Answer:
A- antimony
Explanation:
Answer:
A
Explanation:
what happens when a liquid becomes a gas
Answer:
When a liquid changes to gas, the particles absorb heat energy and they start vibrating faster and distance between them increases. On constant vibration, intermolecular forces decrease and particles start moving away from each other and change to gas.
In which state of matter are electrons stripped from the nucleus
Plasma is one of the four common states of matter. A plasma is an electrically charged gas. In a plasma, some electrons have been stripped away from their atoms.
Explanation:
Plasma is one of the states of matter that are electrons stripped from the nucleus
What type of front is created when a warm air mass moves in to replace a
retreating cold air mass?
The type of fron created is a "warm" front.
what is the percent of phosphorus by mass in phosphoric acid h3po4
Explanation:
% phosphorus by mass
= (mass of phosphorus ÷ mass of phosphoric acid) × 100%
= (30.974 g/mol ÷ 97.994 g/mol) × 100%
= 31.61 %∴ percent of phosphorus by mass in phosphoric acid 31.61%.Finalmente responde:
- ¿Cuáles serían las características del agua filtrada que evidencie el funcionamiento del filtrador?
– Consideras que volver a filtrar la misma muestra de agua ¿disminuye la turbidez del agua?,, AYUDAAAAAAAAA
El agua se purifica a partir de un proceso de filtrado. Las características que evidencian el filtrado incluyen pH normal, color cristalino, ausencia de metales pesados y/o microorganismos, etc.
Los filtros para purificar agua son dispositivos que permiten el limpiado del agua con el objetivo de convertirla apta para consumo humano.En general, los filtros para lograr la purificación del agua consisten de carbón activado, el cual se prensa con alta presión. Este dispositivo de carbón activado permite secuestrar las partículas sólidas que pasan a través del filtro, con lo cual el agua sale a través del filtro completamente purificada.Las características que permiten determinar si el agua ha sido correctamente filtrada incluyen:
El agua sale cristalina, es decir, sin ningún tipo de color que evidencie la presencia de contaminación.El pH del agua potable debe oscilar entre valores normales (6,5 a 8,5)No debe contener metales tales como plomo, arsénico o cadmio (altamente tóxicos)No debe contener microorganismosAprende más sobre este tema en:
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Elements in the same period have the same…
Answer:
Elements in the same period have the same (number of electron shells)
2. What is the shape of the 3p atomic orbital?
7 protons and 8 neutrons to nuclide notation
Answer:
yes because its nuetrins notation
Determine the number of atoms in the following chemical formulas.
1. Naci
Answer:
2 atoms
Explanation:
How do you determine how many molecules are in a chemical equation
Answer:
Determine the mass of substance and it's molar mass. Divide the given mass by it's molar mass to get moles and multiply time
6.002*1023 molecules 1mole
A student must use 225 mL of hot water(cwater=4.184 J/g°C) in a lab procedure. Calculate theamount of heat required to raise the temperature of225 mL of water from 20.0 °C to 100.0 °C.
Answer: q = 64 kJ
Explanation:
As you know, a substance's specific heat tells you how much heat is required to increase the temperature of
1 g
of that sample by
1
∘
C
.
In water's case, you know that its specific heat is equal to
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 supply
4.18 J
of heat.
How much heat would you need to increase the temperature of
200 g
of water by
1
∘
C
?
Well, if you need
4.18 J
per gram to increase its temperature by
1
∘
C
, it follows that you will need
200
times more heat to get this done.
Likewise, if you were to increase the temperature of
1 g
of water by
76
∘
C
, you'd need
76
times more heat than when increasing the temperature of
1 g
by
1
∘
C
.
Combine these two requirements and you get the total amount of heat required to increase the temperature of
200 g
of water by
76
∘
C
.
Mathematically, this is expressed using the following 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
q
=
200
g
⋅
4.18
J
g
∘
C
⋅
(
100
−
24
)
∘
C
q
=
63536 J
I'll leave the answer rounded to two sig figs and expressed in kilojoules
q
=
64 kJ
What is the final temp of
solver if the temperature of
25.89 sample of silver
starts out at 30.0°C and
40.5) of heat is added?
The specific heat of silver
130235 ](°C).
help pleaseeeee <333
Answer:
In Test 1 the person substantially did better and either had better knowledge of the subject or studied for it more then they did for Test 2.
Explanation:
18. What is the volume of these gases at STP?
a. 3.20 x 10 mol CO2
b. 3.70 mol NH2
C. 0.960 mol CH4
Answer:
B 3.70 mol NH2
Explanation:
Answer:
A. 0.0717 L
B. 82.9 L
C. 21.5 L
I have a question does Neptune have a atmosphere?
Answer:
Neptune has a dynamic atmosphere with a shroud of cold clouds. The average cloud temperature ranges from about -240 degrees to -330 degrees F.
How bad of alcoholic do you have to be to have your brain affected
Answer:
Alcohol in Your Body
Alcohol reaches your brain in only five minutes, and starts to affect you within 10 minutes. After 20 minutes, your liver starts processing alcohol. On average, the liver can metabolize 1 ounce of alcohol every hour.
Explanation:
hope that helps you i just love sharing glmv sorry
What is sliver?
[tex]silver[/tex]
Chemical element
Silver is a chemical element with the symbol Ag (from the Latin argentum, derived from the Proto-Indo-European h₂erǵ: "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal.
Answer:
silver
Explanation:
is a chemical element with the symbol Ag (from the Latin argentum, derived from the Proto-Indo-European h₂erǵ: "shiny" or "white") and atomic number 47.
