Answer:
It has a higher boiling point than water, and it likely has a stronger electrostatic forces between its molecules than water.
Explanation:
The unknown substance has a higher boiling point than water, and it likely has stronger electrostatic forces between its molecules than water.
What is the meaning of Boiling Point ?The temperature at which a liquid's saturated vapour pressure equals the air pressure surrounding it is known as the boiling point.
It is given that an unknown substance has a boiling point of 174°C.
The boiling point of water is 100°C.
So the boiling point of the unknown substance is higher than that of water.
Higher boiling point signifies more heat required to break the bonds.
Higher boiling point means existence of strong non covalent bonds.
This means it likely has stronger electrostatic forces between its molecules than water.
Therefore Option A is the correct answer.
To know more about Boiling Point
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Use the heat equation to find out how many joules of energy are needed
to raise the temperature of 67 grams of water form 20°C - 45°C. What is the
answer in kilojoules?
(specific heat of water is 4.2 J/gºC.)
Answer:
About 7.0 × 10³ J or 7.0 kJ
Explanation:
We want to determine the amount of energy needed to raise the temperature of 67 grams of water from 20°C to 45°C.
We can use the heat equation:
[tex]\displaystyle q = mC\Delta T[/tex]
Where C is the specific heat of water.
Substitute and evaluate:
[tex]\displaystyle \begin{aligned} q & = (67\text{ g})\left(\frac{4.2\text{ J}}{\text{g-$^\circ$C}}\right)\left(45^\circ \text{ C}- 20.^\circ\text{ C}\right) \\ \\ & = (67\text{ g})\left(\frac{4.2\text{ J}}{\text{g-$^\circ$C}}\right)(25^\circ \text{ C}) \\ \\ & = 7.0\times 10^3 \text{ J}\end{aligned}[/tex]
Recall that there are 1000 J in a kJ. Hence:
[tex]\displaystyle \begin{aligned} q & = 7.0\times 10^3 \text{ J} \cdot \frac{1\text{ kJ}}{1000\text{ J}} \\ \\ & = 7.0 \text{ kJ}\end{aligned}[/tex]
In conclusion, it will take about 7.0 × 10³ J or 7.0 kJ of energy to raise the temperature of 67 grams of water from 20 °C to 45 °C.
Hello do anyone on here no something about Gizmos Fan Cart Physics?
Answer:
yes here is the answer key
for the last question it is a challenge question, here is the answer:
(A) The mass of the cart is 1.214 kg
(B) The mass of one fan is 1.262 kg
(C) The mass of one of the draggable mass units is 3.131 kg
Explanation:
What Is the answers?
Answer:
oxygen is responsible for rusting
I don’t have baking powder or all of the 10 subs I found online. I wanna make pancakes any suggestions
Answer:
flour is the main ingredient sooo you need flour,sugar,salt milk,eggs,vegetable oil,vanilla optional.you can add baking powder or baking soda optional.
How many moles are in 50 g of CO2
Answer:
1.1 mol
Explanation:
n=m/M, where n is moles, m is mass, and M is molar mass.
M of CO2 = 12.01+16.00+16.00 = 44.01g/mol
n=50g/44.01g/mol
n = 1.13610543 mol
n ≈ 1.1 mol
Hope that helps
A mixture of 0.384 M H2O, 0.384 M Cl2O, and 0.652 M HClO are placed in a vessel at 25 oC. Calculate the equilibrium concentration (in molarity) of HClO at the same temperature.
Equilibrium concentration of HOCl at 25°C is 0.140 M
The equation of the reaction at equilibrium is given below:
H₂O (g) + Cl₂O (g) ⇄ 2 HOCl (g)
Equilibrium constant, Kc = 0.0900 at 25°C
An ICE chart for the reaction is set up below
H₂O (g) + Cl₂O (g) ⇄ 2 HOCl (g)
I 0.384 0.384 0.652
C -x -x + 2x
E 0.384 - x 0.384 - x 0.652 + 2x
The equation of the equilibrium constant is given as;
Kc = [tex]\frac{[HOCl]^2}{[H_{2}O][Cl_{2}O]}[/tex]
substituting the values into the equation:
Kc = [tex]\frac{(0.652 + 2x)^2}{( 0.384 - x)( 0.384 - x)}[/tex] = 0.0900
4x² + 2.608x + 0.425 = 0.0900 (0.147 - 0.768x + x²)
4x² - 0.09x² + 2.677x - 0.069x + 0.425 - 0.013 = 0
3.910x² + 2.677x + 0.412 = 0
Solving using the quadratic formula:
a = 3.910, b = 2.677, c = 0.412
x = [tex]\frac{-2.677\±\sqrt{2.677^2 - 4*3.910*0.412}}{2*3.910}[/tex]
x = -0.256 or -0.431
The negative sign indicates that equilibrium is to the left of the reaction
Since x cannot be greater than 0.384, x = -0.256.
