Answer:
There is no attachment
however, u could remove the object
Answer:
The pressure of an object, is made off of atoms, and the hotter they are, the quicker they'll go. Meaning they're under pressure, and the atoms begin to start to melt, and as it'll go the object will start catching on fire. The way how an object and atom are out of pressure is to be cooled, the cooling of an atom freezes the atom, which'll mean they wont move or do anything matter of fact. Thus, the cooling of atoms is how you take an object/atom out of pressure.
Hope this helps. :)
Which is the correct molar mass for the
compound aluminum carbonate, Al2(CO3)3?
Answer:
molar mass for the
compound aluminum carbonate, Al2(CO3)3
233.99 g/mol
A plot of the Maxwell distribution of velocities for a number of different gases measured at the same temperature shows that
Answer:
as molecular mass increases, more molecules have speeds close to their average speed.
Explanation:
A plot of the Maxwell distribution of velocities for several different gases measured at the same temperature shows that "as molecular mass increases, more molecules have speeds close to their average speed."
This is evident in the fact that the Maxwell distribution of speeds for a given selection of gas at a given temperature shows certain traits if one of the main variables is changed, such as
1. Mass: The proportion of speeds for a given selection of gas is narrower and the average speed is lower for gas of higher molecular weight.
2. Temperature: The proportion of speeds for a given selection of gas is wider and the average speed is higher as the temperature of a gas increases.
a 70 g sample of cesium is sealed in a glass vial and lowered into 250 mL of water at 90 C. when the cesium melted the temperature of the water dropped to 88.98 C
Answer: 70.0 g = .53 mol
Q = 250g (+ 1.02) 4.18
Q = 1065. 9 J / 1000 = 1.0659 kJ
1.0659/ .53 = 2.01 kJ/ mol
Answer: 2.01 kJ/ mol
Explanation:
Heat can be transferred from the hotter water to metal causing the metal to melt.
What is heat transfer?The question is incomplete but I will try to give you a general overview. Now, we know that heat can be transferred from one body to another.
Hence, heat can be transferred from the hotter water to metal causing the metal to melt. When the metal melts, the system will now attain an equilibrium temperature.
Learn more about heat transfer: https://brainly.com/question/9904853
4NO + 3O2 + 2H2O = 2.4 moles of NO 2.4 moles of O2 and 2.4 moles of H2O react and 2.0 moles of HNO3 are recovered from the reaction. what is the percent yield of this reaction ?
Answer:
83%
Explanation:
Percent yield is 100 times the ratio between actual yield (2.0moles HNO₃) and theoretical yield. To find theoretical yield:
As you can see in the reaction:
4NO + 3O₂ + 2H₂O → 4HNO₃
4 moles of NO are required when 3 moles of O₂ and 2 moles of H₂O reacts. As equal moles of each reactant are added, the limiting reactant is NO because is the substance that requires more moles to react.
2.4 mol NO produce 2.4 mol HNO₃-Because 4 moles of NO produce 4 moles of HNO₃. That means theoretical yield is 2.4 moles and percent yield is:
2.0 moles / 2.4 moles * 100 = 83%
What is the chemical equation of a covalent bond
Answer:
In my knowledge of chemistry, I believe there isn't chemical equation for covalent bond. There is only covalent formula
Explanation:
How many moles of O2will be produced from 6.2 moles of water?
Answer:
I hope This will help you....and please mark me as Brilliant
Explanation:
The formula, H2O tels us that there are the same number of moles of Oxygen as there are of water. The (understood )molecular coefficient of H2O is 1. The (understood ) coefficient of O in the formula is also 1. The number of moles of oxygen is the same as the number of moles of water. This is moles of oxygen atoms. If the question wants moles of oxygen gas, O2, then it will be half as many I think that is what they want, so I would answer 3.1 moles of O2.
Devices that allow you to do work in an easier way.
Answer:
The most notable of these are known as the "six simple machines": the wheel and axle, the lever, the inclined plane, the pulley, the screw, and the wedge, although the latter three are actually just extensions or combinations of the first three.
Answer:
The most important devices that made work easier are:
The wheel
The axle
The lever
The inclined plane
The pulley
The screw
The wedge
these are known as the the "six simple machines"
What is one advantage that proteins derived from beans have over proteins derived from red meats
Answer: B. Proteins derived from beans have less saturated fat than proteins derived from red meats.
2 moles Fe= how many Fe atoms
What element is represented in this model if the atomic number is 3?
