Answers
The density of the block is 5 g/mL
To solve the question given above, we'll begin by calculating the volume of the block. This can be obtained as follow:
Volume of water = 100 mL
Volume of water + block = 125 mL
Volume of block =?Volume of block = (Volume of water + block) – (Volume of water)Volume of block = 125 – 100
Volume of block = 25 mLFinally, we shall determine the density of the block. This can be obtained as follow:
Volume of block = 25 mL
Mass of block = 125 g
Density of block =?Density = mass / volume
Density = 125 / 25
Density of block = 5 g/mLTherefore, the density of the block of is 5 g/mL
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Related Questions
Which of the following molecules would you expect to have the highest boiling point?
1
O Molecule 3
O Molecule 1
O Molecule 4
O Molecule 2
2
3
OH
O
4
Answers
The highest boiling point based on the data is option 4
What is the highest boiling point?Compared to alcohols of comparable molecular weight, carboxylic acids often have higher boiling temperatures. Between the hydrogen atoms of adjacent molecules and the oxygen in the carboxyl group of carboxylic acids, strong intermolecular hydrogen bonds can develop. Because it takes more energy to break the intermolecular interactions and change the substance from a liquid to a gas during boiling, these hydrogen bonds help materials have higher boiling temperatures.
Although carboxylic acids and alcohols are both capable of forming hydrogen bonds, carboxylic acids have higher boiling temperatures due to the extra carboxyl group that they contain.
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The owner of Grizzly Tea Shack is thinking about adding iced tea to the menu. He
thinks he can do this with minimal effort by adding ice cubes to cups of hot tea.
He decides to measure how changing the number of ice cubes in a glass of
freshly brewed tea affects its cooling rate.
To begin, the owner varies the number of ice cubes, x, he puts in glasses of
freshly brewed tea. He then checks the temperature (in Celsius), y, of each glass
after 10 minutes.
Ice cubes Temperature after 10 minutes (in degrees Celsius)
2
17
3
5
6
6
20
10
11
15
Round your answers to the nearest thousandth.
Answers
Answer: 5,266
Explanation:
5,266
Explain the difference between mass and weight and
how they are measured.
Answers
\(\bold{Hiya...}\)
Explain the difference between mass and weight and how they are measured ?The difference between of mass, cause- mass can be best understood as the amount of matter present in any object or body. Whereas weight is the force exerted by the gravity on that object mg. Note that mass is independent of everything but weight is different on the earth.Hope It Helps~
A n s w e r : -⋆ \(\sf{NicoChu}\) ⋆
which gas is fossil fuel
Answers
Answer:
methane
Explanation: methane is obtained from the decaying of flora and fauna mostlyunder damp
Arrange the following 0.10 M aqueous solutions in order of increasing pH:
a. NaOH
b. HBr
c. NaCH3CO2
d. KBr
e. NH4Br.
Answers
Answer:
The correct answer is HBr<NH4Br<KBr<NaCH3CO2<NaOH.
Explanation:
When salt is added to the water, the formation of acid and base takes place. The pH helps in predicting the basicity, acidity, and neutrality of a compound.
It is known that NaOH is a strong base, thus, its solution will be basic, and therefore, the pH of NaOH will be greater than 7.
The solution of HBr will be acidic as HBr is the strong acid, thus, its pH will be less than 7.
In dissolving NaCH3CO2 in water, the formation of CH3COOH, which is a weak acid, and NaOH that is, a strong base takes place. Therefore, as NaOH is the strong base, the solution will be basic, and the pH of NaCH3CO2 will be greater than 7.
On dissolving KBr in water, HBr, that is, a strong acid, and KOH, that is, a strong base is produced. Therefore, as HBr is the strong acid, and KOH is the strong base, the solution will be neutral. Thus, the pH of KBr will be equivalent to 7.
On dissolving NH4Br in water, the formation of HBr, that is, strong acid, and NH4OH, that is, the weak base takes place. Therefore, as HBr is the strong acid, the solution will be acidic, and the pH of NH4Br will be less than 7.
