Answer:
P-waves (primary or compressional waves) are longitudinal or compression waves, able to move through solids, liquids, and gases at speeds ranging between 300-5,000 metres per second. As they travel through rock, they move particles back and forth in the same direction that the wave is moving
Explanation:
Which of the following is considered parasitism?
a
A hummingbird pollinating a flower.
b
A flea is sucking the blood from a dog.
c
A spider builds its web in a tree.
d
A bug hitches a ride on your backpack during a hike.
3. Convert 273.0 g of lead into moles.
Answer:
1.3175675675675604
Explanation:
does this need to be rounded?
HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP
Answer:
but what is your question? it's just like the moon going around earth while earth along with all the other planets revolve around the sun
Explanation:
PLEASE HELP!!!!!!!! I DO NOT UNDERSTAND
Answer:
A, B, C
Explanation:
A gas has a solubility of 1.46 g L at 8.00 atm of pressure. What is the pressure of a sample of the same gas that
contains 2.7 g/L of the dissolved gas?
Answer:
[tex]14.8\ \text{atm}[/tex]
Explanation:
[tex]C_1[/tex] = Initial concentration = 1.46 g/L
[tex]C_2[/tex] = Final concentration = 2.7 g/L
[tex]P_1[/tex] = Initial pressure = 8 atm
[tex]P_2[/tex] = Final pressure
From Henry's law we have the relation
[tex]\dfrac{C_2}{C_1}=\dfrac{P_2}{P_1}\\\Rightarrow P_2=\dfrac{C_2}{C_1}P_1\\\Rightarrow P_2=\dfrac{2.7}{1.46}\times 8\\\Rightarrow P_2=14.8\ \text{atm}[/tex]
The pressure of a sample of the same gas at the required concentration is [tex]14.8\ \text{atm}[/tex].
What type of decay does Am-241 undergo to become Np-237?
a. Alpha decay
c. Positron emission
b. Beta decay
d. Electron capture
The type of decay that Am-241 undergoes to become Np-237 is alpha decay. The correct option is a.
What is alpha decay?Alpha decay is a type of decay or transformation in which a nucleus emits an alpha particle and change into different atomic nuclei. The atomic number reduces by 2 and the mass is reduced by 4.
Am-241 is an isotope of the chemical element americium. It is a radioactive element and its radioactive decay period is 432.2 years. It is used in the testing of machinery.
When the nucleus of Am changes or emits a radioactive particle. It converts into Np-237. The process is called alpha decay. The atomic mass is reduced by four, and the 241 converts into 237, which become neptunium.
Thus, the correct option is a. Alpha decay.
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what is on the left side ?
Answer:
reactants
Explanation:
A chemical reaction can theoretically produce 137.5 grams of product, but it actually produced 112.9 grams. Which is the percent yield for this reaction? AKS 4f
Answer:
Explanation:
Zoom in we can't see it dude
which process helps guarantee that a species continues to involve over hundreds of years?
A. growth
B. nutrition
C. reproduction
Answer:
C. reproduction
Explanation:
Which of the following is the conjugate base of HPO42-?
Answer:
A. PO4^3-
Explanation:
took the quiz on a pex
The conjugate base of HPO₄²⁻ is PO₄³⁻. Therefore, option (A) is correct.
What is the Bronsted-Lowry concept?The Bronsted-Lowry concept can be explained as an acid-base reaction where base and acid react with each other and by an exchange of proton acid, forms its conjugate base and the base generates its conjugate acid.
The Bronsted-Lowry theory is an extended version of Arrhenius's theory of acid-base. According to this concept, acid can be defined as a substance that donates a hydrogen ion or a proton and produces its conjugate base and the base can be defined as a substance that accepts a proton and creates its conjugate acid.
Bronsted-Lowry acid in the dissociation form can be represented as:
Acid ⇄ Conjugate base + H⁺
The conjugate base of Bronsted-Lowry acid HPO₄²⁻ can be represented as follows:
HPO₄²⁻ ⇄ PO₄³⁻ + H⁺
Therefore, PO₄³⁻ is the conjugate base of the Bronsted-Lowry acid HPO₄²⁻.
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I NEED HELP PLS PLS PLS
La leche se considera un alimento basico por su elevado contenido de nutrientes su densidad es de 1,4g/ml. Si se hace una compra de 7 bolsas de leche cada una con un volumen de 900m cual es la masa total de la leche expresada en kilogramos?
Answer:
8.82 kg es la masa total de leche
Explanation:
Consideraremos que el volumen de cada bolsa de leche es de 900 mL.
Sabiendo que tenemos en total 7 bolsas, el volumen final en litros que tenemos disponible es de:
900 mL . 7 = 6300 mL
Utilizando la densidad podemos calcular la masa de leche que tenemos en el total de las 7 bolsas
Densidad = masa / volumen
Densidad . volumen = masa → 1.4 g/mL . 6300 mL = 8820 g
Convertimos la masa de gramos a kg
8820 g . 1 kg /1000g = 8.82 kg
a container of gas has a pressure of 1.45 atm at a temperature of 52 degrees celsius, if the pressure increases to 4.2 atm what would be the final temperature of the volume is held constant?
