Answer:
because water wets stuff expect for fire.
Answer:
The meaning of wet is covered or saturated with water or another liquid, showing that is a glass is covered in water it is considered wet.
Explanation:
Help please!!! I'll name you brainliest!!
Answer: pls mark brainliest
Explanation: i think so its D
How many molecules of As4010 are in 6.2 mol of As4010?
Soil has a specific heat capacity of 1.700J/g C. During the day, the temperature of soil in a
flowerpot increased from 15.6°C to 35.5°C. If the energy from the sun was calculated to be 251 175J,
what was the mass of the soil? Show your work.
Answer:
m = 7.42 kg
Explanation:
Given that,
The specific heat of the soil, c = 1.700J/g C
The temperature of soil in a flowerpot increased from 15.6°C to 35.5°C.
The energy released from the Sun is 251175 J. We need to find the mass of the soil.
We know that,
[tex]Q=mc\Delta T\\\\or\\\\m=\dfrac{Q}{c\Delta T}\\\\m=\dfrac{251175}{1.7\times (35.5-15.6)}\\\\m=7424.62\ g[/tex]
or
m = 7.42 kg
So, the mass of the soil is equal to 7.42 kg.
A compound is composed of 53.33%carbon, 11.11%hydrogen and 35.56%oxygen. If the molecular mass of the compound is 90, what is the molecular formula of this compound?
In H20 does the 2 apply to
Hydrogen, Oxygen, or Both?
Answer:
The difference is due to the fact that one water molecule has two hydrogen atoms to one oxygen atom, as explained above. This means it takes two water molecules (2 H2O) to make one oxygen molecule (O2)
Explanation:
Answer:
In H20 does the 2 apply to Hydrogen
Explanation:
In H₂O there is two atoms of hydrogen and 1 atom of Oxygen
Hence, In H20 does the 2 apply to Hydrogen
-TheUnknownScientist
A student transfers a gas at STP from a 11.0 L tank to a 25.0 L tank. If the pressure
remains constant, what is the new temperature?
. Consider a sample of oxygen gas at 27° C with a volume of 9.55L at a pressure
Answer:620 k
Explanation:
Need Help!!
Explain the relationship between volume and temperature (Charles’ Law)
Answer:
the volume of a give gas simple is directly propotional assolute temperature at constant pressure .the volume of a gavi. amount of gass is inversely propotional ot Its pressure when temperature is help constant
what is einsteins theory of relativity?
Answer:
The laws of the universe are for all observers, and it was shown that the velocity of light in spacetime will be the same regardless of the subject's speed.
Explanation:
The principle outlines how things behave in time and space, so it could be used to model anything from black hole life to light shifting due to the gravitational, as well as the action of the terrestrial Planets in its orbit. Einstein's most popular hypothesis has far-reaching ramifications.
How many grams in 4.5 moles of H2O?
the are 18.01528 grams
.....
what is the number of moles in 60g of NaCI?
Answer:
58.44277 I hope this works best of luck for you
4.What type of energy is used to fuel the process of photosynthesis and what type is produced in
respiration?
A Light energy is used in photosynthesis and created by respiration.
B ATP is used in photosynthesis, which allows the plant to undergo respiration.
C Light energy is used in photosynthesis, whereas respiration creates the energetic product, ATP.
D Food energy is used in photosynthesis and ATP is produced in respiration.
Answer:
A. light energy is used in photosynthesis and created by respiration
Anatom of an element has no electron,will that atom have any mass or not? Can antom exist
without electron? if so give an example.
Answer:
Generally, all atoms of elements contain three sub-atomic particles- Protons(Positively-charged), Neutrons(Neutral) and Electrons(Negatively-charged).
The Magnitude of the Positive Charge possessed by the Protons and the Magnitude of the Negative Charge possessed by the Electrons cancel each other, which make the atom electrically neutral.
Hence,
Without any electrons, the magnitude of the positive and negative charges wouldn't balance, and the atom would be unstable and disintegrate almost immediately. Hence, all stable atoms should have electrons revolving around them, where the number of protons and electrons are the same, under normal conditions.
To Conclude,
Every atom of an element will have electrons arranged in different shells, or matter couldn't exist without electrons.
How can I express the composition of a solution?
Answer:
It can be expressed in several ways: molarity (moles of solute per liter of solution); mole fraction, the ratio of the number of moles of solute to the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams ...
Explanation:
It can be expressed in several ways: molarity (moles of solute per liter of solution); mole fraction, the ratio of the number of moles of solute to the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams ...
What is the area of ∆XYZ?
Answer:
is there an attachment to this question? i can help if u insert one :)
Explanation:
(●'◡'●)
How many grams in 4.50 moles of NaNO3?
Answer:
382.5 grams
Explanation:
Find the molar mass of NaNO₃ and then multiply the number of moles by that molar mass :)
The graph shows a heating curve for water.
Which point on the graph indicates that all of the liquid water has been converted to water vapor?
1
2
3
4
Answer:
4
Explanation:
water starts to boil into water vapor at 100'C. at this point, temperature becomes costant at 100'C as heat energy is used up by the particles to overcome the intermolecular forces between the molecules.
once the forces holding the particles together have been overcome, the temperature will start to rise again showing that all the liquid water has been converted into water vapor
Which of the following relationships can be measured in light years?
the length of time it takes light to reflect from a plane mirror
the amount of light absorbed by the Earth
the index of refraction of a mirage
the distance between stars and galaxies
All of the choices are correct.
