Answer:
D. The resulting solution does not conduct electricity.
Explanation:
Hello there!
In this case, for the given chemical reaction we can say that:
A. it is true because the nitric acid ionizes into hydrogen and nitrate ions
B. it is a decomposition reaction because the acid is partitioned into the composing ions.
C. it is ionized to hydrogen cations and nitrate anions.
D. this is incorrect because nitric acid is a strong electrolyte able to conduct the electricity.
Regards!
is smoke a compound or a mixture? explain your answer.
Explanation:
hope it is helpful to you ☺️
write one word for the following short form of an element
Answer:
symbol?
Explanation:
31. A mixture with sand, pink sugar and water would be best separated using
Answer:
Filtration and evaporation
Explanation:
A mixture of sand, pink sugar and water can be separated by filtration and evaporation.
The pink sugar is already dissolved in the water but the sand remains undissolved in the water hence it can be filtered off. The filtrate now contains the sugar.
The sugar is obtained from the filtrate by evaporation of the solution to yield the solid pink sugar and steam which can be condensed again to give liquid water.
What is the oxidation number of carbon in the compound carbon dioxide, CO2?
A) +3
B)+2
C)-3
D)+4
Answer:
the oxidation number is 4
Me podrían decir el nombre de los siguientes alcanos ramificados (the name of the following branched alkanes)
Answer:
e)3-etilo-5,6,6-trimetilodecano
how many atoms are equal to 1.5 moles of hellium
Answer:
There are 1.8×1024 atoms in 1.5 mol HCl
Explanation:
(1) Complete the word equation for the complete combustion of methane in
oxygen.
→ water +
methane +
en of methane can produce carbon and
Cooled in ice to help the water vapour condense. Tube 2 – contains lime water, goes cloudy to show the presence of carbon dioxide. Word equation: (hydrocarbon + oxygen → carbon dioxide + water) Methane + oxygen → carbon dioxide + water.
C12H22011 → 12C + 11H20
How many atoms of hydrogen are involved in this chemical reaction?
A.11
B.22
C.33
D.44
Answer:
the answers to your question is b.22
Why are protists that are heterotrophs considered "animal-like"? A they make their own food. B They don't need energy C They feed on other organisms.
Answer:
A, Animal-like protists are called protozoa. ... Like animals, they can move, and they are heterotrophs. That means they eat things outside of themselves instead of producing their own food
Explanation:
can some kind soul help me plss
convert propanamine to propylalcohol
Answer:
Yeah
Explanation:
Propylene glycol can be dehydrated to propionaldehyde which can in turn be reductively aminated to propylamine.
Propionaldehyde can be converted to n-propyl amine in two steps.
Conversion of propionaldehyde to oxime
Propionaldehyde is treated with hydroxyl amine in weakly acidic medium to form imine product known as propionaldoxime.
CH₃CH₂CHO+NH₂OH->CH₃CH₂CH=N-OH+H₂O
Reduction of imine to form amine
In this step,propionaldoxime is reduced by proper reducing agent like Na in ethanol to form n-propyl amine.
CH₃CH₂CH=NO-Na-C₂H5OH-> CH₃CH₂CH₂NH₂
molecular formula of calcium oxide
Answer:
Calcium oxide, commonly known as lime, is a chemical compound with the formula CaO.
20 POINTS 1. What is the contour interval of the above topographic map? 2. What is the change in elevation from point Y to point Z?
3. Which way does the Maple Stream flow?
4. Which hill is taller?
5. Which hill has the steepest sides?
6. What is the elevation of point A?
Answer:
1 1
Explanation:
Hill
1
Because both tin and carbon are members of Group 4A(14), they form structurally similar compounds. However, tin exhibits a greater variety of structures because it forms several ionic species. Predict the shape and ideal bond angle, including any deviations, for SnCl3−.
Answer:
See Explanation
Explanation:
Elements in group fourteen are mostly known to form compounds in which there are four electron domains leading to a tetrahedral electron domain geometry.
However, the presence of lone pairs affects the shape of the molecule. SnCl3− has four electron domains, three of them are bond pairs while one is a lone pair. The shape of the molecule is based on a tetrahedron, however the observed geometry is trigonal pyramidal due to the presence of the lone pair. Its bond angle is now less than the predicted 109 degrees.