Hence, the increasing order of pH of 0.10 M aqueous solution will be,
HBr<NH4Br<KBr<NaCH3CO2<NaOH
The order of increasing pH of the solutions is; HBr < NH4Br < KBr < NaCH3CO2 < NaOH.
pH is a number that indicates the degree of acidity or alkalinity of a substance. The pH scale ranks from 0 - 14. 0 - 6.9 indicates acidity, 7 indicates neutrality while 8 - 14 indicates alkalinity.
The order of increasing pH of the solutions is; HBr < NH4Br < KBr < NaCH3CO2 < NaOH. Recall that NH4Br yields an acidic solution while NaCH3CO2 yields a basic solution.
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The diagrams below show the alignment of the Sun, the Moon, and Earth.
Answers
Answer:A
Explanation: I learned it from a gizmo
What is the maximum number of electrons that each of the first three electron orbits can hold, starting from the nucleus?
Answers
draw the structure(s) of the branched ether(s) with the chemical formula c4h10o?
Answers
The structure of the branched ether of chemical formula c4h10o, is \(CH_3 - CH_2 - CH_2 - O - CH_2 - CH_2 - CH_3.\)
\(C_4H_{10} O\) is a branched ether, also known as an alkoxyalkane or a glycol ether. It is an organic compound composed of four carbon atoms, ten hydrogen atoms, and one oxygen atom. Its molecular formula is \(C_4H_{10} O\)and its molecular weight is 86.13 g/mol.
Its structure is linear, with a carbon backbone and an oxygen atom attached to two of the carbons in the chain. The oxygen atom is then connected to two methyl (\(CH_3\)) groups, one on each side of the central carbon atom.
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In an industrial process ethanol C2H60 burns with O2 to produce heat. Each mole of ethanol produces 8842 joules during the reaction.
C2H5OH (1) + 3 O2(g) 2 CO2(g) + 3 H2O(0) + 8842 Joules
How many Kilojoules are obtained from burning 982.6 g of ethanol?
Answers
Answer:
\(189kJ\)
Explanation:
Hello!
In this case, since one mole of ethanol release 8,842 J per 1 mole of ethanol, we can write:
\(\frac{8,842J}{1molC_2H_6H}\)
Thus, since we need the energy released by 982.6 g of ethanol, we compute the moles in such mass of fuel:
\(n=982.6g\frac{1mol}{46.08g} =21.3mol\)
Therefore, the result is:
\(\frac{8,842J}{1mol}*21.3mol=188,545J\)
Which in kJ is:
\(189kJ\)
Best regards!
How many inches are in 4.5 miles?
Answers
63360 x 4.5 = 285,120 inches
so there is 285,120 inches in 4.5 miles
for (figure 1), does the surface enclose a net positive charge, a net negative charge, or no net charge?
Answers
According to the given statement There is thus no net charge on the surface.
What is positive charge with example?Protons can be added to an atom or other substance with a neutral charge to produce a positive charge. A neutrally charged item can also acquire a positive charge by having its electrons removed. The positive end of a battery, also known as the cathode, attracts electrons because of its positive charge.
Are protons positive charges?A neutron is a subatomic particle with a positive charge. Protons are held together in the atom's nucleus by the strong nuclear force. The neutron is a kind of subatomic particle without charge (they are neutral).
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how would the function of the galvanic cell be affected if the salt bridge contained a very diluted solution of NaNo3? explain
Answers
Answer:
The salt bridge serves to complete the electrical circuit in the galvanic cell. It is pertinent that the salt bridge ions are in high concentrations as this allows electron mobility and keeps each half cell electronically neutral. The diluted salt bridge wuld cause a buildup of positive charge in the anode and negative charge in the cathode and the electrode half reactions which either reduce or oxidise species would halt. Causing the cell to stop producing electronic energy, impedeing the proper functioning of the galvanic cell.
When zinc reacts with copper sulfate solution, zinc sulfate solution and copper are formed.(i) An experiment was carried out to measure the temperature change when zinc powder reactswith copper sulfate solution.initial temperature of copper sulfate solution = 20 °Cfinal temperature of mixture after the reaction = 46 °CExplain what the temperature readings show about the type of heat change that occurs duringthis reaction.
