Answer:
60.9 Kelvin
Explanation: First, write out everything that you know. You are tring to find the temperature, so the temperature will be represented by x.
Pressure (P)= 4.5 atm
Volume (V)= 3L
Number of Moles (n)= ?
Gas Consant (R)= 0.0821, if the pressure is in atm, that means r is 0.0821
Temperature (T)= x
We don't have all the information we need to plug the values into the equation. We still need to know how many moles 55.0 grans of neon is.
Ne in Grams= 55
Atomic Mass of Ne= 20.1797
55/20.1797= 2.7
moles= 2.7
Now that we have all the information we need, plug everying into the equation. In case you don't know, the Ideal Gas Law Equation is PV= nRT.
(4.5)(3) = (2.7)(0.821)x
x= 60.9
Now you have your temperature! It is 60.9 in Kelvin.
What large city in Texas will have its third day of rain?
Answer:
houston, texas
Explanation:
i hope this helps :)
Find the midpoint of points A(-10,3) and B(-7,-4) graphically .
Answer: Here u go
Explanation:
How many cesium atoms are in 21.9 grams?
The temperature of a sample of water changes from 10°C to 20°C when the water absorbs 100 calories of heat. What is the mass of the sample?
Answer:
10 g
Explanation:
Right from the start, just by inspecting the values given, you can say that the answer will be
10 g
.
Now, here's what that is the case.
As you know, a substance's specific heat tells you how much heat is needed to increase the temperature of
1 g
of that substance by
1
∘
C
.
Water has a specific heat of approximately
4.18
J
g
∘
C
. This tells you that in order to increase the temperature of
1 g
of water by
1
∘
C
, you need to provide
4.18 J
of heat.
Now, how much heat would be required to increase the temperature of
1 g
of water by
10
∘
C
?
Well, you'd need
4.18 J
to increase it by
1
∘
C
, another
4.18 J
to increase it by another
1
∘
C
, and so on. This means that you'd need
4.18 J
×
10
=
41.8 J
to increase the temperature of
1 g
of water by
10
∘
C
.
Now look at the value given to you. If you need
41.8 J
to increase the temperature of
1 g
of water by
10
∘
C
, what mass of water would require
10
times as much heat to increase its temperature by
10
∘
C
?
1 g
×
10
=
10 g
And that's your answer.
Mathematically, you can calculate this by using the equation
q
=
m
⋅
c
⋅
Δ
T
, where
q
- heat absorbed/lost
m
- the mass of the sample
c
- the specific heat of the substance
Δ
T
- the change in temperature, defined as final temperature minus initial temperature
Plug in your values to get
418
J
=
m
⋅
4.18
J
g
∘
C
⋅
(
20
−
10
)
∘
C
m
=
418
4.18
⋅
10
=
10 g
Which is an example of a neutral mutation? 1. one that causes abnormal human skin cells to reproduce and divide rapidly, producing a movie 2. one that increases the size of a seed pod, allowing the seeds inside to be spread and eventually grow 3. one that results in smooth plant leaves, while not changing the function of the leaves 4. one that brightens the feathers of a bird, making it easier for other animals to see it.
Answer:
its C) one that results in smooth plant leaves, while not changing the function of the leaves
Explanation:
Answer:
Person above me is right!
Explanation: its C :)
Help me please
Chemical energy is a form of_______ energy
A. heat
B. kinetic
C. potential
D. electromagnetic
Answer:
potential
............
Answer:
Chemical energy is a form of potential energy.
what is a likely oxidation
state of Chlorine?
a)-1
b) 7
C) -7
d) +1
Answer: a) -1
Explanation:
Is krypton a stable element
Answer:it is a stable element
Explanation:because it has six stable isotopes
The gravitational attraction between two objects is determined by the mass of the two objects and the:
A. Distance between the objects
B. Weight of the objects
C. Diameter of the objects
D. Density of the objects
Answer:
A. Distance between the objects
Explanation:
The gravitational attraction between two objects is determined by the mass of the two objects and the distance between the two objects.
