Answers
Answer:
It holds heat from the sun close to Earth.
Explanation:
Hope this helps and have a great day. :)
Related Questions
A car traveling at 30 m/s comes to a stop in 5 seconds. What is the acceleration of this car?
Answers
Answer:
6m/s brainliest?
Explanation:
Answer:
6 m/s
Explanation:
Determine the chemical formula for the molecule shown.
-Which of the following terms could most likely apply to the molecule shown?
hydrocarbon
polymer
organic
inorganic
Explain your answer to the second part of the question above.
Answers
Answer: Formula is C4H8O. In every branch of line formula there are Carbon atom. Carbon makes 4 bonds so In branch left in which two CH3-groups are attached there are also an Hydrogen aton which is not shown.
Explanation: Molecule is organic, it is classified as aldehyde.
Hydrocarbons contains only Carbon and Hydrogen atoms, Organic molecules can contain also other atoms.
Reactions of aldehydes are reduction to alcoholes or oxidation to carboxylic acids. It can not for a polymer.
Determine the hydroxide ion concentration in
a solution that is 0.00034 M Ca(OH)2.
Answer in units of M.
Answers
Answer:
[tex]0.00068M[/tex]
Explanation:
Hello there!
In this case, according to the ionization of calcium hydroxide, a strong base:
[tex]Ca(OH)_2\rightarrow Ca^{2+}+2OH^-[/tex]
Thus, since there is a 1:2 mole ratio of calcium hydroxide to hydroxide ions, we apply the following proportional factor to obtain:
[tex]0.00034\frac{molCa(OH)_2}{L}*\frac{2molOH^-}{1molCa(OH)_2} \\\\=0.00068\frac{OH^-}{L}\\\\=0.00068M[/tex]
Regards!
Calculate the molarity of the two solutions.
The first solution contains 0.200 mol of NaOH in 2.00 L of solution.
The second is 15.5G of NaCl in 671mL of solution
Answers
Answer:
a) 0.100 M
b) 0.395 M
Explanation:
a) Calculate the molarity of a solution that contains 0.200 moles of NaOH (solute) in 2.00 L of solution
We will use the following expression for molarity.
[NaOH] = moles of solute / liters of solution
[NaOH] = 0.200 mol/2.00 L = 0.100 M
b) Calculate the molarity for a solution that contains 15.5 g of NaCl (solute, 58.44 g/mol) in 671 mL of solution
We will use the following expression for molarity.
[NaCl] = mass of solute / molar mass of solute × liters of solution
[NaCl] = 15.5 g / 58.44 g/mol × 0.671 L = 0.395 M
6. (08.02 MC)
What is the molarity of a solution prepared by dissolving 10.0 grams of NaOH in enough water to make a solution with a total volume of 2.40 liters? (5 points)
O 0.104 M NaOH
O 0.201 M NaOH
0 0.361 M NaOH
O 0.412 M NaOH
Answers
Answer:0.104
Explanation:
Answer:
0.104
Explanation:
convert grams to moles “10.0 x 1/40”
divide moles by the liters 0.25/2.4
answer: 0.104
There are three common functional groups in organic chemistry that are readily ionized by adjusting the pH of the aqueous solution during an extraction. Name and write the chemical structure of these three functional groups, and show each of them in both their neutral and ionized forms.
Answers
Answer:
Following are the solution to the given question:
Explanation:
Please find the ionic compound in the solution file:
Following are the three functional groups which affected by pH:
Carboxylic acidPhenol functional group Amine functional groupHow many molecules are present in 4.5
moles of H2O?
Answers
Answer:
Mole of the H2O = 4.5
Number of molecules =4.5 multipled by avogadro's number.
What do scientists use the term “light-year” to describe?
Answers
Answer:
Astronomers measure distance in space or the distance light travels in one Earth year.
" A light-year is how astronomers measure distance in space. It's defined by how far a beam of light travels in one year – a distance of six trillion miles."
