Answer:
Burning oil can pollute the air. Much of our oil has to be imported and it is becoming more and more expensive as reserves reduce and imports increase. Producing electricity from crude oil is expensive compared to other fossil fuels such as coal or gas.
Explanation:
Chemical symbols stand for?
Answer Explanation:
If it is like H, or O or N or Na or Cl, those are the elements. Those are on the Periodic table. pH is the acidity and basicity of a substance, how acidic or basic(caustic) it is. mol is Moles. kPa is kilopascals. STP is standard temperature and pressure, at 0*C(Celsius), or 273.15 K(Kelvin), and 101,325 pascals, or 101.325 kilopascals.
Avagadro's Number is 6.022x10^23, the number of atoms in a mole. The Ideal Gas Law is P(Pressure in kPa) times V(Volume in L, liters) equals n(number of moles of gas) times R(the universal gas constant, or 8.3145 (L kPa/K mol) or 8.3145 liters kilopascals per Kelvin mole. that is just a few of them.
Define Acid and alkalis
Answer:
mark me brainliest
Explanation:
An acid is a substance that has a pH lower than 7. For example, hydrochloric acid, sulphuric acid, citric acid, ethanoic acid (vinegar). A base is a substance that neutralises an acid – those that dissolve in water are called alkalis. An alkali is a soluble substance with a pH higher than 7.
Answer:
The chemical which give hydrogen ion when dissolve in water is called acid.for example:HCL,HNO3,H2SO4 etc.
The bases that dissolve in water and produce hydroxyl ions are called alkalis.for example:NaOH,KOH etc.
Explanation:
Giving Bainliest!!!!!
In 2-3 sentences, describe the basic properties of waves including frequency, amplitude, wavelength, and speed.
Answer:
frequency: This is the number of oscillations in one second or number of complete wavelengths produced in one second.Amplitude: This is the maximum displacement of a particle from its mean position.Wavelength: This is the distance between one crest and another or one trough and another.Speed: This is the distance a wave travels in a given amount of time.which organic compound has 4 carbon atoms with at least one triple bond?
Answer:
butene
Explanation:
Write the electronic configuration of the following element or ion and circle on their valance electrons
A.27 Al =
13
B. 31p-3
15
please answer my question now ! I will give you a Brinalist
1s2,2s2,2p6
Explanation:
electron arrangements
Why is this conveyor important for Earth?
Answer:
.
Explanation:
Answer:
The great ocean conveyor plays a highly significant part in the climate of the planet. It transports heat to the Polar Regions, for example. In doing so, the amount of ice that can be formed in these regions is limited.
PLEASEEEE HELP :')
''If 5.6 mole of calcium metal is reacted, how many grams of calcium phosphide will form?'
Answer:
340 grams Ca₃P₂ (2 sig. figs.)
Explanation:
3Ca + 2P => Ca₃P₂
5.6 mole + excess => ? grams
Convert the 'known' to a coefficient of 1 by dividing all coefficients by 3.
=> Ca + 2/3P => 1/3Ca₃P₂
From the above, 1 mole of Ca => 1/3 mole Ca₃P₂
∴ 5.6 mole Ca in an excess of P => 1/3(5.6 mole) Ca₃P₂
=> 1.8666 mol Ca₃P₂ (calculator answer) ≅ 1.9 mol Ca₃P₂
=> 1.9 mole x 182 g Ca₃P₂/mol Ca₃P₂ = 339.73333 grams Ca₃P₂
≅ 340 grams Ca₃P₂ (2 sig. figs.)
What is a decay series?
a series of reactions that never ends
a different form of chemical bonding
a chain of decays that results in a stable nucleus
a series of chemical reactions that ends with a decay\
HELPPPPPP
Answer:
a chain of decays that result in a stable nucleus
Explanation:
Decay series is a series of decay in which radioactive element is decomposed in different elements until it produces one stable atom.
Answer:
C
Explanation:
took test Edg
Why do you think evolution is important?
1.00 mole of an ideal gas occupies a volume of 22.4 L at 0 C and 760 mmHg (STP). It is cooled to -41 C while the pressure is increased to 805 mmHg. What is the new volume of the gas in liters?
Answer:
[tex]V_2=18.0L[/tex]
Explanation:
Hello there!
In this case, according to the given information, we infer that we need the combined gas law in order to solve this problem:
[tex]\frac{P_2V_2}{T_2}} =\frac{P_1V_1}{T_1}}[/tex]
Thus, by suing the temperatures in Kelvins, we can solve for the final volume as shown below:
[tex]V_2 =\frac{P_1V_1T_2}{T_1P_2}}\\\\V_2 =\frac{(760mmHg)(22.4L)(232K)}{(273K)(805mmHg)} \\\\V_2=18.0L[/tex]
Regards!
beta-plus decay sodium protons and neutrons
Answer:
(β-decay) is a type of radioactive decay in which a beta particle (fast energetic electron or positron) is emitted from an atomic nucleus, transforming the original nuclide to an isobar of that nuclide. For example, beta decay of a neutron transforms it into a proton by the emission of an electron accompanied by an antineutrino; or, conversely a proton is converted into a neutron by the emission of a positron with a neutrino in so-called positron emission.
Explanation:
Answer:
Beta decay occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other. ... In beta plus decay, a proton decays into a neutron, a positron, and a neutrino: p Æ n + e+ +n.
Explanation:
Plz answer fast , (it’s a picture
Answer:
Explanation:
1.4193.61
2.1.69205e7
3.1.57611e14
4.46270.5
how does gas create pressure?
a. the force of a collision between two gas molecules with the same amount of kinetic energy creates pressure
b. the force of a collision of a gas molecule against the walls of its container create pressure
c. the force of a collision between two gas molecules with different temperatures creates pressure
d. the force of a collision of a gas molecule against the air in a container creates pressure
How many moles are in 25.0 grams of KMnO4?
0.124 mol KMnO4
0.158 mol KMnO4
0.199 mol KMnO4
0.316 mol KMnO4
Answer:
158 mol :)
Explanation:
Which is closer to the Sun—Neptune or the Earth?
O A.
The distance from the Earth to the Sun cannot be determined.
OB.
The Earth is closer to the Sun than Neptune is.
OC. They are the same distance from the Sun.
OD.
Neptune is closer to the Sun than the Earth is.
Answer: The earth is closer to the sun than neptune is
Explanation:
Answer:
The Earth is closer to the Sun than Neptune is.
Explanation:
pov
Two groups of students were given the same test. One group of students studied for 2 hours and the other group of students did not study at all. The group of students who studied achieved higher grades on the test. What is the DEPENDENT variable?
Answer:
Grade achieved is the dependent variable in the study.
Explanation:
A variable in any research or study is any property, characteristic, number, or a quantity which shows variability or change in its value i.e. it increases or decreases over time, depending on the treatment conditions.
There are two types of variables: Dependent variable and Independent variable.
An independent variable does not depent on any factor for its value or result, rather, a change units value brings about a change in the dependent variable.
A dependent variable is the variable which depends on some factor which the researcher controls. Any change made on the factor by the researcher would bring about a change on the dependent variable.
For example, in the given example above, studying habit affects academic performance. If a student studies more, his/her academic performance will improve as they will achieve higher grades. On the other hand, if a student fails to study, their academic performance will not show any improvement when compared to the group of students who studied. Thus, grade improvement depends on studying habit.
Therefore, grade obtained is the dependent variable in the study.
1
50.0 grams of an unknown metal is heated to 100.0°C and then placed in a calorimeter with 250.0 mL of water. If the final temperature of the
metal is 29.1°C and the calorimeter absorbed 824 Joules of energy, what
is the specific heat of the unknown metal? *
What is the oil refining process?
Answer:
"the chemical engineering processes and other facilities used in petroleum refineries to transform crude oil into useful products such as liquefied petroleum gas, gasoline or petrol, kerosene, jet fuel, diesel oil and fuel oils"
-wikipedia
Explanation:
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
An oil refinery or petroleum refinery is an industrial process plant where crude oil is transformed and refined into useful products such as petroleum naphtha, gasoline, diesel fuel, asphalt base, heating oil, kerosene, liquefied petroleum gas, jet fuel and fuel oils.
Thanks Hope it helps.4.A high-quality sleeping bag will keep you warm even during a winter camping trip high in the mountains. How do you stay warm when the air around you is very cold?
A. The sleeping bag produces thermal energy that keeps you warm.
B. The sleeping bag transfers thermal energy from the air to your body.
C. The sleeping bag slows the transfer of thermal energy produced by your body into the air.
D. The sleeping bag increases the production of thermal energy by your body
Answer:
I think it's C
Explanation:
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
In the lab jill mixed 3 gases together. The resulting pressure was 930 mmHg carbon dioxide had a partial pressure of .70 atm and oxygen had a partial pressure of 680 mmHg. What is the partial pressure of nitrogen in kPa
Answer:
26.2kPa is the partial pressure of nitrogen
Explanation:
Assuming the partial pressure of Carbon dioxide is 0.070atm
The total pressure of a mixture of 3 gases (CO2, O2 and N2) is:
Total pressure = Partial pressure CO2 + Partial pressure O2 + Partial pressure N2
0.070atm CO2 are:
0.070atm * (760mmHg / 1atm) 53.2mmHg
Replacing:
930mmHg = 53.2mmHg + 680mmHg + Partial pressure N2
Partial Pressure N2 = 196.8mmHg
In kPa -101.325kPa = 760mmHg-
196.8mmHg * (101.325kPa / 760mmHg) =
26.2kPa is the partial pressure of nitrogenWILL GIVE BRANLIEST!!! Methane, CH4 is a __ (polar, nonpolar) molecule. In a molecule of methane, the primary intermolecular forces are ___ (London dispersion forces, dipole dipole forces, hydrogen forces, hydrogen bonding)
Answer:
Nonpolar; London dispersion forces
Explanation:
What mass of LiOH would need to be dissolved in water to make 300.0 mL of a solution with a pH of 11.33?
Execute Order 66________________
The mass of LiOH needed to make a 300 mL of a solution with a pH of 11.33 is 0.015 g
We'll begin by calculating the pOH of the solution.
pH = 11.33
pOH =?
pH + pOH = 14
11.33 + pOH = 14
Collect like terms
pOH = 14 – 11.33
pOH = 2.67 Next, we shall determine the concentration of hydroxide ion, OH⁻pOH = 2.67
Concentration of hydroxide ion [OH⁻] = ?pOH = –Log [OH⁻]
2.67 = –Log [OH⁻]
–2.67 = Log [OH⁻]
Take the as antilog of –2.67
[OH⁻] = antilog (–2.67)
[OH⁻] = 0.0021 MNext, we shall determine the concentration of LiOH.LiOH(aq) —> Li⁺(aq) + OH⁻(aq)
From the balanced equation above,
1 mole of LiOH contains 1 mole of OH⁻
Therefore,
0.0021 M LiOH will also contain 0.0021 M OH⁻.
Next, we shall determine the mole of LiOH in the solution.Molarity of LiOH = 0.0021 M
Volume = 300 mL = 300 / 1000 = 0.3 L
Mole of LiOH =?Mole = Molarity × volume
Mole of LiOH = 0.0021 × 0.3
Mole of LiOH = 0.00063 moleFinally, we shall determine the mass of LiOH needed to prepare the solution.Mole of LiOH = 0.00063 mole
Molar mass of LiOH = 7 + 16 + 1 = 24 g/mol
Mass of LiOH = ?Mass = mole × molar mass
Mass of LiOH = 0.00063 × 24
Mass of LiOH = 0.015 gTherefore, the mass of LiOH needed to prepare the solution is 0.015 g
Learn more: https://brainly.com/question/5851093
Assertion: The Nitrogen atom loses its 3 valence electrons to form its ion
Reason: Nitrogen ion is an anion
(a) Both assertion (A) and Reason (R) are true, and reason (R) is the correct explanation of assertion (A).