Equilibrium concentration of HOCl = 0.652 + 2(-0.256)
Equilibrium concentration of HOCl at 25°C is 0.140 M
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If I place an egg in orange soda will it gain mass or lose mass?
Answer:
The soda or the egg?
Explanation:
The soda will gain but the egg will lose it may take a while though
Answer:
Gains Weight UwU
Explanation:
Ionic bond occurs between two atoms that have different:
a) Electron
b)Size
c)Polarity
d)Energy
e)Charge
Answer:
Ionic bond occurs between two atoms that have different:
a) Electron
Explanation:
according to the definition of ionic bond,
it is the electrostatic force of attraction that holds the two oppositely charged ions together and an ionic bond or electrovalent bond is formed when one atom gains electrons while the other atom loses electrons from its outermost level or orbit.
iDENTIFY THE NAME OF THE ELEMENTS OF THE ATOMS ABOVE
Answer:
oxygen carbon hydrogen nitrogen
Explanation:
identified by the number of protons in its atoms
What is the function of the nervous system? What is the basic unit of the nervous system?
#Nova
Answer:
The basic unit of the nervous system is a nerve cell or neuron. The nervous system transmits signals between the brain and the rest of the body, this way, the nervous system's activity controls the ability to move, breathe, see, and think.
Explanation:
Have a great rest of your day
#TheWizzer
Draw the Lewis Structure for C2F4. b. Total RED's c. Nonbonding RED's d. Electron-Pair Geometry e. Molecular Shape f. Is it Polar, Nonpolar or Ionic
The molecule C2F4 has a trigonal planar molecular and electron pair geometry.
The shape of a molecule is dependent on the number of electron pairs that surround the central atom in the molecule. In the molecule C2F4, there are two central carbon atoms.
Each of the central carbon atoms have a trigonal planar molecular and electron pair geometry. C2F4 is a symmetrical molecule so it is nonpolar and has a zero dipole moment.
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given the reaction 4Na(s) +O2 -> 2Na2O How many grams of Na2O can form from 3.0g of Na? use these molecular weight Na=23g/mole and O = 16g / mole
can some vitamins be considered water-soluble and others fat soluble?
Answer:
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). This difference between the two groups is very important. It determines how each vitamin acts within the body.
According to Hebrews 11, what did Abraham believe God would do if Isaac was slain as a sacrifice?
Answer:
He thought he was going to bring Isaac back from the dead. They ended up sacrificing the donkey instead.
What equipment is generally used to make lyophilized medications suitable for administering to the patient? a) Test tubes or sterile ampules b) Petri dishes and sterile droppers c) Sterile syringes or graduated cylinders d) Measuring cups and clean, warm water
The answer is (B) !
Explanation:
Petri dishes and sterile droppers is generally used to make lyophilized medications suitable for administering to the patient.
According to Hebrews 11, what did Abraham believe God would do if Isaac was slain as a sacrifice? Please help me I need it for tonight!
Answer:
Abraham thought that GOD would raise Issac back from the dead. It was a test and they would sacrifice the donkey instead.
I have experiment measuring sugar content with liquid what should can I say in future remarks I want three points please help
Answer:
Liquid sugar is the sugar you consume in liquid form from beverages like sugar sweetened soda. The sugar in beverages is often highly concentrated and easy to consume in large amounts without feeling full. Some examples of these drinks are fairly obvious, such as sodas and fruit punch.
Which statements prove the law of conservation of matter (select all that apply)
a) burning a piece of paper
b) sugar dissolving into water
c) cookie dough is baked into a cookie
d) water evaporating in the water cycle which is an open system
Answer:
It's all of the above.
Explanation:
I took the quiz.
Four drops of yellow food coloring are added to 10 mL of water. The mixture is pale yellow. Did a chemical change take place? Explain completely your evidence for your answer, using some of the scientific terms you have learned in this unit.
Answer:
Yes
Explanation:
Because first of all you used yellow food coloring second you added it third the mixute turned the color of yellow
In which case would recalibrating a thermometer be an important next step in an experiment dealing with boiling points?
A) The results of several trials are all very close to each other, but they are noticeably different from the accepted value for the boiling point.
B) A small number of trials are conducted, with results quite different from each other, and with an average that is noticeably different from the accepted value.
C) A single trial is conducted, and the result is very close to the accepted value of the boiling point.
D) The results of several trials vary by a large amount, but the average is close to the accepted value for the boiling point.
I believe the answer would be D
Covalent compounds are generally not very hard. Justify the statement.
Covalent compounds are generally not very hard because they are formed by two or more nonmetallic atoms.
COVALENT COMPOUNDS:Covalent compounds are compounds whose constituent elements are joined together by covalent bonds.
Covalent bonding occurs when two or more nonmetallic atoms of an element share valence electrons. This means that covalent compounds will not be physically hard since they constitute non-metals.
Examples of covalent compounds are:
H2 - hydrogenH2O - waterHCl - hydrogen chlorideCH4 - methaneLearn more about covalent compounds at: https://brainly.com/question/21505413
Name three sources of atmospheric carbon dioxide.
Why is the same type of nail used in all test tubes? in every experiment done to show how rusting works and in what conditions.
in test tube 1 iron nail gets both air and moisture which is required for rusting. ... in the test tube 3 iron nail is not rusted because of the calcium chloride which is moisture absorber. hence nail would not get moisture for the rusting.
An element's atomic number represents
the number of protons found in that element
the number of protons and electrons found in that element
the number of protons and neutrons found in that element
the number of electrons found in that element
the second options
the number of protons and electrons found in that element
Gaseous chlorine dioxide (ClO2) is used in bleaching flour and municipal water treatment in
500.0L containers. If these processes are performed at room temperature (22.0°C) using 52.1
moles of gas, what is the pressure? Must show calculation setup.
Taking into account the ideal gas law, the pressure is 2.52 atm.
An ideal gas is a theoretical gas that is considered to be composed of randomly moving point particles that do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.
The pressure, P, the temperature, T, and the volume, V, of an ideal gas are related by a simple formula called the ideal gas law. This equation relates the three variables if the amount of substance, number of moles n, remains constant. The universal constant of ideal gases R has the same value for all gaseous substances. The numerical value of R will depend on the units in which the other properties are worked.
P×V = n×R×T
In this case, you know:
P=?V= 500 Ln= 52.1 molesR= 0.082[tex]\frac{atmL}{molK}[/tex]T= 22 C= 295 K (being 0 C=273 K)Replacing in the ideal gas law:
P×500 L = 52.1 moles ×0.082 [tex]\frac{atmL}{molK}[/tex] ×295 K
Solving:
P= (52.1 moles ×0.082 [tex]\frac{atmL}{molK}[/tex] ×295 K)÷ 500 L
P= 2.52 atm
Finally, the pressure is 2.52 atm.
Learn more about ideal gas law:
https://brainly.com/question/4147359?referrer=searchResultsI need help with this question.
The London forces designated as A are much weaker than the dipole- dipole interaction designated as B.
The intermolecular forces are interactions that exists between molecules of a substance in a particular state of matter. The nature of intermolecular forces in a substance greatly affect the properties of the substance.
We can see that A represents weak London forces while B represents dipole - dipole interactions. The London forces are very much weaker than the dipole - dipole interactions.
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The person who answerers this will get 100 points pls answer all the question's
Answer:
I think that is the literal answer
Need help ASAP!!!!!!
Answer:
option D 17proton ,17electron and 18 neutrons
explain how materials are suited for different uses based on their physical and chemical properties?
Y’all what’s this I don’t feel like doing it and I’ll give brainlist too
Answer:
2.Closed System: A closed system is a thermodynamic system where energy can be exchanged with its surrounding but not matter. Open System: Open systems can exchange matter with the surrounding. Closed System: Closed systems cannot exchange matter with the surrounding. Open System: The mass of the system will vary with time in open systems.
Explanation:
1.The particle model is the name for the diagrams used to draw solids, liquids and gases. In the model, the particles are shown as circles or spheres. However, the particles in ice, liquid water and steam look the same because they are all water, but in different states of matter. Why do we use the particle model in science?
3.An open system can be defined as a system which can exchange both matter and energy with the surrounding. For example, the earth can be recognized as an open system. In this case, the earth is the system, and space is the surrounding. Sunlight can reach the earth surface and we can send rockets to space.