist between the water molecules in ice.
As a result, the ice undergoes a phase change, from a solid to a liquid. This process is called melting. During melting, the temperature of the ice remains constant at 0°C because all the heat energy is used up in overcoming the intermolecular forces of attraction.The energy required to melt ice is known as the heat of fusion. The heat of fusion is the amount of heat energy required to change 1 kilogram of a solid into a liquid at its melting point. For water, the heat of fusion is 334 kJ/kg. This means that 334 kJ of heat energy is required to melt 1 kg of ice at 0°C. Therefore, during the melting of ice, the temperature of the ice does not change, but the internal energy of the ice does change, and this is manifested in the change of phase from a solid to a liquid.In summary, when heat is added to ice at 0°C, the temperature of the ice does not change, and all the heat energy is used up in overcoming the intermolecular forces of attraction between the water molecules in ice. This results in the melting of ice without any change in temperature.For such more question on molecules
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based on their positions in the periodic table, predict which has the smallest atomic radius: mg, sr, si, cl, i.
Answers
Among the elements listed, Chlorine (Cl) has the smallest atomic radius. Chlorine is placed far right in the period and has the smallest atomic radius due to its high atomic number and resulting strong attraction of electrons to the nucleus.
Atomic radius refers to the size of an atom and is usually defined as the distance between the nucleus and the outermost shell of electrons. The size of an atom is determined by the number of electron shells and the energy level of the electrons.
As you move from left to right across a period (row) in the periodic table, the atomic number (number of protons) increases, which means there are more protons in the nucleus. The increased positive charge in the nucleus attracts the electrons more strongly, resulting in a smaller size.
Therefore, among the elements listed (Mg, Sr, Si, Cl, I), Cl, which is on the far right of the period, has the smallest atomic radius due to its high atomic number and resulting strong attraction of electrons to the nucleus.
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Which of the following is NOT a
physical property?
A melting point
B state of matter
C density
D flammability
Answers
Explanation:
All of the following can be considered physical properties EXCEPT: c
A. color.
B. boiling point.
C. flammability.
D. taste.
E. density.
Glauber’s salt, Na2 SO4∙10H2 O(s), was used in the 17 th century as a laxative. Glauber’s salt losses waters of hydration according to the following equilibrium: Na2 SO4∙10H2 O(s) Na2 SO4 (s) + 10 H2 O(g) K = 4.08×10–25 at 25oC What is the partial pressure of water at 25oC in a closed container holding a sample of Glauber’s salt?
I have issue solving this because I don't know what to do for equilibrium constant equation when there is dot for the chemical equation.
Answers
\(3.64 X 10^{-3}\) is the partial pressure of water at 25 degrees Celcius in a closed container holding a sample of Glauber’s salt.
What is Glauber's salt?A colourless crystalline sulfate of sodium \(Na_2SO_410H_2O\) is used especially in dyeing, as a cathartic, and in solar energy systems.
Given equation is:
\(Na_2SO_410H_2O\) ⇄\(Na_2SO_4 + 10H_2O\)
K = \(4.08 X 10^{-25}\)at 25 degree celcius.
This equation belongs to a heterogeneous equilibrium.
Reactants and products are not in the same phase.
For heterogeneous equilibrium partial pressure of solids and liquids are
equal to zero and not included in the expression.
Therefore \(K_p\) =\(P_{H_2O}\)
\(4.08 X 10^{-25}\) =\({P_{H_2O}}^{10}\)→ due to coefficient
\(P_{H_2O} =3.64 X 10^{-3}\)
Hence, \(3.64 X 10^{-3}\) is the partial pressure of water at 25 degrees Celcius in a closed container holding a sample of Glauber’s salt.
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If I contain 2 moles of gas in a container with a volume of 30 liters and at a temperature of 337 K, what is the pressure inside the container?
Answers
Answer:
1.84
Explanation: just input the value into the formula pv=nrt
p*30=2*0.08206*337 then divide both sides by 30 and get 1.84
7.5 L of a gas at 2 ATM and a temperature of 75°C is changed and volume to 3.4 L and a pressure of .5 ATM what is the new temperature
Answers
Answer:
Explanation:
Combined Gas Law
T2= T1P2V2/ (P1V1) = 348.15 X .5 X 3.4/(2 X 7.5) =39.46 K or -233.69C
A chemist makes up a solution by dissolving 42.0 g of Mg(NO3)2 in enough water to produce a final solution volume of 213 mL. To calculate the molarity of the solution, what additional information is needed
Answers
Answer:
the molar mass of Mg(NO3)2
the mass of the water added the density of the Mg(NO3)2
the volume of water used
Calculate the number of moles of Mg(NO3)2 used to make up this solution. 42.0 g of Mg(NO3)2 is equivalent to___ mol Mg(NO3)2.
Now calculate the molarity of the solution, giving your answer to the correct number of significant digits.
Molarity of Mg(NO3)2 = ___M
When 106 g of water at a temperature of 21.4 °C is mixed with 64.3 g of water at an unknown temperature, the final temperature of the resulting mixture is 46.8 °C. What was the initial temperature of the second sample of water? (The specific heat capacity of liquid water is 4.184 J/g ⋅ K.)
Answers
Answer:
THE INITIAL TEMPERATURE OF THE SECOND SAMPLE IS 4.93 C OR 277.93 K
Explanation:
Mass of first sample of water = 106 g
Initial temp of first sample = 21.4 °C = 21.4 + 273 K = 294.4 K
Mass of second sample = 64.3 g
Final temp of theresulting mixture = 46.8 °C = 46.8 + 273 K = 319.8 K
Specific heat capacity of water = 4.184 J/g K
It is worthy to note that;
Heat gained by the first sample = Heat lost by the second sample
Since heat = mass * specific heat capacity * change in temperature, we have
Mass * specific heat * change in temp of the first sample = Mass * specific heat * change in temp. of the second sample
MC (T2 - T1) = MC (T2-T1)
106 * 4.184 * ( 319.8 - 294.4) = 64.3 * 4.184 * ( 319.8 - T1)
106 * 4.184 * 25.4 = 269.0312 ( 319.8 - T1)
11 265.0016 = 269.0312 (319.8 - T1)
Since the change in temperature = 319.8 -T1
Change in temperature =11265.0016 / 269.0312
Change in temperature = 41.87
Change in temperature = 319.8 -T1
41.87 = 319.8 - T1
T1 = 319.8 - 41.87
T1 = 277.93 K
T1 = 4.93 °C
So therefore, the initial temperature of the sacond sample is 4.73 °C or 277.93 K
Which of the following is not part of the nucleus?
A. Ribosome
B. Chromosome
C. Nucleus
D. Gene
Answers
I believe the answer is Ribosome
How many moles of KBr are dissolved in 60.2 mL of a 3.50 M solution?
Answers
There are 0.2107 moles of KBr are dissolved in 60.2 mL of a 3.50 M solution.
The molarity of a substance is defined as the number of moles of solute present in 1 litre of a solution.
According to the given data, the molarity of the solution tells us that there are 3.50 moles of KBr in 1000mL of solution. But we only have 60.2mL of solution, so with a mathematical rule of three we can calculate the amount of moles in 60.2mL:
1000 ml - 3.50 moles
60.2 ml -x = 60.2 ml× 3.50 moles/1000 ml
x= 60.2 ml -0.2107 moles
So, there are 0.2107 moles of KBr.
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Will the composition of water molecules vary depending on their source?
Answers
Answer:
It does not matter where the sample of water came from or how it was prepared. Its composition, like that of every other compound, is fixed.
Table C: Known Specific Heat Values for Common Materials
Material
Specific Heat
(J/g C)
4.18
Water
Concrete
Wood
Aluminum
Glass
Sand
Steel
Iron
Copper
Lead
Gold
0.88
1.80
0.90
0.84
0.83
0.49
0.44
0.38
0.16
0.13
% Error
(deviation from known)
Answers
Water is the best insulator because it has the greatest specific heat capacity and all other substances have low specific heat than the water.