According to Newton's law of universal gravitation:
"the gravitational force of attraction between two bodies is directly proportional to the product of the their masses and inversely proportional to the square of the distance between them".
F = [tex]\frac{Gm_{1}m_{2} }{r^{2} }[/tex]
F is the gravitational attraction
G is the universal gravitation constant
m is the mass
r is the distance
We can see that the gravitational attraction depends on the mass of the bodies and the distance between them.
Determine the mass of 6.43 moles of Barium.
Answer:
883.01261 grams
Explanation:
Answer:
Moles = Mass ÷ Ar
Mass = Ar × Moles
Mass = 137.327 × 6.43
Mass = 883.01g
How many neutrons does protium have?
How many atoms of aluminum are in a molecule of magnesium aluminum oxide (Al2MgO4)?
Answer:
12
Explanation:
help plz this is part b to my last question
Answer:
% error Aluminum: 0.34%
% error Steel: 16.67%
% error Lead: 23.08%
Explanation: Given our observed values of specific heat, to find the % error, we must know the true values as well. % error can be defined as, % error = |observed value - true value | / true value.
Our given data to solve this problem is as follows:
Aluminum Specific Heat Observed Value: 0.9 (given), Aluminum Specific Heat True Value: 0.897 (research).
Steel Specific Heat Observed Value: 0.49 (given), Steel Specific Heat True Value: 0.42 (research).
Lead Specific Heat Observed Value: 0.16 (given), Lead Specific Heat True Value: 0.13 (research).
___________
Since we have all the information, just subtract the true value from the observed value, and divide by the true value.
Aluminum Specific Heat % error:
observed value - true value / true value →
0.9 - 0.897 / 0.897 = 0.003 / 0.897 = 1/299 ≈ 0.34 %
Steel Specific Heat % error:
observed value - true value / true value →
0.49 - 0.42 / 0.42 = 0.07 / 0.42 = 1/6 ≈ 16.67%
Lead Specific Heat % error:
observed value - true value / true value →
0.16 - 0.13 / 0.13 = 0.03 / 0.13 = 3/13 ≈ 23.08%
Can someone please help me with a science question?????
Answer:
yes
Explanation:
How many grams of sulfuric acid contain 32 g of
oxygen atoms?
Answer:
One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms because each molecule of oxygen contains two oxygen atoms.
Explanation:
According to Maslow's hierarchy of needs, the basic needs are what we call physiological or biological needs. The survival of the individual relies on these basic needs. Looking at it this way, before you can meet any of the needs going up the hierarchy, one needs to be healthy or at least functional optimally to even get started. All other needs are considered secondary until the basic needs have been me
Answer:
True
Explanation:
|ndeed, Psychologist Abraham Maslow's sought to describe hierarchy in which the average (or most) humans place their needs. In other words, he believes we as humans have basic needs which we long to satisfy.
On the ranking or hierarchy, according to Maslow the need humans satisfy first is their physiological need. Here's the full hierarchy:
Physiological Needs
↓
Safety Needs
↓
Love/Belonging Needs
↓
Esteem Needs
↓
Self-Actualization
which of the data sets qualitative data?
Answer:
any data should work as long as you get the question right it should be all fine if you i had this question once and i different sums of data each or each way i did it.
What is the relationship between the volume of a gas and the Kelvin temperature (at
constant pressure)?
They are the same.
They are inversely proportional to each other
They are directly proportional to each other.
They are independent of each other.
Knowing how fossils form, do you think it’s likely that humans will ever piece together a complete fossil record for every species that ever existed on Earth? Why or why not?
Answer:
yes
Explanation:
since humans dig out the earth for resources o believe that fossils far every species that exists and is extinct will be found and will be pieced together
How could measuring the melting point of a solid help decide whether it was a mixture or a compound?
Answer: It can't.
Explanation:
In most cases, the melting point alone will not enable you to identify a compound. Millions of solid organic compounds, and their melting points, are known. Perhaps 10,000 of these will have the same melting point as your unknown compound.
Hope this helps!
mL? PLEASEEE HELP
What is the answer
HELP QUICK The dichotomous key was created with questions about permanent
physical characteristics.Each question in the dichotomous key has only ____ answer choices. The answer choices can be answered only with_________.
Answer:
The dichotomous key was created with questions about permanent
physical characteristics.
Explanation:
Answer:
permanent, two, yes or no
Explanation:
pls help ill mark as brainliest
Q8. Na2CO3 Na2O + CO2
is this combustion, synthesis, single replacement, double replacement, or decomposition ?
Answer:
Decomposition
Explanation:
First, you have one compound, then they break up, or decompose, into two compounds.
Which refers to the measure of the amount of water vapor in the air?
Answer:
humidity
Explanation:
5. An atom has 6 protons, 6
neutrons and 6 electrons.
Another atom has 6 protons,
7 neutrons and 6 electrons.
Are these two atoms the
SAME atom or DIFFERENT
atoms?
i need helppppp
Answer:
it is the same
Explanation:
the atom with 7 neutrons is the isotope of the atom of 6 neutrons. they share the same chemical behaviour but they differ in atomic masses and physical properties
(b) Define, in terms of oxidation state, the Oxidizing agent
a substance which gains oxygen
a substance whis lose hydrogen
a substance which experiences a decrease in oxidation state
a substance which experiences an increase in oxidation state
Answer: a substance whis lose hydrogen
Explanation:
(EASY!!) What is the name for this structure?
Answer:
ccc
Explanation:
yeah
Answer:
uhh I can't really tell- it looks like a lot of things
Explanation:
it kind of looks like a trapezoid or maybe a "gun" I haven't really seen a shape of this kind- so I'm going to say either one of those answers. sorry if I wasn't much help (◞‸◟ㆀ)
Two liters of hydrogen gas are stored at a
pressure of 100 kPa. If the temperature
does not change, what will the volume
of the gas be when the pressure is
decreased to 25 kPa?
Answer:
the volume will expand
Explanation:
gas under pressure contracts, and expands with a lesser pressure
The volume of the hydrogen gas at 25 kPa is 8 Liters.
Explanation:
Given:
At constant temperature, 2 liters of hydrogen gas at 100kPa pressure.
To find:
The volume of the hydrogen gas at 25kPa.
Solution:
The initial pressure of the hydrogen gas =[tex]P_1=100 kPa[/tex]
The initial volume of the hydrogen gas at 100 kPa =[tex]V_1=2 L[/tex]
The final pressure of the hydrogen gas =[tex]P_2=25 kPa[/tex]
The final volume of the hydrogen gas at 25kPa = [tex]V_2=?[/tex]
Using Boyles law:
[tex]P_1V_1=P_2V_2\\100kPa\times 2 L=25 kPa\times V_2\\V_2=\frac{100 kPa\times 2L}{25 kPa}=8L[/tex]
The volume of the hydrogen gas at 25 kPa is 8 Liters.
Learn more about Boyles law here:
brainly.com/question/12835309?referrer=searchResults
brainly.com/question/1437490?referrer=searchResults
How many atoms in 134 moles of an element B?
Answer:
8.06966961e+25
Explanation:
Atom = Mole / 6.0221415E+23
1 Mole = 6.0221415E+23 Atom
Answer:
8.06948e+25 atoms
Explanation:
mole = number of particles/avogadro number
number of atoms = mole × avogadro number
number or atoms = (134) x (6.022× 10²³) = 8.06948e+25 atoms
An acid-base reaction can also be classified as what "type" of chemical
reaction?
Answer: neutralization reaction
Explanation:
An acid-base reaction is a type of chemical reaction that involves the exchange of one or more hydrogen ions, H+, between species that may be neutral (molecules, such as water, H2O) or electrically charged (ions, such as ammonium, NH4+; hydroxide, OH−; or carbonate, CO32−).