What is the state of matter involved in a solution and colloid
Explanation:
colloid is a mixture in which one substance of microscopically dispersed insoluble particles are suspended throughout another substance. However, some definitions specify that the particles must be dispersed in a liquid,[1] and others extend the definition to include substances like aerosols and gels. The term colloidal suspension refers unambiguously to the overall mixture (although a narrower sense of the word suspension is distinguished from colloids by larger particle size). A colloid has a dispersed phase (the suspended particles) and a continuous phase (the medium of suspension). The dispersed phase particles have a diameter of approximately 1 nanometre to 1 micrometre.[
hope it helps.
Answer:
colloids are mixtures in which one or more substances are dispersed as relatively large solid particles or liquid droplets throughout a solid ,liquid or gaseous medium .The particles of a colloid remain and do not settle due to gravity ,and they are often electrically charged
hope it helpedAn artificial biosphere is an enclosed area that contains the elements necessary for human life to exist. Suppose scientists want to develop an artificial biosphere on a new planet. The new planet has an atmosphere that is 96% carbon dioxide with only trace amounts of oxygen. What could humans do to make enough oxygen to survive? Explain your answer.
Answer:
See Explanation
Explanation:
A biosphere is a zone of life found on earth. Since the artificial biosphere has all the elements that support and sustain human life, then there must also be soil in the artificial biosphere.
If that is the case, then we can engage in massive tree planting. Trees take in carbon dioxide and release oxygen. Hence if a large number of trees are planted all over the artificial biosphere, the trees will eventually produce large enough oxygen to support human life overtime.
An object is moving across a surface, but it does not gain or lose speed.which best describes the objects force
Answer:
Constant
Explanation:
Here's the definition of the noun:
"A situation that does not change"
In this case the situation is the speed of the object.
If you'd like to go into further detail, let's move away from English and jump into Physics. The question asked for "object's force" - keyword: 'force'. What's the formula for force? F = m * a.
F = Force, m = mass, a = acceleration.
Okay well, the question said only the speed changes and doesn't mention the mass changing so if the mass changes the force won't be constant. However, if the mass doesn't change (constant), we can continue to acceleration.
The formula for acceleration is (I think) m/s^2, that's metres over time, squared. As we know from English class; the speed is constant and thus the square of that speed is also constant - therefore the acceleration is constant.
Now, putting them together, assuming the mass is constant, we know the acceleration is constant so the force has to be constant. Case closed.
*mic drops, this was a waste of time*
3. Designing the caisson…Using technology you think would be available in the late 1800s, what could you do to keep temperatures in the caisson as low as possible? How else can you protect your workers from the dangers of high heat?
Answer:
By using insulating material.
Explanation:
By making the material cover with insulator in that way the we can protect the workers from the dangers of high heat because the insulator are the poor conductor of heat so the heat from the surrounding environment did not enter inside the metal. There are certain materials which remain cool if they receive heat from the surrounding environment so by using these types of materials can be useful on the cover of caisson to reduce heat in the inner side and protect the workers from the dangers of high heat.
is smoke chemically combined?
Answer:
yes smoke is chemically combined because smoke is a collection of airborne solid and liquid particles and gases released when a material burn.
hope it is helpful to you
What does the line with “alternating spikes and semicircles” mean?
Answer:
The line with spikes and semicircles is a stationary front, it brings days of steady rain.
Explanation:
L means Low pressure, it brings stormy weather with strong winds.
H means High pressure, it brings fair weather and light winds.
The line with spikes is a cold weather front, it brings thunderstorms and colder
temperatures.
The line with spikes and semicircles is a stationary front, it brings days of steady rain.
9. Thallium-208 has a half-life of 3.053 min. How long will it take for 120 g of it to decay
to 7.5 g?
Answer:
12.213 minutes will be taken for 120 g-Thalium-208 to decay to 75 grams.
Explanation:
Radioactive isotopes decay exponentially in time, the mass of the isotope ([tex]m(t)[/tex]), in grams, is described by the formula in time ([tex]t[/tex]), in minutes:
[tex]m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }[/tex] (1)
Where:
[tex]m_{o}[/tex] - Initial mass of the isotope, in grams.
[tex]\tau[/tex] - Time constant, in minutes.
In addition, the time constant associated with the isotope decay can be described in terms of half-life ([tex]t_{1/2}[/tex]), in minutes:
[tex]\tau = \frac{t_{1/2}}{\ln 2}[/tex] (2)
If we know that [tex]m(t) = 7.5\,g[/tex], [tex]m_{o} = 120\,g[/tex] and [tex]t_{1/2} = 3.053\,min[/tex], then the time taken by the isotope is:
[tex]\tau = \frac{t_{1/2}}{\ln 2}[/tex]
[tex]\tau = \frac{3.053\,min}{\ln 2}[/tex]
[tex]\tau \approx 4.405\,min[/tex]
[tex]t = -\tau \cdot \ln \frac{m(t)}{m_{o}}[/tex]
[tex]t = -(4.405\,min)\cdot \ln \left(\frac{7.5\,g}{120\,g} \right)[/tex]
[tex]t \approx 12.213\,min[/tex]
12.213 minutes will be taken for 120 g-Thalium-208 to decay to 75 grams.
12.21 minutes will it take for 120 g of Thallium-208 to decay
to 7.5 g.
What is half life period?Half life period is that time in which half of the reactant is convert into product.
In the question it is given that,
Initial mass of Thallium-208 = 120g
Final mass after decay = 7.5g
And half life of this decay = 3.053 min
Here we can calculate the total time of decay by the formula : T = t × n.
Where, T = total required time
t = half life
n = no. of half life required to decompose reactant.
120 → 60 →30 → 15 → 7.5
From the above sequence it is clear that we require 4 times of half life to decompose 120g to 7.5g.
So, T = 3.053 × 4 = 12.21 minutes
Hence, 12.21 minutes will it take to decay.
To learn more about half life, visit below link:
https://brainly.com/question/2320811
A cylinder is labeled \"PENTANE.\" When the gas inside the cylinder is monochlorinated, five isomers of formula C5H11Cl result. Was the gas pure n-pentane, pure isopentane, pure neopentane, or a mixture of two or all three of these?
Answer:
a mixture of two these
Explanation:
The number of isomeric monochlorides depends on the structure and number of equivalent hydrogen atoms in each isomer of pentane.
n-pentane has three different kinds of equivalent hydrogen atoms leading to three isomeric monochlorides formed.
Isopentane has four different types of equivalent hydrogen atoms hence four isomeric monochlorides are formed.
Lastly, neopentane has only one type of equivalent hydrogen atoms that yields one mono chlorination product.
Hence the cylinder must contain a mixture of isopentane and neopentane which yields four and one isomeric monochlorides giving a total of five identifiable monochloride products as stated in the question.
who is really good with chemistry and can help me with some questions/equations?
Answer:
I can help
Explanation:
Explain how the percentages of nitrogen , oxygens and carbon dioxide in the earth atmosphere today have changed from the earth
Answer:
See below
Explanation:
The atmosphere of the earth hundreds of millions of years ago was only water vapour and carbon, both from the one ocean that existed around the continental body of Pangea. The photosynthesis process and exache (⊕) caused the percentages to decrease.
8. What is the chemical equation when calcium chloride combines with water?
Answer:
CaCI2 + H2O = Ca(OH)2 + HCI
What effect does the Earth's surface have on solar radiation?
Answer:
Thus, the proportion of Earth's surface that is covered by ice and snow affects how much of the Sun's solar radiation is absorbed, warming the planet, or reflected. Therefore, snow and ice which are covered in soot from pollution no longer reflect sunlight, but absorb it and so melting increases.
Answer:
Half of the solar radiation is absorbed and converted to infrared (heat).
Explanation:
i would appreciate it if someone could show me the net ionization reaction for the following equation:
CaCl2(aq) + 2NaHCO3 -> CaCO3 + 2NaCl + CO2 + H2O
thanks in advance!!
Answer:
Deduce the balanced chemical equation:
CaCO3(s) + 2HCl(aq) > CaCl2 + H2O(l) + CO2(g)
2. Write as ionic species:
Ca2+(aq) + CO3 2- (aq) + 2H+ + 2Cl- > Ca2+(aq)+ 2Cl-(aq) + H2O(l) + CO2(g)
3. Identify ions on the right that also appear on the left, and eliminate them. (As Robert Cruikshank says, these are known as ’spectator ions’ and take no overall part in the reaction):
CO3 2- (aq) + 2H+(aq) > H2O(l) + CO2(g)
This is the balanced ionic equation.
Please help!!!! Best answer will get brainliest
Answer:
covalent network
Explanation:
trust me on this one
What is the pH of a solution that has a [OH^-] of 1x10^-2?
2
12
9
8
ito Ang naimbento ni graham bell na nagpabilis sa pakikupagtalastasan
Answer:
ФОТОГРОФИРУЙ
ИЛИ НАПИШИ
В КОМЕНТЫ
how is density related to the color of igneous rocks?
Answer:
The density of igneous rocks is related to its color. Darker colored rocks have a higher density because of its greater mineral and iron content. Its characteristics is opposite compared to lighter colored rocks that have less density because of lower mineral and iron content