What do you mean by the specific heat capacity?The term specific heat capacity is defined as the amount of heat in joules required to increase the temperature of one gram of a substance by one degree Celsius.
An insulator is a substance which conducts heat to a very miserable extent.
From the definition of specific heat capacity and insulator, we conclude that the higher the value of specific heat capacity, the harder it would be to heat up the material, that is, the more heat would be needed.
All the given substances, only water has the greatest specific heat capacity, therefore, it's the best insulator.
Gold is the best conductor, as it has the lowest specific heat capacity.
Thus, the best insulator is water.
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Your question is incomplete, most probably your question was
Table C: Known Specific Heat Values for Common
Materials
Material Specific Heat (J/g*C)
Water 4.18
Concrete 0.88
Wood 1.80
Aluminum 0.90
Glass 0.84
Sand 0.83
Steel 0.49
Iron 0.44
Copper 0.38
Lead 0.16
Gold 0.13
What is the best insulator and why?
which is the graph of the function g(x) = f(-x)
Answers
To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.
What is a graph of the function g(x) = f(-x)?To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.
If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).
However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.
In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.
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Which of Earth’s spheres contains rocks and sediments?
Answers
Answer:
Geosphere
Explanation:
Geosphere sometimes called as lithosphere starts from the surface of the earth and lies till crust. This part of the earth contains rocks and minerals.
This portion of the earth includes sediments,mountains and rock. The natural resources that is available to the human brings lies in geosphere.
0/1 point
Click on the chemical compound that is a product in
this balanced chemical equation.
N+3H, → ẢNH,
Answers
NH3 is the chemical compound produced as a product in the given balanced chemical equation.
What is NH3 defined in chemistry?With the formula NH3, ammonia is a nitrogen and hydrogen inorganic chemical. A Lewis base is urea. Ammonia is a colourless, extremely unpleasant gas that has a strong, suffocating stink when it is present at room temperature. It is hygroscopic and known as anhydrous ammonia in its pure state (readily absorbs moisture). Ammonia is corrosive and has alkaline qualities.
Do NH3 and H2O have such a dipole moment?Water molecules' shared dipoles and development of hydrogen bonds with one another account for this. As a consequence, the molecules of water and ammonia are both made up of dipoles that exert significant electrostatic forces on one another.
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I WILL GIVE 35 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS PLEASE
Answers
The solution has a molarity of 0.0924 M.
What is molarity, for instance?The number of moles of solute per litre of solution is known as molarity.. For instance, water is both the solution and the solute when table salt is dissolved in it. Each mole of sodium chloride weighs 58.44 grammes. 58.44 grammes of sodium chloride are dissolved in one litre of water to produce one molar solution, or 1M.
Moles of solute per litre of solution is known as molarity (M).
Given: moles of NH3 = 0.355, volume of solution = 3.84 L
Molarity = 0.355 moles / 3.84 L = 0.0924 M
Therefore, the molarity of the solution is 0.0924 M.
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An athlete can run 4 m/s. How far can she run in 3 minutes?
Answers
Answer:
720
Explanation:
4 m/s
60 seconds
= 180 seconds
3 minutes
4 m/s
= 720 m/s
180 seconds
what is the daughter nucleus (nuclide) produces when 64^Cu undergoes beta decay by emitting an electron? replace ? ? ?
Answers
Answer:
Explanation: that decays by emitting an electron particle the resulting nuclide is zinc-64. and yeah
BaO2 is a peroxide. Why?
Answers
Answer:
jajjsjsjddjdjdjdjdjjdjeieiririitofodoslwnridooskemridisoskswkwjj jwjwiwiwiwkiwiw
theoretically your best fit line should go through the origin (0,0). i.e. if the concentration of the material is 0 mol/l then its absorbance should also be zero. however, this may not be the case. list one reason that your best fit line may have an intercept not equal to zero and explain what you could do to correct for this error
Answers
Since there is no light absorption, the trendline must cross at (0, 0). The substance should have zero absorbance if its concentration is 0 mol/l.
Concentration is the ratio of a constituent's abundance to the mixture's overall volume. The concentration can refer to any form of chemical mixture, but is most usually used to describe the solutes and solvents in solutions. There are several different types of mathematical descriptions: mass concentration, molar concentration, number concentration, and volume concentration[1]. In common language, concentration is described qualitatively by the use of adjectives like "dilute" for solutions with a relatively low concentration and "concentrated" for solutions with a relatively high concentration. The molar (amount) concentration has variations, such as normal concentration and osmotic concentration. More solute (such as alcohol) or less solvent must be added to a solution to concentrate it (for example, water).
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What is the name given to the function described by the equation y = 3X?
O exponential
O inverse
O linear
O parabolic
Answers
Answer:
linear
Explanation:
passes the vertical line test when graphed
6. According to the graph above, which paper towel brand adsorbed the 5 points
most liquid?
Bounty
Brawny
Viva
Answers
Zeros between nonzero digits are significant
Answers
Answer:
Explanation:
If a zero is found between significant digits, it is significant
For the following reaction at equilibrium (400 °C), describe the effect on the equilibrium amount of Cl2(g) if additional O2(g) is added to the mixture at constant volume?
Answers
The addition of \(O_2(g)\) will shift the equilibrium towards the right side of the reaction and will consume \(Cl_2(g)\).
For the given reaction at equilibrium (400 °C), the effect on the equilibrium amount of \(Cl_2(g)\) if additional \(O_2(g)\)) is added to the mixture at constant volume can be determined by the Le Chatelier's principle.Le Chatelier's principle states that if a system in equilibrium is subjected to a stress, the system adjusts itself in such a way that it counteracts the stress and a new equilibrium is established.The given reaction is:\(Cl_2(g)\) + \(O_2(g)\) ⇌ 2ClO(g)When additional \(O_2\) is added to the mixture at constant volume, the concentration of O2(g) increases. According to Le Chatelier's principle, the system will adjust itself to counteract this increase in concentration by decreasing the concentration of \(O_2(g)\). This can be achieved by consuming \(O_2(g)\) to produce more ClO(g).The reaction shifts to the right to counteract the increase in concentration of \(O_2(g)\). As a result, the equilibrium amount of \(Cl_2(g)\) decreases, and the equilibrium amount of ClO(g) increases. Therefore, the addition of \(O_2(g)\) will shift the equilibrium towards the right side of the reaction and will consume \(Cl_2(g)\).Hence, the effect of adding \(O_2\) to the mixture will decrease the amount of \(Cl_2(g)\) at equilibrium while increasing the amount of ClO(g).Summary: If additional \(O_2\) is added to the mixture at constant volume, the concentration of \(O_2(g)\) increases. According to Le Chatelier's principle, the system will adjust itself to counteract this increase in concentration by consuming \(O_2(g)\) to produce more ClO(g). As a result, the equilibrium amount of \(Cl_2(g)\) decreases, and the equilibrium amount of ClO(g) increases. Therefore, the addition of \(O_2(g)\) will shift the equilibrium towards the right side of the reaction and will consume \(Cl_2(g)\).For more questions on equilibrium
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Draw 4 decyne structure
Answers
The structure of the alkyne 4 - decyne is shown in the image attached.
How do you draw 4-decyne?Alkyne functional group compounds with a triple bond made of carbon and carbon contain 4-decyne (C). The triple bond is found at the fourth carbon position in the ten-carbon chain (decyne) of 4-decyne.
Nine hydrogen atoms (H) are joined to the first nine carbon atoms (C), starting from the left side.
In conclusion, 4-decyne is made up of a chain of ten carbon atoms, with the fourth carbon atom serving as the center of a carbon-carbon triple bond (C). Except for the carbon involved in the triple bond, all carbon atoms are connected to hydrogen atoms.
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