(b) Both assertion (A) and Reason (R) are true, but reason (R) is not the correct explanation of assertion (A).
(c) Assertion (A) is true, but reason (R) is false.
(d) Assertion (A) is false, but reason (R) is true
A mutation can cause which of the following in an organism?
1 Have no effect
2Be beneficial
3 Be harmful
6Causes a new trait
5 All of the above
Answer: 5 all of the above
Explanation:
A mutation can be a blessing or a curse. It can also have no effect on the person at all.
Hope this helps
What is the role of the producer in any food chain?
Question 1 options:
Producers turn light energy into food energy
Producers make the food that consumers eat
Without producers, consumers would starve
All of these answers are correct
Answer:
All of these answers are correct.
Explanation:
They are all correct because producers make their food(energy) through photosynthesis, they provide food to herbivores and therefore the rest of the food chain, and without them, the food chain would collapse and all the consumers would starve.
SOMEBODY PLEASE HELP ME ASAP. WILL GIVE BRAINLIEST TO BEST ANSWER.
Answer:
135.80 g of Ag
Explanation:
[tex]40gCu *\frac{1mol Cu}{63.546g Cu} *\frac{2mol Ag}{1molCu} *\frac{107.868g Ag}{1mol Ag}[/tex]
~ 135.80 g of Ag
8. If 400 mL of gas has a temperature of 75°C, then what would be the new volume if the temperature increased to 95°C?
We are given:
V₁ = 400 mL T₁ = 75°c = (273+75)K = 348K
V₂ = x mL T₂ = 95°c = (273+95)K = 368K
Deriving Boyle's Law:
here, we can see that the volume and temperature are the only variables
from the ideal gas equation:
PV = nRT
T /V = P / nR
because P, n and R are constants, P/nR is a constant value
T / V = constant
which means that the initial and final ratio of P and T will be constant, hence:
T₁ / V₁ = T₂ / V₂, this is also known as the Charles' law. what I did above was it's derivation
Finding final volume:
plugging the given values:
348/400 = 368 / x
x = 368*400 / 348
x = 422.9 mL
What mass of copper metal will be formed when excess magnesium metal is reacted with:
(a) 250.0 mL of a 1.0 M copper M chloride solution (b) 100.0 mL of a 0.25 M copper (II) chloride solution
Answer:
A
Explanation:
calculate the atomic mass of gallium if gallium has two naturally occurring isotopes with the following massess and natural abundances Ga-69 68.9256 amu 60.11% Ga-71 70.9247 amu 39.89
Answer: Atomic mass of gallium = 69.72304093 amu
Explanation:
We calculate the atomic mass of Gallium by using the Relative abundance of the isotopes.
Atomic mass =mass x Natural Abundance of Isotope 1 +mass x Natural Abundance of Isotope 2
(60.11/100 x 68.9256) + (39.89/100 x 70.9247)
= 41.43117816 + 28.29186283 = 69.72304093 amu
A 50,000 g septic tank reading reports that methane gas bubbles are present with a concentration of 17 ppm
Answer:
[tex]m_{solute}=0.85g[/tex]
Explanation:
Hello there!
In this case, according to the given information for the parts per million of methane in this solution, it is possible for us to first write the equation for this unit of concentration as shown below:
[tex]ppm=\frac{m_{solute}}{m_{solvent}} *1x10^6[/tex]
In such a way, since the septic tank has a mass of 50,000 g, the mass of methane into it is calculated as shown below:
[tex]m_{solute}=\frac{ppm*m_{solvent}}{1x10^6}[/tex]
Now, we plug in the numbers to obtain:
[tex]m_{solute}=\frac{17*50000g}{1x10^6}\\\\m_{solute}=0.85g[/tex]
Regards!