Pls help really need it pls
How many grams is 2.40 x 1023 molecules of N,O,? (5 pts)
PLS HELP ASAP
Answer:
30.26 grams of N₂O₃
Explanation:
Divide by Avogadro's number. This leaves you with the number of moles. Then, multiply by the molar mass of N₂O₃
The amount of energy transferred per unit time by an electrical appliance is measured in what? Give the
name not the symbol.
Answer:
The Watt
Explanation:
Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.
The amount of energy transferred per unit time is called power, and power is measured in Watt.
What is Watt?Watt is the unit of power. It is used to measure the transfer of power. This is named after James Watt.
When one joule of energy is transferred in one second, this is the power of the Watt.
Thus, the amount of energy transferred per unit time is called power, and power is measured in Watt.
Learn more about Watt
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Provide a set of step by step instructions to make 750 mL of 1.5 M calcium chloride solution.
Answer: PLease see answer in explanation column
Explanation:
FIRST STEP
We find the grams ( mass ) of solute required to prepare the solution by using the formula
grams ( mass ) of solute, g(CaCl2)= Molar mass x Molarity of the solution x Volume of the solution
Therefore Preparing 750 mL of 1.5 M calcium chloride solution, we have that Molar mass of Calcium chloride =110.98 g/mol
g(CaCl2) =110.98 g/mol X 1.5mol/L X 0.75L
g(CaCl2) =124.8525g CaCl2
SECOND STEP
Now Dissolve 124.8525g CaCl2 in about 350ml of distilled water then add more water until the final volume be comes 750ml
4. Ionic compounds conduct electricity when they are in the __ state
Answer:
Salts do not conduct electricity at the solid state since the ions are in a fixed position in the lattice. However, at the molten state or in solution, the ions are free and they can move within the liquid phase to serve as electrons shuttles and therefore, they become conductive.
Explanation:
4 Weathering Assessment
2 of 132 of 13 Items
Question
POSSIBLE POINTS: 5.88
On a hot summer day, you and your friend decide to make a drink by mixing ice cubes, water, sugar, and Kool-Aid mix. Which of the following statements best describes what type of change has occurred?
This is an example of chemical change because the sugar dissolved.
This is an example of chemical change because the sugar dissolved.
This is an example of a physical change because the sugar dissolved
This is an example of a physical change because the sugar dissolved
This is an example of a physical change because the ice cubes began to melt.
This is an example of a physical change because the ice cubes began to melt.
This is an example of a chemical change because the Kool-aid dissolved and turned the water red.
Answer:
This is an example of chemical change because the Kool aid dissolved and turned the water red
A chemical reaction is carried out in a closed container. the energy absorbed by the chemical reaction is 100 kj. What is the energy liberated from the air or the walls of the container?
A. 100 kJ
B. 50 kJ
C. 25 kJ
D. 75kJ
Answer:
Option A
Explanation:
The total heat absorbed during the chemical reaction is the total heat released by the surrounding.
Net change of heat is equal to zero
Hence, the energy liberated from the air or the walls of the containers would be equal to the energy absorbed by the chemical reactions is equal to 100 Kj
Thus, option A is correct
What occurs when solid A, at 50.0°C, is place in liquid B, at 80.0°C?
A Heat energy flows from A to B as the average kinetic energy of the particles in A decreases
B Heat energy flows from A to B as the average kinetic energy of the particles in A increases
CHeat energy flows from B to A as the average kinetic energy of the particles in B decreases
D Heat energy flows from B to A as the average kinetic energy of the particles in B increases
Identify the acid, base, and salt in the following reaction
HNO3 + KOH —> H2O + KNO3
Explanation:
acid ,HNO3
base,KOH
salt ,KNO3
Jennifer has a jar full of stones. For one year, Jennifer shakes the jar several times each day. The illustration below shows the changes that occurred after one year. What process does this illustration show?
Jennifer has a jar full of stones. For one year, Jennifer shakes the jar several times each day. The illustration below shows the changes that occurred after one year, and this shows that because of the fragmentation, this happens.
Initially, before a year, there were many rocks, but as she continuously shrank the box, that led to the fragmentation. Due to vibration for a long time, the larger rocks break into the smaller particles as a result of the amount of rocks converted into the small particles and sands. These smaller stone fragments may then accumulate at the bottom of the jar as a result of this there is a decrease in the overall number of stones in the jar.
Learn more about the rock fragments here
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How many milliliters of a 3.28 M copper (II) nitrate Cu(NO3)2
solution are needed to provide a total of 146.59 g of Cu(NO3)2?
Use 187.56 g/mol as the molar mass of solute. Solve your answer
to two decimal places.
Answer:
237.80mL
Explanation:
Molarity of a solution can be calculated using the formula;
Molarity = number of moles (n) ÷ volume (V)
However, we first need to calculate the number of moles of Cu(NO3)2 by using the formula:
moles = mass/molar mass
Molar mass of Cu(NO3)2 = 187.56 g/mol
moles = 146.59 ÷ 187.56
moles = 0.782moles
Molarity = n/V
3.28 = 0.78/V
V = 0.78/3.28
V = 0.2378L
In milliliters (mL), 0.24 litres = 0.24 × 1000
= 237.80mL
2NaCl ---> 2Na + Cl2
What are the atoms of the products
Answer: ...
Explanation:
Sodium, chlorine
Answer:
2Na = 2 Sodium [has 2 atoms]
Cl2 = Dichlorine (Chlorine) [has 2 atoms]
Is this what you wanted?? I'm not entirely sure if this is the answer you were looking for.
Where do we get our energy from ?
Answer:
energy
Explanation: