When a particle and its antiparticle collide they are converted to energy.
What is collide?A colloid would be a mixture in which a component made up of insoluble particles that are scattered at a microscopic scale is suspended within another component.
What is energy?In order to accomplish work and to produce heat as well as light, energy must be supplied to a body or even to a physical system. Energy would be the quantitative attribute that does this. Energy would be transformed in form but cannot be created and destroyed, according to the rule of conservation of energy.
Annihilation occurs when a particle collides including its anti-particle. The particle and its antiparticle's whole mass are transformed back into energy to produce two gamma-ray photons. You won't find antiparticles in everyday stuff since they typically barely last for a tiny amount of time until annihilation takes place.
Therefore, the correct answer will be option (c).
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please help its due tonight!!! also no links allowed.
When 28,242 J are transferred to a water sample, it's temperature increases from 18⁰C to 63⁰C. Determine the mass of the water sample.
Answer:
149.79 grams.
Explanation:
Formula
Joules = m * c * delta (t)
Givens
J = 28242
m = ?
c = 4.19
Δt = 63 - 18 = 45
Solution
28242 = m * 4.19 * 45
28242 = m * 188.55
m = 28242 / 188.55
m = 149.79
What do plants do that requires Energy?
Answer:
Photosynthesis
Explanation:
Photosynthesis uses energy from light to convert water and carbon dioxide molecules into glucose (sugar molecule) and oxygen. The oxygen is released, or “exhaled”, from leaves while the energy contained within glucose molecules is used throughout the plant for growth, flower formation, and fruit development.
what kind of elements form ionic compounds?
Answer:
Ionic compounds generally form between elements that are metals and elements that are non metals. For example, the metal calcium (Ca) and the non metal chlorine (Cl) form the ionic compound calcium chloride (CaCl2). In this compound, there are two negative chloride ions for each positive calcium ion.
Explanation:
Mark as brainliest
What are these means in Periodic Table;
Group
Period
Block
In the above equation how many moles of NO can be made when 43 moles of HNO3 are consumed?
Answer:
rn4y8rg7348y0rp934nrf3
efjewhrf8h934hfr84398wgfyu8o
Explanation:
fe8u34h4n3urhu93q4pirnpqr34uwbry8439br8u3i2rpi34ofreuebue rf ef erf3rw wg
Plz someone help, really struggling
How many liters of carbon monoxide are needed to react with 32.65 g oxygen gas to produce carbon dioxide?
Answer:
2.040 mol CO
Explanation:
First, write out your reaction:
CO + O2 --> CO2
Balance the reaction:
2CO + O2 --> 2CO2
Now divide the 32.65 g O2 by the molar mass of O2 (32.00 g/mol) to get moles of O2. Then multiply by the mole ratio of 2 mol CO for every 1 mol O2 to get moles of CO needed to fully react.
32.65 g O2 / 32.00 g/mol = 1.020 mol O2
1.020 mol O2 • 2 mol CO / 1 mol O2 = 2.040 mol CO
A covalent bond is formed when two atoms reach a stable state that balances:
MARK TWO RESPONSES
A
the repulsion between the nucleus protons of one atom to the electrons of the other atom
B
the attraction between the nucleus of one atom to the electrons of the other atom
C
the attraction between the two nuclei of the atoms, which both contain protons
D
the repulsion between the two nuclei of the atoms, which both contain protons
Answer:
B and I think A but you may want a secon opinion on that
Explanation:
I know that electrons are shared with covalent bonds so I assume the 2 answers are the ones with electrons it them
Researchers are confident that they can boost suberin production by this many times? This is for science btw
if the solution is acidic, which ion is found in greater concentration?
Answer:
An acidic solution has a high concentration of hydrogen ions (H +start superscript, plus, end superscript), greater than that of pure water.
The acidic solution indicates the highest concentration of hydrogen or the proton ion in the solution.
What is acidity?Acidity is the measure of the hydrogen ion in the solution by the pH scale and gives the acidic or basic characteristics to the solution.
The concentration of the hydronium or the hydroxide in the solution is a way to determine the acidic basic nature and the pH and pOH of the solution.
Therefore, in an acidic solution hydrogen ions are in the greatest concentration.
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PLZ HELP ME!!!! I will give brainlist
1. When water evaporates, the water _____ energy. This is an example of an _____ reaction.
Select one:
a. releases, endothermic
b. absorbs, endothermic
c. absorbs, exothermic
2. Which of the following is an example of increasing entropy?
Select one:
a. a solution becomes more dilute
b. a solute crystallizes
c. total number of product molecules is less than the reactant molecules
Answer:
For 1, your answer is b. absorbs, endothermic. For 2, your answer is a. a solution becomes more dilute.
Explanation:
I took the test.
State and explain the three basic properties of element
Answer: Some are solid, some are gaseous, a few are liquid. Some are metallic: they have a peculiar lustre; some are coloured (like sulfur) or colourless. Some have a low density; some have a high density. Some are malleable and ductile; some are brittle. Some conduct electricity and heat well; some don’t.
Many metals tend to have structural uses. Nonmetallic elements less so.
Metals tend to have crystal forms featuring close-packed centro-symmetrical structures. Nonmetallic elements tend to have crystal structures featuring more open and directionally packed structures.
Some are especially toxic; some are essential to life; some are both depending on exposure level.
Most are stable; some are less so.
Some elements are highly reactive; some are almost inert (helium, neon, and argon may be completely inert in ambient conditions).
Many metals have basic oxides; quite a few oxides of nonmetallic elements form acids when they are dissolved in water. Some elements can go both ways.
There are many generalisations you can make about metallic and nonmetallic elements, and quite a few exceptions at the margins.
Explanation:
State and explain the three basic properties of element.
Answer :-Some properties of an element can be observed only in a collection of atoms or molecules of the element. These properties include color, density, melting point, boiling point, and thermal and electrical conductivity.
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Answered by - ItzMaster
This worm infects humans by getting into the blood stream. It gets a
warm, safe home in the blood stream. Humans are harmed because they
may go blind or have other complications due to the parasite.
A. Mutualism
B. Commensalism
C. Parasitism
Please please please please please please help me a b c or d
Answer:
the answer for this one is the distance the car is driven
For the reaction 2H2 + O2 --> 2H2O, how many grams of oxygen are needed to react 3 moles of hydrogen?
Answer:
48 grams
Explanation:
The chemical equation for the reaction is the following:
2 H₂ + O₂ → 2 H₂O
That means that 2 moles of H₂ react with 1 mol of O₂ to produce 2 moles of H₂O. We convert the moles of oxygen (O₂) by using the molecular weight (MW) as follows:
MW(O₂) = 16 g/mol x 2 = 32 g/mol
mass of O₂ = 1 mol x 32 g/mol = 32 g
So, we have the following stoichiometric ratio: 32 g O₂/2 moles H₂. We have 3 moles of hydrogen (H₂), so we multiply the moles by the stoichiometric ratio to calculate how many grams are needed:
3 moles H₂ x 32 g O₂/2 moles H₂ = 48 g O₂
Therefore, 48 grams of O₂ are needed to react with 3 moles of H₂.
A ballon is filled with 1.22 L of gas at 286 K is heated until the volume is 2.86 L while the pressure remains constant. What is the temperature of the gas in kelvin?
Answer:
670.45 K
Explanation:
Given that,
Initial volume, V₁ = 1.22 L
Initial temperature, T₁ = 286 K
Final volume, V₂ = 2.86 L
We need to find the new temperature of the gas. The relation between the volume and the temperature is given by :
[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}\\\\T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{2.86\times 286}{1.22}\\\\T_2=670.45\ K[/tex]
So, the new temperature of the gas is equal to 670.45 K.
If the prescribed dosage of milk of magnesia Mg(OH)2 is 3.5 moles, how many grams
would you need to take? Round to the nearest tenth (one digit after the decimal).
A. 92.1 g
B. 204.2g
C. 157.2 g
D. None of the above
Answer:
B
Explanation:
1 mole is equal to 58.31968 grams.
so 3.5 moles equal to answer choice B
How many joules of heat are required to raise the temperature of 320.0 grams of water from 24.2°C to 50.8°C? Heat capacity of water is 4.2 J/g°C.
Answer:
35750.4 Joules
Explanation:
Using the formula as follows;
Q = m × c × ∆T
Where;
Q = amount of heat (joules)
m = mass of substance (g)
c = specific heat capacity (J/g°C)
∆T = change in temperature (°C)
According to the provided information,
mass (m) = 320.0 grams
c = 4.2 J/g°C
∆T = (50.8°C - 24.2°C) = 26.6°C
Q = ?
Using; Q = m × c × ∆T
Q = 320 × 4.2 × 26.6
Q = 35750.4 J
plssss show your work will mark the brainliest
Answer:
135.16 mL
Explanation:
From the question,
Applying,
PV/T = P'V'/T'.................... Equation 1
Where P = Initial pressure of the gas, V = Initial volume of the gas, T = Initial Temperature of the gas in Kelvin, P' = Final pressure of the gas, V' = Final Volume of the gas, T' = Final temperature of the gas in Kelvin.
Make V' the subject of the equation
V' = PVT'/TP'................... Equation 2
Given: P = 600 torr, V = 115 mL, T = 50 °C = (50+273) K = 323 K, T' = 75 °C = (75+273) K = 348 K, P' = 550 torr
Substitute these values into equation 2
V' = (600×115×348)/(323×550)
V' = 24012000/117650
V' = 135.16 mL
The Himalayan balsam plant makes seeds in pods and releases them when it is ready, while the Surinam toad absorbs its eggs into its own back until they are ready to come out. How are the adaptations of the balsam and the toad similar?
A: They are behaviors that allow the plant and the animal to reproduce through shorter life cycles.
B: They are behaviors that protect the plant and the animal from predators.
C: They are life cycle differences that protect the offspring and help them to survive.
D: They are physical characteristics that allow the offspring to survive in cold weather conditions.
Answer:a
Explanation:
Answer:
A
Explanation:
What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to which 0.150 mol of HCl were added
Answer:
pH = 2.21
Explanation:
Hello there!
In this case, according to the reaction between NaF and HCl as the latter is added to the buffer:
[tex]NaF+HCl\rightarrow NaCl+HF[/tex]
It is possible for us to see how more HF is formed as HCl is added and therefore, the capacity of this HF/NaF-buffer is diminished as it turns acid. Therefore, it turns out feasible for us to calculate the consumed moles of NaF and the produced moles of HF due to the change in moles induced by HCl:
[tex]n_{HF}^{new}=0.300mol+0.150mol=0.450mol\\\\n_{NaF}^{new}=0.200mol-0.150mol=0.050mol[/tex]
Next, we calculate the resulting concentrations to further apply the Henderson-Hasselbach equation:
[tex][HF]=\frac{0.450mol}{1.0L} =0.450M[/tex]
[tex][NaF]=\frac{0.050mol}{1.0L} =0.050M[/tex]
Now, calculated the pKa of HF:
[tex]pKa=-log(6.8x10^{-4})=3.17[/tex]
We can proceed to the HH equation:
[tex]pH=pKa+log(\frac{[NaF]}{[HF]} )\\\\pH=3.17+log(\frac{0.05M}{0.45M} )\\\\pH=2.21[/tex]
Best regards!
pH is the measure of the hydrogen or hydronium ion concentration in an aqueous solution. The pH of the buffer made with HF and NaF is 2.21.
What is pH?pH is the measure of the acidic or the basic content in a solution that can be given by the hydrogen or the hydroxide concentration.
The reaction can be shown as,
[tex]\rm NaF + HCl \rightarrow NaCl + HF[/tex]
New moles of HF is 0.300 + 0.150 = 0.450 moles and new moles of NaF is 0.200 - 0.150 = 0.050 moles.
The concentration is calculated by the Henderson-Hasselbach equation:
[tex]\rm [HF] = \dfrac{0.450 \;\rm mol}{1.0 \;\rm L} = 0.450 \;\rm M[/tex]
And,
[tex]\rm [NaF] = \dfrac{0.050\;\rm mol}{1.0 \;\rm L} = 0.050\;\rm M[/tex]
pKa of hydrogen fluoride is calculated as:
[tex]\rm pKa = - log (6.8 \times 10^{-4}) = 3.17[/tex]
The pH from the pKa can be calculated as:
[tex]\begin{aligned}\rm pH &=\rm pKa + log (\dfrac{[NaF]}{[HF]})\\\\&= 3.17 + \rm log (\dfrac{0.05}{0.45})\\\\&= 2.21\end{aligned}[/tex]
Therefore, the pH is 2.21.
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Question 16 of 33
Which sublevels contain valence electrons in an atom of nitrogen (N)?
The Periodic Table
A. 2s and 2p
B. 2s only
C. 3p only
O D. 2s and 3p
what is the name for a change in the enviorment that causes an organism to change it's activity
PLEASE HELP BY TODAYYYY!!!
A, brain
B,Response
C, Parasite
D,stimulus
Answer: it’s D
Explanation:an event that provokes a specific functional response in an organ or tissue of an organism is called as stimulus
hope it helps
What reaction would you expect chromium to have with water
Answer: It does not react with water, but reacts with most acids. It combines with oxygen at room temperature to form chromium oxide. Chromium oxide forms a thin layer on the surface of the metal, protecting it from further corrosion (rusting).
Explanation:
which scale is most precise?
which scale is most accurate?
The natural pH of rain water is
acidic
neutral
basic
Please help
Answer:
between 5.0 and 5.5
Explanation:
acidic
50 POINTS
Gizmos Moles Activity - chemistry
can someone please help me out
there is how I would answer it.
What volume (in liters, at 253 K and 6.54 atm) of chlorine gas is required to react with 7.89 g of P? 2P(s) + 5Cl2(g) → 5PCl5(s)
Answer:
7.89 grams of phosphorus reacts with 45.15 grams of chlorine
Explanation:
For reacting with 2 mole of P react with 5 mole of Cl2 gas
Molecular weight of phosphorus = 30.97
Molecular weight of 2 mole of phosphorus = 2 * 30.97 = 61.94 grams
Molecular weight of Chlorine molecule = 70.9 grams
Weight of 5 moles of Chlorine molecule = 5 * 70.9 grams = 354.5 grams
61.94 grams of phosphorus reacts with 354.5 grams of chlorine
7.89 grams of phosphorus reacts with 354.5/61.94 * 7.89 grams of chlorine
7.89 grams of phosphorus reacts with 45.15 grams of chlorine
Heat from the sun is absorbed by the _____?
Answer:
earth
Explanation:
What is the volume, in liters, of 2.75 grams of fluorine gas at 35.0°C and 4.55 atm pressure?
The volume (in litres) of 2.75 g of fluorine gas at 35 °C and 4.55 atm is 0.402 L
How to determine the mole of fluorine gasMass of F₂ = 2.75 gMolar mass of F₂ = 2 × 19 = 38 g/mol Mole of F₂ =?
Mole = mass / molar mass
Mole of F₂ = 2.75 / 38
Mole of F₂ = 0.0724 mole
How to determine the volume Temperature (T) = 35 °C = 35 + 273 = 308 KPressure (P) = 4.55 atmGas constant (R) = 0.0821 atm.L/Kmol Number of mole (n) = 0.0724 moleVolume (V) =?Using the ideal gas equation, the volume of the gas can be obtained as follow:
PV = nRT
Divide both side by P
V = nRT / P
V = ( 0.0724 × 0.0821 × 308) / 4.55
V = 0.402 L
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The planet Mercury takes 176 days to do one spin around its pole. Compared to the Earth,
would the Sun appear to move more quickly across Mercury's sky or more slowly? Why?
Thank you who ever help me
Answer:
The sun would appear to move more slowly across Mercury's sky.
Explanation:
This is because, the time it takes to do one spin or revolution on Mercury is 176 days (which is its period), whereas, the time it takes to do one spin or revolution on the Earth is 1 day.
Since the angular speed ω = 2π/T where T = period
So on Mercury, T' = 176days = 176 days × 24 hr/day × 60 min/hr × 60 s/min = 15,206,400 s
So, ω' = 2π/T'
= 2π/15,206,400 s
= 4.132 × 10⁻⁷ rad/s
So on Earth, T" = 1 day = 1 day × 24 hr/day × 60 min/hr × 60 s/min = 86,400 s
So, ω" = 2π/T"
= 2π/86,400 s
= 7.272 × 10⁻⁵ rad/s
Since ω' = 4.132 × 10⁻⁷ rad/s << ω" = 7.272 × 10⁻⁵ rad/s, the sun would appear to move more slowly across Mercury's sky.