A.
lithium
B.
carbon
C.
nitrogen
D.
neon
Answer:
The answer is lithium
Answer:
A. Lithium
Explanation:
3. An energy pyramid is shown.
Red-
The energy lost at each level is consumed by organisms in
the top level.
tailed hawks
Mexican free-tailed bats
Energy is transferred from organisms in one level to those
in the level above.
Water boatmen
Energy is transferred down each level of the energy
pyramid
Algae
Which sentence best describes how energy flows through this pyramid?
The organisms at the bottom level provide energy directly
to organisms in all the other levels.
Answer: it’s c
Explanation:
Help plsssssss... 3C(s) + 2Fe2O3 (5) ► Fe
(s)
+ 3CO2 (g)
What type of chemical reactions is the chemical reaction described above?
Answer:
single displacement
Explanation:
the Fe was switched out with the C. they are the only ones that switched, making it a single displacement
Answer:
Single displacement.
Explanation:
This is because Iron (Fe) was "switched" with C and this being the only "switch" in the equation makes it a single displacement.
Ice cream
Air, Cone:
Heat is :
the system
The kinetic energy is
The potential energy is
:: Surroundings
:: System
.: Entering
:: Exiting
.: Increasing
:: Decreasing
Answer:
icecream-decreasing
air,cone-surounding
heat is -entering-the system
the potential energy-increasing
which of the following acts as a catalyst in catalytic converters?
A. Wood
B. Metal
C. Water
D. Gas
Answer: B. Metal
Explanation: The catalyst used in the converter is mostly a precious metal such as platinum, palladium and rhodium Hope This Helped (=^･-･^=)
If using a microscope allows you to see substances in a mixture, that mixture is _____
Answer:
That means that mixture is HeteroGeneous.
Explanation:
Hope this Helps!
How many kinds of horses are there in the world? Give me a real number, plz its for a magazine article!
Answer:
784
Explanation:
Answer:
784 horse breeds
What is the new volume if a piston starts at 25ml and 900 mm Hg and the pressure decreases to 750 mm Hg?
What is the starting pressure if an inner tube starts at 40L and then the volume decreases to 30L after the pressure is increased to 20 psi
What is the starting temperature if a balloon increases from 50ml to 70ml and the final temperature was 350K?
If a bubble cools from 300K to 200K and the final volume is 18ml, what volume did it start at?
Answer:
I screenshot and expained here
https://screenshot.best/A7QIKV.lnk
Explanation:
Which of the following substances is a base?
5 points
a. Vinegar
b. Ammonia
c. Lemon juice
d. Distilled water
Answer:
D
Explanation:
water is used to delude just about anything
Consider the atomic model of the element chlorine. Which elements will bond ionically with chlorine such that the formula would
be written as XCL2?
-0
A)Hydrogen
B)Magnesium
C)Oxygen and Sulfur
D)Lithium and Sodium
E)Barium and Calcium
Answer:
it is magnesium and barium and calcium
Magnesium, Barium, and Calcium will bond ionically with chlorine such that the formula would be written as MgCl₂, BaCl₂, and CaCl₂.
What are ionic compounds?Ionic compounds can be explained as crystalline solids which are formed by packing of opposite charge ions due to the interactions of the ions. An Ionic compound is produced when metal reacts with non-metal.
In ionic compounds, oppositely charged ions are held by ionic bonds due to the interactions between ions. The ions are formed from atoms by gaining or losing electrons in order to attain their noble gas configuration.
A cation in ionic compounds is the electropositive ion and has the tendency to give away valence electrons. Similarly, anions in ionic compounds are electronegative ions and have a tendency to gain electrons.
The chlorine needs one electron to complete its valence shell. Therefore two chlorine will combine with a divalent cation. Therefore Magnesium, Barium, and Calcium exist as Mg⁺², Ba²⁺ , and Ca²⁺.
Learn more about ionic compounds, here:
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Help me out please an thank you
What do waves carry from place to place?
A Energy, but not matter
B Energy and matter
C Matter, but not energy
D
Nelther energy nor matter
In context to the question after evaluating every possible fact we conclude that waves carry energy and never carry matter, towards a dignified place to another.
This is considered true concerning all types of waves involving the sound waves, water waves, light waves, radio waves, microwaves, and x-rays. Then the correct answer for the required question is Option A.
Furthermore, there are different and distinguished types of waves. For instance
Mechanical waves: These comprises of waves that require a medium to complete the given course. Instances involve sound waves and water waves.Electromagnetic waves: These consist of wave’s generally don’t require a medium to complete a course . Instances include radio waves, microwaves, and light waves.Matter waves: These involve waves that are associated with particles such as electrons and atoms.To learn more about mechanical waves
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HELP THIS IS FOR CHEM!! If the pull force is 898N and the friction force is 335N what is the net force?
Answer:
Explanation:
WILL GIVE THANKS,STARTS AND BRANLIEST!!!!! PLEASE COME LOOK! SHARE YOUR SMARTNESS!!!! PLSSSSS AT LEAST COME TAKE A LOOK! ANSWER IF 100% SURE.
4. What is the amount of valence electrons in an atom equivalent to?
A) The amount of protons an atom has
B) The group the atom is located
C) The period the atom is located
D) The amount of electrons an atom has
6. How many sodium (Na) and oxygen (O) atoms are needed to form the ionic compound sodium oxide?
A) There needs to be 1 Na atom and 2 O atoms to form Na2O
B) There needs to be 1 Na atom and 1 O atom to form Na2O
C) There needs to be 2 Na atoms and 1O atom to form Na2O
D) There needs to be 2 Na atoms and 2O atoms to form Na2O
Answer:
4. A
5. I don't see the correct answer, but 2 sodium and one oxygen.
Explanation:
4., Because the amount of electrons needs to be equal to the number of protons to balance out charges.
5. You can find it on the web.
How do you study things you cannot see
Answer:
For things that we can not directly observe, we can use indirect observation – which studies the consequences of an action or process. For example, we cannot see the Earth's magnetic field, but we detect it by its effect on a compass.
?what are the uses of gamma, alpha and beta particles in medicine, military and industry?
do you think using gamma rays in medicine is harmful or helpful in medicine?
Answer:
See explanation
Explanation:
Gamma, alpha and beta particles are used in medicine for the treatment of various kinds of cancers and tumors. In addition gamma rays are used for sterilization in medicine as well as in medical diagnosis.
Alpha particles are used to eliminate static electricity in industry. Beta particles are used in industry as tracers and for monitoring the thickness of materials. Gamma rays are very useful in industry for non destructive testing of products.
In military, alpha and beta particles are used for remote sensing. Gamma rays are useful for nuclear warfare.
Although gamma rays are able to penetrate the human body and cause a lot of damage to tissue and DNA, they are equally able to kill malignant cells in the body. This has been harnessed in radiotherapy for cancer treatment. Gamma rays are indeed dangerous to the human body if they are not delivered carefully and purposefully.
In conclusion, gamma rays are both helpful and harmful when used in medicine. They are helpful when delivered carefully with a specific purpose in mind and harmful when they are not delivered carefully.
During a chemical reaction, substances (called reactants) are combined to form new substances (called products). Which of the following accurately describes the reactants and the products of a chemical reaction? The products contain a different number of atoms than the reactants but have the same properties The number of atoms and the properties are the same in the reactants and the products The products contain the same number of atoms as the reactants but have different properties The number of atoms and properties are different int he reactants and the products
The number of atoms and properties are different int he reactants and the products.
Darwin proposed the “theory of evolution by natural selection” in which he stated that certain members of species have adaptations to help them _____ while other members who don’t have the helpful adaptation die out.
PLS HELP ME! WHAT DOES IN THE MISSING BOX??!
ILL GIVE U 5 STARS JUST HELPPP
Answer:
survive
.............
Instructions:
Balance chemical equations on bach side by multiplying the molecular or ionic compounds by a
coefficient.
_C3_H8
+
O2
CO2
H2O
Answer: the answer is b
Explanation:
Answer:
Explanation:
B answer
How are air temperature and humidity related? Colder air can hold more water vapor than warmer air. Warmer air and colder air can hold the same amount of water vapor. Warmer air can move faster than colder air. Warmer air can hold more water vapor than colder air.
Answer:
Warmer air can hold more water vapor than colder air.
Explanation:
Weather can be defined as the atmospheric conditions of a particular area over a short period of time.
The elements of weather include precipitation, wind, temperature, atmospheric pressure, relative humidity, cloud, and wind speed.
Temperature can be defined as a measure of the degree of coldness or hotness of a physical object (body).
On the other hand, humidity refers to the concentration (amount) of water vapor that is present in the air. It is high when there's a lot of water vapor in the air and low when the level of water vapor is small.
The relationship between air temperature and humidity is that warmer air can hold more water vapor than colder air because as the air cools, its molecules move closer together while the molecules move farther apart as the air become hot.
Additionally, at constant humidity, relative humidity is inversely proportional to temperature i.e as the temperature decreases, relative humidity increases.
if a:b =2:3and b:c=6:10,find a:c.
Answer:
4:10
Explanation:
a:b
2:3
6:10
b:c
The common ratio is b
The lcm of 3 and 6 is 6.
Multiply the first ratio by 2 and the second one by 1
a:b:c
4:6:10
hence a:c = 4:10