How does the use of synthetic products impact the natural resource from which they are derived?
Answer:
The series of chemical reactions that are used to change natural resources into synthetic products is called chemical synthesis. To make a "natural" product, the natural resource is not chemically changed as much. ... For example, the synthetic material plastic is made from petroleum, which is pumped out of the earth.
Explanation:
give brainliest!!!!
The use of synthetic products impact the natural resources from which they are derived by depleting the natural resource and causing harm to it.
What are natural resources?Resources which are obtained from nature by a few modifications in them are called natural resources.These are resources which are available in nature . Every synthetic product is composed of natural resources.
It may exist in a form of separate entity or in form of living-beings or the can even be transformed into products which are of economic importance.Because of the transformation of natural resources into products of economic importance they are getting depleted at a rate which much times greater than the rate it was getting depleted several years ago.
As the products available today comprise of synthetic products natural resources are getting depleted which is becoming a global concern.
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PLS HELP ASAP!
How many years?
The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is 5.73×103 years.
A wooden artifact in a museum has a 14C to 12C ratio that is 0.745 times that found in living organisms. Estimate the age of the artifact.
use graph
Answer:
about 5 years i think
Explanation:
I've tried all the methods i know
it's about 5 years
hope it helps
The age of the artifact is equal to 2.5 × 10³ years when the half-life of carbon- 14 is 5.73 × 10³ years.
What is the half-life period?The half-life of a radioactive element is defined as the time that is required to decrease the original quantity of a radioactive isotope to half after decay.
The half-life of a radioactive isotope is the feature of the element and does not depend upon the actual amount of the radioactive isotope.
Given, the ratio of the initial and left amount of ¹⁴C is :
N = 0.745 N₀
The half-life period of the ¹⁴C isotope = 5.73 × 10³ years
The rate constant of the decay of radioisotope can be calculated from the below-mentioned formula:
[tex]\displaystyle k=\frac{0.693}{t_{1/2}}[/tex]
[tex]\displaystyle k=\frac{0.693}{5.73 \times 10^3}[/tex]
k = 0.123 × 10⁻³ yr⁻¹
The age of the artifact can be calculated as:
[tex]\displaystyle t =\frac{2.303}{k} log\frac{N_0}{N}[/tex]
[tex]\displaystyle t =\frac{2.303}{0.123\times 10^{-3}} log\frac{N_0}{0.735 N_0}[/tex]
t = 2.5 × 10³ years
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The arrangement of particles is most ordered in a sample of
1.
NaCl(aq)
2.
NaCl(l)
3.
NaCl(g)
4.
NaCl(s)
PLEASE HELP
We have that the arrangement of particles of NaCl is most ordered in a sample of
NaCl(s)
i.e solid NaCl
From the question we are told
The arrangement of particles is most ordered in a sample of
1. NaCl(aq)
2. NaCl(l)
3. NaCl(g)
4. NaCl(s)
NaCl Generally known as sodium chloride or salt exist in four main states as shown
1. NaCl(aq)
2. NaCl(l)
3. NaCl(g)
4. NaCl(s)
Mow in a subject of its arrangement of particles we can see that as its state changes from gaseous through to solid it gains in form and arrangement of particles
Therefore
The arrangement of particles of NaCl is most ordered in a sample of
NaCl(s)
i.e solid NaCl
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What are the relationships among a hydrogen atom's energy levels, sublevels, and atomic
orbitals?
The relationship between an hydrogen atom's energy levels, sublevels and atomic orbitals lies in the fact that hydrogen atom has a shell with energy level of 1 and the energy sublevels are similar as there's only one and have the same energy, and lastly, only one atomic orbital exists in a hydrogen atom
Generally, an atoms energy level, sublevels and atomic orbitals are described by the four quantum numbers if it's Valence electrons.Among laws of atomic theory is the fact that no two electrons can have the same value for all four quantum numbers in an atom.Ultimately, the hydrogen atom has only one electron In the energy level 1, sublevels with equal energy as there are no sublevels in the energy level 1 and only the 1s atomic orbital.
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what is the total number of valence electrons un xenon(xe)
Answer:
8
Explanation:
Hope this helps you :)
what should be done if a spectrophotometer reports an absorbance that is too high?
what is the maximum receiving temperature for tcs in degrees fahrenheit
Explanation:
135F is the temperature
The maximum temperature that a TCS dishes can hold is 135° C and 275 Fahrenheit.
What is TCS dishes?Time/temperature control safety is a measurement of the temperature hold capacity of certain food, such as meat, fish, dairy, cream and custard products.
Thus, the maximum temperature that a TCS dishes can hold is 135° C and 275 Fahrenheit.
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as you move to the right across the periodic table, beginning with group 16, non-metals…
a) lose more electrons
b) gain or share fewer electrons
c) gain or share more electrons
PLEASE HELP!!
Which element in Fe(NO3) is a metal?
O
N
Fe
Answer:
Explanation:
Most periodic tables have a staircase thick line on their right side. This line separates the metals from the non metals.
O (oxygen) and N (nitrogen) are on the right side of the staircase.
Fe is on the left.
Those elements on the right side of the staircase are non metals.
Those elements on the left of the staircase are metals, so Fe is a metal.
For each pair of terms below, write a sentence that summarizes how they are different.
thermal conductor, thermal insulator
thermal expansion, thermal contraction
um I don't know just thanks :(
Answer:
i think it would be answer D
Explanation:
How many carbon atoms are represented by the model below?
A. 3
B. 2
C. 1
D. 4
a mixture in which substances are distributed evenly