What does pressure measure
Answers
Answer:
Pressure measurement is the analysis of an applied force by a fluid (liquid or gas) on a surface. Pressure is typically measured in units of force per unit of surface area.
hope this helps! mark as brainlist! :D
Answer:
THIS IS YOUR ANSWER I HOPE IT IS HELPFUL PLZ MARKS ME BRANILY_HCN+_CUSO4=_CUSO4+_CU(CN)2
Answers
[0]HCN + CuSO4 = CuSO4 + [0]Cu(CN)2
Thus is because the left-hand side contain Hydrogen, whereas the right-hand side does not. To balance an equation, an element cannot be added. And therefore, Hydrogen must be removed completely, along with Carbon and Nitrogen, as they each formed a chemical bond with hydrogen, and the composition would change if so.
Explanation chemically :
HCN + CuSO4 = CuSO4 + Cu(CN)2
Left-hand side :
1 H
1 C
1 N
1 Cu
1 S
4 O
Right-hand side :
0 H
1 Cu
1 S
4 O
1 Cu
2 C
2 N
Comparison between the two sides :
First:
1 H = 0 H (therefore to balance it, times the left hand side by 0 : (0)(1) H = 0 H = 0 H)
Because we're multiplying the left-hand side hydrogen atom by 0, and it is bonded with Carbon and Nitrogen, Carbon and Nitrogen is multiplied by 0 as well.
(0) H x (0) C x (0) N = (0) HCN = 0
Hydrogen is balanced.
Second :
Left-hand side Carbon and Nitrogen is 0 (0HCN).
Therefore, right-hand side Carbon and Nitrogen must also be 0.
Cu(CN)2
0 should be multiplied to the CN bracket to bring them to 0. However, there is a Cu atom in from of the CN molecule. So the 0 would be placed in front of the Cu atom, like this :
(0) Cu(CN)2.
The 0 in front of the Cu atom ensures that all the atoms will be multiplied by 0
(0 Cu(CN)2 = (0) Cu x (0) (CN)2 = 0
Carbon and Nitrogen are balanced.
Third :
CuSO4 is already balanced as both sides have an equal amount of each atom.
Therefore, the answer is [0] HCN + [1] CuSO4 = [1] CuSO4 + [0] Cu(CN)2
A 0.150-kg sample of a metal alloy is heated at 540 Celsius an then plunged into a 0.400-kg of water at 10.0 Celsius, which is contained in a 0.200-kg aluminum calorimeter cup. The final temperature of the system is 30.5 Celsius. What is the specific heat of the metal alloy in J/Kg.Celsius
Answers
Answer:
[tex]C_{alloy}=0.497\frac{J}{g\°C}[/tex]
Explanation:
Hello there!
In this case, according to this calorimetry problem on equilibrium temperature, it is possible for us to infer that the heat released by the metal allow is absorbed by the water for us to write:
[tex]Q_{allow}=-(Q_{water}+Q_{Al})[/tex]
Thus, by writing the aforementioned in terms of mass, specific heat and temperature, we have:
[tex]m_{alloy}C_{alloy}(T_{eq}-T_{alloy})=-(m_{water}C_{water}(T_{eq}-T_{water})+m_{Al}C_{Al}(T_{eq}-T_{Al})[/tex]
Then, we solve for specific heat of the metallic alloy to obtain:
[tex]C_{alloy}=\frac{-(m_{water}C_{water}(T_{eq}-T_{water})+m_{Al}C_{Al}(T_{eq}-T_{Al})}{m_{alloy}(T_{eq}-T_{alloy})}[/tex]
Thereby, we plug in the given data to obtain:
[tex]C_{alloy}=\frac{-(400g*4.184\frac{J}{g\°C} (30.5\°C-10.0\°C)+200g*0.900\frac{J}{g\°C}(30.5\°C-10.0\°C)}{150g(30.5\°C-540\°C)} \\\\C_{alloy}=0.497\frac{J}{g\°C}[/tex]
Regards!
What is the total number of moles of O2(g) that must react completely with 5.00 moles of C4H10(g)?
Answers
Answer:
32.5 moles of O2(g) are necessaries for a complete reaction
Explanation:
Based on the reaction of combustion of C4H10(g):
C4H10(g) + 13/2 O2(g) → 4CO2(g) + 5H2O(g)
1 mole of C4H10 needs 13/2 moles O2 for a complete reaction.
That means, the moles of O2 required for a reaction of 5.00 moles of C4H10 are:
5.00 moles C4H10 * (13/2mol O2 / 1mol C4H10) =
32.5 moles of O2(g) are necessaries for a complete reaction
How many grams are in 0.5 moles of CO2?
Answers
Answer:
0.5 mole CO2=0. 5×44=22 gm.
4. The device shown is a
that's used to measure the heat transferred by a reaction under constant volume.
A. bomb calorimeter
B. reaction vessel
C. thermometer
D. coffee-cup calorimeter
Answers
Answer:
The device shown is a calorimeter that used to measure the heat transfer by a reaction under constant volume.
Explanation:
What would the products be for the reaction between Na3PO4 + MgSO4?
Answers
MgSO4 + Na3PO4 = Na2SO4 + Mg3(PO4)2
Answer: The products of Na3PO4 + MgSO4 are Na2SO4 + Mg3(PO4)2
Explanation:
What is one movement that liquid water CANNOT do while on or at the Earth's surface? (GIVE RIGHT ANSWER OR I DELETE 100 POINTS)
Answers
Answer:
One movement that i can't do is float in mid air
Explanation:
omg posting takes away point WHAT.
Answers
Answer:
yep
Explanation:
that why I have someone else post questions for me. But its a good incentive to help others to help you to help me to you to help others.
10 ml of a 0.25M solution is diluted to make exactly 250 ml of solution. What's the concentration of the diluted solution?
Answers
Answer:
0.01 M
Explanation:
As this problem deals with a dilution process, we can solve it by using the following formula:
C₁V₁=C₂V₂Where subscript 1 stands for the initial concentration and volume, while 2 stands for the final conditions.
That means that in this case:
C₁ = 0.25 MV₁ = 10 mLC₂ = ?V₂ = 250 mLWe input the given data:
0.25 M * 10 mL = C₂ * 250 mLC₂ = 0.01 MWhat [H3O+] in a solution of a PH of 0.60 is
Answers
Explanation:
H+=10^-pH
- Hope that helps! Please let me know if you need further explanation.
1) For the following molecules: - Draw the Lewis structures/dots - Determine the polarity (polar or non-polar). - List all intermolecular forces. a) CF4 b) CH2Br2 c) H2CO3 d) N2 e) PCl3 f) XeF2 g) NH4
Answers
Answer:
ed
Explanation:
ed
How are solutions and compounds similar?
Answers
Answer:
hope you liked it!!!!!!
A compound is a pure substance that is composed of elements chemically bonded in definite proportions. A compound can be broken down into simpler substances only by chemical reactions, such as electrolysis.
A solution is a homogeneous mixture, meaning that it is the same throughout. A solution is composed of one or more solutes dissolved in a solvent. The proportions of the solute(s) can vary, as the components of a solution are not chemically bonded. The components of a mixture can be separated by physical means, such as filtration and distillation
What is the best reason for carbon dioxide existing as a gas at standard temperature and pressure?
A)
Carbon dioxide molecules have the same spin within each of their orbitals.
As a result, the carbon dioxide molecules are less attracted to each other
when compared to the intramolecular bonds.
B)
Coulomb's law shows that the interaction between protons and electrons
within the atoms of each carbon dioxide molecule is significantly stronger
than the proton-electron interaction between each molecule.
C)
The entropy of carbon dioxide is much greater than the entropy of its
surroundings.
D)
Carbon dioxide has too much internal energy that the molecule-molecule
interaction cannot keep the molecules together.
Answers
How are tadpoles and larvae similer
Answers
Answer: Tadpole, also called polliwog, aquatic larval stage of frogs and toads. Compared with the larvae of salamanders, tadpoles have short, oval bodies, with broad tails, small mouths, and no external gills. The internal gills are concealed by a covering known as an operculum.
Explanation:
Pls give theeee answerrrrrrrr
Answers
QUESTION 29 The PH of a solution whose Hydroxide ion concentration is 0.45M is:
A. 0.071
B. 0.347
C. 13.65
D. 12.48
E. 12.7
Answers
Answer:
C. 13.65.
Explanation:
With the given hydroxide ion concentration [OH⁻] we can calculate the pOH of the solution, using the following formula:
pOH = -log[OH⁻]pOH = 0.35Then, with the pOH we can proceed to calculate the pH of the solution, with the formula:
pH + pOH = 14pH = 14 - pOHpH = 13.65The correct answer is option C. 13.65.
The enthalpy of formation of water is -285.8 kJ/mol. What can be inferred from this statement? O The enthalpy of the products is equal to the enthalpy of the reactants. O Heat is absorbed during the process. O Heat is released during the process. The enthalpy of the products is more than the enthalpy of the reactants.
Answers
Answer:
the answer is c
Explanation:
i did the test
The enthalpy of the formation of water is -285.8 kJ/mol. The information that can be made by the statement is heat is released during the process. The correct option is C.
What is enthalpy?Enthalpy is the volume times the pressure times the internal energy of the system. It is an entity of thermodynamics. It is the measurement of the energy in a thermodynamic system. The enthalpy totals the internal energy plus pressure and volume.
The statement that is given here is given that enthalpy is -285.8 kJ/mol. The value is negative, so the energy is released here. When energy is gained the energy will be positive and when the energy is released it is negative.
Thus, the correct option is C, heat is released during the process regarding the given statement of enthalpy.
To learn more about enthalpy, refer to the link:
https://brainly.com/question/24136717
#SPJ6
what is the most metallic item on the pterotic table
Answers
Answer:
francium or cesium
PLEASE HELP!! ORGANIC CHEMISTRY
A sample of a diatonic gas is loaded into an evacuated bottle at STP. The 0.25 L bottle contains 1.76 grams of the unidentified gas. Calculate the molar mass of the gas. What is the identity of the diatomic gas?
Answers
Answer:
(a) 157.7 g
(b) 7.04 g/dm³
Explanation:
(a) From the question,
According to Avogadro's Law,
1 mole of every gas at STP occupies a volume of 22.4 dm³
But mass of 1 mole of the diatomic gas = molar mass of the gas.
This Implies that,
The molar mass of the gas at STP occupies a volume of 22.4 dm³
From the question,
If,
0.25 L bottle contain 1.76 g of the gas,
Therefore,
Molar mass of the gas = (1.76×22.4)/0.25
Molar mass of the gas = 157.7 g.
(b) Density of the gas = mass/volume
D = m/v
Given: m = 1.76 g, v = 0.25 L = 0.25 dm³
Therefore,
D = 1.76/0,25
D = 7.04 g/dm³
Every cell is surrounded by a thin membrane. What is the main function of this cell membrane?
A.
to protect the cell from invasion by bacteria and viruses
B.
to allow each cell to form connections with other cells
C.
to limit the size of the cell and keep the shape of the cell the same
D.
to separate the inside of the cell from the outside environment
Answers
Answer:
The main function of the cell membrane is to protect the cell from the outer environment.
Answer: The answer is D.) to separate the inside of the cell from the outside environment
Explanation:
Spread your smarts while you wait.
Answers
Answer:
lol ok 1+1=2 2 x 2=4
have a good day :)
Explanation:
Answer: oke
Explanation: have a goood day!