Answer:
0.1
Explanation:
Diamond has a hardness of 10 and chalk a harness of 1. Explain what this means.
Answer:
they have different forces holding the atoms together
Explanation:
diamond has a strong convalent bond holding the particles together while chalk has weak van der waals forces holding the particles together hence the diffrence in hardness
What is the molarity of a solution with 2 moles of HCl in 2000 mL?
Answer:
"1 M" will be the right solution.
Explanation:
The given values are:
Number of moles,
= 2 moles
Volume of solution,
= 2000 mL
or,
= 2 L
Now,
The molarity of the solution will be:
= [tex]\frac{Moles}{Liters}[/tex]
On substituting the values, we get
= [tex]\frac{2}{2}[/tex]
= [tex]1 \ M[/tex]
Antimony sulfide+hydrogen chloride—>
Answer:
Sb2S3 + 6HCl ⇆ 2SbCl3 + 3H2S
Explanation:
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Can someone please write this in y’all’s own words please and I’ll give you branly
Answer: we can make our own water and not take any water from animal.
Explanation:
How long does it take for fruit flies to develop from embryos to adults?
Consider the diagram above. If you placed a rubber duck on the
surface of the water in the middle of the pot, in which direction
would you expect the duck to move?
Answer:
But there is nothing above
In nuclear fission reactions, what causes the atom's nucleus to become
unstable
Answer:
the forces i think
Explanation:
The absorption of a free moving neutron by the atoms nucleus
(A P E X)
What term describes the temperature at which a substance can change state from a liquid to a gas?
A. Boiling point
B. Melting point
C. Freezing point
D. Specific heat
Option A. Boiling point.
Explanation:
When you heat the water, the water gets converts into gaseous form.
As you know that water is in liquid form. So, when you heat the water, the water molecules absorbs the heat and get dispersed from one another molecules. i.e., molecules go far from the other molecules as they absorbed heat.
The term describes the temperature at which a substance can change state from a liquid to a gas, is boiling point. Therefore, option A is correct.
What is boiling point ?The temperature at which a liquid's vapor pressure equals the pressure around it and the liquid transforms into a vapor is known as the boiling point of a substance. A liquid's boiling point varies depending on the atmospheric pressure in the area.
Boiling point and saturation temperature are synonyms. Sometimes the measurement's pressure serves as a definition for the boiling point. The International Union of Pure and Applied Chemistry was founded in 1982.
The boiling point of a sample can be calculated using a number of techniques, such as distillation, reflux, and a Thiele tube. The simplest approach makes use of a Thiele tube and has the benefit of requiring less than 0.5mL of substance.
Thus, option A is correct.
To learn more about boiling point, follow the link;
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electronics configuration
Answer:
Electronic configurations describe each electron as moving independently in an orbital, in an average field created by all other orbitals.
Explanation:
a bottle with a volume of 694 L contains how many moles of O2 gas at STP
Answer:
Solution given:
22.4 liter of O2=1 mole of O2
694litre of O2=[tex] \frac{1}{22.4} \times 694[/tex]
=30.98or 31 mole of O2
Choose the mixed number that is equivalent to $ 5.08.
5 8/100
5 80/100
80/100
8/100
Answer:
a. 5 8/100 is equivalent to $ 5.08.
Explanation:
i hope this helps :)
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Answer:
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LOOK im girl and i like this girl and I KNOW " she is gay" NO IM PAN so ya but do i ask out this girl?
Answer:
Do it if you feel like its your chance! Good luck!
Explanation:
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Answer:
no pics sorry. v vc. gkfgildhrmsykesetksyekuxrux
find the average speed of a person who swims 105 m in 70 s
Answer:
v = 1.5 m/s
Explanation:
Given that,
Distance covered by a person, d = 105 m
Time taken, t = 70 s
We need to find the average speed of the person. We know that the average speed is given by :
[tex]v=\dfrac{d}{t}\\\\v=\dfrac{105\ m}{70\ s}\\\\v=1.5\ m/s[/tex]
So, the average speed of the person is equal to 1.5 m/s.
Write the balanced nuclear equation.
263
1.
Sg
254 Rf + A He
106
104
4
2.
211
At
83
He
2
3.
248
96
Cm + He
4
-
235
U
92
+
He
4.
2
Answer:
pag pinag balik tad moyan tama magiging tama sagot nya promise jslsh
Which of the chemicals in the following chemical reaction is the acid?
HCO3- + H20 -->CO3^2- +H30+
A.) HCO3-
B.) co3²-
C.) H30+
D.) H20
A) HCO3- , carbonic acic
I need help with the stuff highlighted in the blue
Answer:
CO2 + H2O = C6H12O6 + O2
or
6CO2 + 6H2O = C6H12O6 + 6O2 if it need to be balanced
Answer:
Answer is 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2
Explanation:
Consider the following balanced equation:
3 H2 + N2 --> 2 NH3
What volume of hydrogen gas will react in a perfect ratio
with 3 liters of nitrogen gas?
Answer:
[tex]from \: avogadros \: hypothesis \\ 1 \: mole \: of \: nitrogen \: reacts \: with \: 3 \: moles \: of \: hydrogen \\ 3 \: litres \: of \: nitrogen \: react \: with \: ( \frac{3 \times 3}{1} ) \\ 9 \: litres \: of \: hydrogen[/tex]
Gas is confined in a metal tank in the figure. At 20.20°C, the gas exerts a pressure of 8.532 atm.
After heating the tank, the pressure of the gas increases to 10.406 atm. What is the temperature of
the heated gas?
Answer:
The temperature of the heated gas is 357.6 K (or 84.6 C)
Explanation:
Gay Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
In short, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.
So, this law indicates that the quotient between pressure and temperature is constant:
[tex]\frac{P}{T} =k[/tex]
You want to study two different states, an initial state 1 and a final state 2. Then it is true:
[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]
In this case:
P1= 8.532 atmT1= 20.20 C= 293.2 K (being 0 C= 273 K)P2= 10.406 atmT2= ?Replacing:
[tex]\frac{8.532 atm}{293.2 K} =\frac{10.406 atm}{T2}[/tex]
Solving:
[tex]T2*\frac{8.532 atm}{293.2 K} =10.406 atm[/tex]
[tex]T2=10.406 atm*\frac{293.2 K}{8.532 atm}[/tex]
T2= 357.6 K
The temperature of the heated gas is 357.6 K (or 84.6 C)
The new temperature of the heated gas when the pressure increase to 10.406 atm is 84.60 °C
Data obtained from the question Initial temperature (T₁) = 20.20°C = 20.20 + 273 = 293.20 KInitial pressure (P₁) = 8.532 atm Volume = constant New pressure (P₂) = 10.406 atmNew temperature (T₂) =? How to determine the new temperatureThe new temperature of the gas can be obtained by using the combined gas equation as illustrated below:
P₁V₁ / T₁ = P₂V₂ / T₂
Since the volume is constant, we have:
P₁ / T₁ = P₂ / T₂
8.532 / 293.20 = 10.406 / T₂
Cross multiply
8.532 × T₂ = 293.20 × 10.406
Divide both side by 8.532
T₂ = (293.20 × 10.406) / 8.532
T₂ = 357.6 K
Subtract 273 from 357.6 K to express in degree celsius
T₂ = 357.6 – 273
T₂ = 84.60 °C
Learn more about gas laws:
https://brainly.com/question/6844441
At what temperature does a gas at 1.00 atm and 20 degree Celsius have a pressure of 4.00 atm.
Please help thanks.
Answer:
P1 =4 atm
T1= 20°C
P2=1 atm
T2=?
According to Gay-Lussac's Law or Third Gas Law,
P1T2=P2T1
4×T2=1×20
T2= 20/4
T2= 5°C
Answer At 5°C temperature does a gas at 1.00 atm !
Identify the gas law that applies to the following scenario: A 36.5 liter balloon holding 2.9 moles of carbon dioxide leaks. If we are able to determine that 1.2
moles of carbon dioxide escaped before the container could be sealed, what is the new volume of the container?
O Boyle's Law
O Charles' Law
O Gay-Lussac's Law
Avogadro's Law
Answer:
Avogadro's Law; 15.1L
Explanation:
Boyle's Law- Pressure and volume are inversely related, so an increase in pressure= decrease in volume. We see this in the equation P1V1=P2V2.
Charle's Law- Gas expands/increases in volume when temperature increases, so they are proportional. We see this in the formula [tex]\frac{V1}{T1} = \frac{V2}{T2}[/tex].
Guy-Lussac's Law- As temperature increases, pressure increases, so they are proportional. We see this in the formula [tex]\frac{P1}{T1} = \frac{P2}{T2}[/tex].
Avogadro's Law- There are equal amount of volume have an equal amount of moles, so they are proportional. We see this in the formula [tex]\frac{V1}{n1} = \frac{V2}{n2}[/tex].
Plugging in the values based on Avogadro's Law, we'll have:
[tex]\frac{36.5}{2.9} = \frac{V2}{1.2}[/tex]
12.6 = [tex]\frac{V2}{1.2}[/tex]
12.6 x 1.2 = V2
15.1L =V2
The function of the cell wall is to
A.make a organism rigid
B.provide internal support for an animal
C.control substances going in and out of organisms
D.make a plant cell rigid
Answer:
D.make a plant cell rigid
Explanation:
Cell wall is present only in a plant cell. Option A, B & C are functions of the cell membrane not the cell wall.
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D.make a plant cell rigid
thanks hope it helps.Which might cause someone to be exempt from soccer practice? *
a. an injury
b. a previous absence
Answer:
injury
Explanation:
because get hurt we can say injury
thermal conductors what
What is the relationship of tissues to cells?
Tissues make cells.
Cells make up tissues.
Tissues are use for cell growth.
Cells help tissue grow.
On a certain map, every 1 cm represents 10 km on Earth's surface. Which
ratio represents the scale of the map, which shows how the map
measurements compare to actual ones on Earth's surface?
A. 1:1,000,000
B. 1:1,000
C. 1,000,000:1
D. 1:10
A gas occupies 450. mL 3 atm. If its volume decreases to 0.200 L then what will its new pressure be?
Assume constant temperature and mass.
Show your work.
Answer:
6.75 sym.
Explanation:
Boyle's Law: The pressure of a gas in an enclosed container with a flexible volume is inversely proportional to the volume occupied by the gas.
Empirically => P ∝ 1/V => P = k(1/V) => k = P·V
For any conditions of Pressure & Volume, Pressure x Volume is a constant.
Therefore, k₁ = k₂ => P₁V₁ = P₂V₂ => V₂ = P₁V₁ / V₂
=> V₂ = (3atm)(0.450L)/(0.200L) = 6.75 atm.
Faster-moving water can carry a greater load.
true or false
Answer:
That is false
Explanation:
Just because it moves faster doesn't mean that it can carry and bigger load.
Answer:
False
Explanation:
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