Answers
The temperature increase from 20 °C to 46 °C indicates that the reaction between zinc and copper sulfate solution is exothermic, with heat being released into the surroundings.
In the given reaction between zinc and copper sulfate solution, the temperature change can provide insights into the type of heat change occurring during the reaction. Based on the provided information, the initial temperature of the copper sulfate solution was 20 °C, and the final temperature of the mixture after the reaction was 46 °C.
The temperature increase observed in this reaction indicates an exothermic heat change. An exothermic reaction releases heat energy into the surroundings, resulting in a temperature rise. In this case, the reaction between zinc and copper sulfate solution is exothermic because the final temperature is higher than the initial temperature.
During the reaction, zinc displaces copper from copper sulfate to form zinc sulfate and copper metal. This displacement reaction is known as a single displacement or redox reaction. Zinc is more reactive than copper and therefore replaces copper in the compound.
The formation of new chemical bonds during the reaction releases energy in the form of heat. This energy is transferred to the surroundings, leading to an increase in temperature. The heat released is greater than the heat absorbed, resulting in a net increase in temperature.
The exothermic nature of this reaction can be explained by the difference in bond energies between the reactants and products. The breaking of bonds in the reactants requires energy input, while the formation of new bonds in the products releases energy.
In this case, the energy released during the formation of zinc sulfate and copper metal is greater than the energy required to break the bonds in copper sulfate and zinc.
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A solution of carbonic acid, H₂CO3(aq), is at equilibrium. How would thesystem change if more carbonic acid were added to the solution?A. More H and HCO3 would be produced.B. More H and less HCO3 would be produced.C. Less H and HCO3 would be produced.D. Less H and more HCO3 would be produced.
Answers
Answer
A. More H⁺ and HCO₃⁻ would be produced.
Explanation
A solution of carbonic acid, H₂CO3(aq), at equilibrium is represented as shown below:
H₂CO₃(aq) ⇌ H⁺ (aq) + HCO₃⁻(aq)
The addition of more carbonic acid to the solution will shift the system to the right; that is, more H⁺ and HCO₃⁻ would be produced.
What volume of 1.75 M hydrochloric acid (HCl aq) must be diluted with water to prepare 0.500 L of 0.250 M hydrochloric acid?
Answers
Answer:
\(V_1=0.0714L\)
Explanation:
Hello there!
In this case, since we need to dilute the 1.75-M HCl, and the total number of moles remain unchanged, we can write:
\(n_1=n_2\)
And in terms of volume and concentration:
\(C_1V_1=C_2V_2\)
Thus, we can solve for the volume of the concentrated HCl as shown below:
\(V_1=\frac{C_2V_2}{C_1}\)
Therefore, we plug in the data to get:
\(V_1=\frac{0.250M*0.500L}{1.75 M}\\\\V_1=0.0714L\)
Best regards!
Identify the type of reaction for each of the following as combination, decomposition, single replacement, double replacement, or combustion:
a. A metal and a nonmetal form an ionic compound.
b. A compound of hydrogen and carbon reacts with oxygen to produce carbon dioxide and water.
c. Heating calcium carbonate produces calcium oxide and carbon dioxide.
Answers
Answer:
a
Explanation:
pls sdame
A solution of cough syrup contains 5.00% active ingredient by volume. If the total volume of the bottle is 80.0 mL , how many milliliters of active ingredient are in the bottle?
Answers
Answer:
someone is in my mind and it is telling me 5.55m
Explanation:
Answer:
4 mL
Explanation:
4mL is 5% of 80mL. Therefore my answer is right.
FeCI2 + Na2CO3 = FeCO3 + NaCI Balance this equation please
No links
Answers
FeCl2 + Na2CO3 = FeCO3 + 2NaCl
How can a chemical equation be balanced? Responses by using exponents to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using exponents to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using new elements to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using new elements to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using subscripts to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using subscripts to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants by using coefficients to adjust the number of atoms of each element so that the products have the same number of atoms of the same element as in the reactants
Answers
The balancing of chemical equations is based on the law of conservation of mass.
How could a chemical process be made to balance out? Which integers can be changed, and which cannot?
When an equation is balanced, the coefficients can only be changed (the numbers in front of molecules or atoms).
The coefficients are indicated by the numerals in front of the molecule. Subscripts are the smaller numerals found following atoms. These cannot be changed while balancing chemical equations!
How is a chemical equation brought to equilibrium?
the algebraic balancing technique. Chemical equations can be balanced by assigning algebraic variables as stoichiometric coefficients to each species in the unbalanced chemical equation.
Equations in mathematics are used to calculate the values of each of these variables
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1. Analysis of a hydrate of iron(III) chloride revealed that in a 10.00g sample of hydrate, 6.00 g is anhydrous iron(III) chloride and 4.00 g is water. Determine the formula and the name of the hydrate.
Answers
Answer:
FeCl₃ . 6H₂O, BRAINLIST PLZ
Explanation:
1) The chemical formula of iron(III) chloride is FeCl₃ (the oxidation number of Fe is 3+, and the oxidation number of Cl is 1-).
2) The formula that you are lookin for the hydrate is of the type FeCl₃ . n H₂O, where n is the number of water molecules per each unit formula of Fe₂O₃.
3) Find the mass of anhydrous FeCl₃ by difference:
mass of FeCl₃ = mass of the sample - mass of the water in the sample
mass of FeCl₃ = 5.49g - 2.20 g = 3.29 g
4) Convert the mass of FeCl₃ in number of moles
number of moles = mass in grams / molar mass
molar mass of FeCl₃ = 55.845 g/mol + 3×35.453 g/mol = 162.204 g/mol
number of moles = 3.29 g / 162.204 g/mol = 0.0203 mol FeCl₃
5) Convert the mass of water in number of moles:
molar mass of water = 18.015 g/mol
number of moles of water = mass in grams / molar mass = 2.20 g / 18.015 g/mol = 0.122 moles H₂O
6) Find the mole ratio of water to iron chloride:
0.122 mol water / 0.0203 mol iron chloride = 6.01 ≈ 6
Therefore, the complete formula of the hydrate is FeCl₃ . 6H₂O,
In a nuclear power plant, what is used to change water into steam?
A. the burning nutrual gas
B. geothermal energy
C. captured solar energy
D. heat released from nuclear fission reactions
Answers
Answer:
D
Explanation:
]All organic compounds contain the element carbon but, not all compounds containing the element “carbon”are organic .Justify this statement.
Answers
The statement "All organic compounds contain the element carbon, but not all compounds containing the element 'carbon' are organic" can be justified based on the definition and characteristics of organic compounds.
Organic compounds are compounds primarily composed of carbon and hydrogen atoms, often with other elements like oxygen, nitrogen, sulfur, and phosphorus. These compounds are typically associated with living organisms and are known for their unique properties and behavior, including the ability to form complex structures, exhibit covalent bonding, and undergo organic reactions.
On the other hand, there are compounds that contain carbon but are not classified as organic. One notable example is carbon dioxide (\(CO_{2}\)), which is a simple inorganic compound composed of carbon and oxygen. Carbon dioxide does not possess the characteristic properties of organic compounds, such as the ability to form long chains or undergo organic reactions.
Additionally, there are inorganic compounds like carbonates (such as calcium carbonate) and carbides (such as calcium carbide) that contain carbon but are not considered organic. These compounds have distinct chemical and physical properties different from those of organic compounds.
In summary, while all organic compounds contain carbon, not all compounds containing carbon are organic. The classification of a compound as organic or inorganic depends on its overall molecular structure, bonding, and characteristic properties.
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what element has more protons than other elements in its group
Answers
Answer:
umm i am not sure i really understand the question but uranium has the highest number of Protons. It has a total of 92 protons. And if that doesn't work than the Atomic number should tell the number of protons are in the element
Explanation:
Observe the movement of the skater during his run on the ramp click bar graph at what position is the potential energy of the skater the highest
Answers
Potential energy is stored energy that is affected by the relative location of different components of a system. When a spring is squeezed or expanded, its potential energy increases.
What is potential energy simple answer?Potential energy is the energy retained by an object as a result of its location relative to other objects, internal stresses, electric charge, or other variables. Although it has ties to the ancient Greek scholar Aristotle's idea of potentiality, the word potential energy was coined by the 19th-century Scottish engineer and physicist William Rankine.
The gravitational potential energy of an object, the elastic potential energy of a stretched spring, and the electric potential energy of an electric charge in an electric field are all examples of common kinds of potential energy. The joule, denoted by the sign J, is the measure of energy in the International System of Units (SI).
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Identify the noble gas that has atoms with the
same number of electrons as a chloride ion in
table salt.
Answers
Answer:
Ar
Explanation:
Chlorine has an atomic number of 17. That means that it has 17 protons and 17 electrons, thus being electrically neutral. When it gains 1 electron to form the chloride ion, the total number of electrons is 17 + 1 = 18.
Argon is a noble gas with an atomic number of 18, that is, it has 18 protons and 18 electrons.}
Then Cl⁻ has the same number of electrons as Ar.
Please help !!!
The atomic number of sodium is 11. How many neutrons does an isotope with a mass number of 22 have ?
Answers
Explanation: The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.
Answer:
11
Explanation:
Question If 1.2 g of a gas at 3.5 atm of pressure dissolves in
1.0 L of water at 25°C, how much pressure is needed to
dissolve 2.4 g of the gas in 1.0 L of water at the same
temperature?
Answers
Answer:
7.1 atm
Explanation:
Step 1: Calculate Henry's constant
At P = 3.5 atm, we can dissolve 1.2 g of a gas in 1.0 L of water, that is, the concentration is C = 1.2 g/1.0 L = 1.2 g/L. We can calculate Henry's constant, which relates the concentration and the pressure of a gas dissolving in a liquid, using Henry's law.
C = k × P
k = C/P = (1.2 g/L)/3.5 atm = 0.34 g/L.atm
Step 2: Calculate the pressure needed to dissolve 2.4 g of the gas in 1.0 L of water
We want to dissolve 2.4 g of the gas in 1.0 L of water, that is, C = 2.4 g/1.0 L = 2.4 g/L. We can calculate the pressure required using Henry's law.
C = k × P
P = C/k = (2.4 g/L)/(0.34 g/L.atm) = 7.1 atm
solve the x:15dm³=x cm³
BRAINLIEST
Answers
Answer:
15,000 cm^3
Explanation:
Think of 1 cm^3 as a cube that has side lengths of 1 cm. We know that 1 cm = 0.1 dm, so 1 cm^3 = 0.001 dm^3.
Using dimensional analysis, or the factor-label method, 15 dm^3 x (1 cm^3/0.001 dm^3) = 15,000 cm^3.
Answer:
X = 15d / c
Explanation:
make me brainliest please?
how does particle motion effect pressure
Answers
Answer:
The pressure is a result of the motion of particles in the gas and is a measure of how many times the particles in the gas collide with each other and with the walls of the container. Temperature is a measure of the kinetic energy that the particles have.
Explanation:
I need the math to it to show how I got to the answer, please help #2
Answers
The number of moles of the water produces by the 1.3 moles of O₂ is 1.00 mol of H₂O. The correct option is C.
The chemical equation is as :
2C₄H₁₀ + 13O₂ ----> 8CO₂ + 10H₂O
The moles of the O₂ = 1.3 moles H₂O
The molar mass of the O₂ = 32 g/mol
2 moles of the C₄H₁₀ produces the 10 moles of the water,
13 moles of O₂ produces the 10 moles of H₂O
The moles of the H₂O = (10/13) × 1.3
The moles of the H₂O = 1 mol
The number of moles of the water is 1 mol of the H₂O and the moles of the oxygen that is O₂ is the 1.3 moles.. Therefore, the correct option is C.
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