Answer:
941 K (668°C)
Explanation:
We have the following data:
Initial pressure : P1 = 1.45 atm
Initial temperature: T1 = 52°C + 273 = 325 K
Final pressure: P2 = 4.2 atm
Final temperature: T2 = ?
The relation between pressure and temperature for a gas at constant volume is given by Gay-Lussac's law:
P1/T1 = P2/T2
That means that the pressure is directly proportional to the absolute temperature (in K). So, we calculate T2 from the equation:
T2 = P2 x T1/P1 = 4.2 atm x (325 K/1.45 atm) = 941 K
Therefore, the final temperature would be 941 K (668°C). This is consistent with the law, that states that if the pressure increase, the temperature will be increased.
Find the pH of a solution containing [H+]=0.00003
Answer:
Acid
Explanation:
because acid has a pH of6_1
For the autoionization of water at 25°C, H2O(l) <---> H+ (aq) + OH-(aq)
Kw is 1.0 X 10^-14. What is (Delta Gº) for the process?
Answer:
ΔG° = 80 Kj/mole
Explanation:
ΔG° = -R·T·ln(Kw)
R = 0.008314 Kj/mol·K
T = 25°C = 298K
Kw = 1 x 10⁻¹⁴
ΔG° = -R·T·ln(Kw) -(0.08314Kj/mol·K)(298K)ln(1 x 10⁻¹⁴)
= -(0.008314)(298)(-32.2)Kj/mole
= 79.78Kj/mole ≈ 80Kj/mole (1 sig.-fig.)
The change in free energy for the autoionization of water at 25°C is -79.9 KJ
Using the formula;
ΔG = -RTlnK
ΔG = change in free energy = ?
R = gas constant = 8.314 J/K/mol
T = temperature = 298 K
K = equilibrium constant = 1.0 X 10^-14
Substituting into the given formula as;
ΔG = - (8.314 J/K/mol × 298 K × ln(1.0 X 10^-14))
ΔG = -7.99 × 10^4 J/mol or -79.9 KJ/mol
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A clownfish uses a sea anemone as a safe place to live. While living there, the clownfish lures in food for the anemone. This is an example of what type of relationship?
What is the atomic number of the following element??
Answer:
91
Explanation:
Form of energy knows as light energy
4) How many atoms are present in a sample of oxygen, O2 with 12.222 moles?
Answer:
two oxygen atoms
A mixture of Oxygen and Hydrogen occupies a pressure of 101.3kPa. The pressure of Hydrogen is 56kpa. Calculate the pressure of oxygen.
Answer:
45.3 KPa
Explanation:
From the question given above, the following data were obtained:
Total pressure (Pₜ) = 101.3 KPa
Pressure of Hydrogen (Pₕ) = 56 KPa
Pressure of Oxygen (Pₒ) =?
The pressure of oxygen in the mixture can be obtained as follow:
Pₜ = Pₕ + Pₒ
101.3 = 56 + Pₒ
Collect like terms
101.3 – 56 = Pₒ
Pₒ = 45.3 KPa
Thus, the pressure of oxygen in the mixture is 45.3 KPa
The equation below shows the decomposition of lead nitrate. How many molecules of PbO are produced when 11.5 g NO2 is formed?
2Pb(NO3 )2 (s) → 2PbO(s) + 4NO2 (g) + O2 (g)
Please helppppppppppppppppppp
50 ppoints
Answer:
I can’t see the whole page
Explanation:
WDYT a mixture is? Please help
Answer:
A mixture is when two substances are physically combined and can be taken apart.
Explanation:
my words
I can be formed into a sheet, I am high in luster, and am a very good conductor. I must be a ...
a
metal
b
nonmetal
c
metalloid
d
noble gas
Answer: metal
Explanation:
The products of a chemical reaction are chemically different substances than the reactants of a chemical reaction.
True or false?
this statement is true
Answer:
Hope it helps u
Calculate heat energy
Answer:
The equation for calculating heat energy is q=mCpΔT, where q is the heat variable, m is the mass of the object, Cp is the specific heat constant and ΔT is the temperature change.
Explanation:
connect them, dont guess please + 23 points
Answer:
Astronaut- highly trained individual for space travel
Payload Specialist- partnering scientist, journalist, or political guest.
Space Sickness- nausea, vomiting, and upset stomach.
Muscle Atrophy- the result of microgravity.
Johnson Space Center- training facility for U.S. astronauts.
What is the meaning of the acceleration value 9.8 m/s?????
Answer:
The value 9.8 m/s^2 is the average acceleration of a falling object due to the force of gravity on Earth. The letter g represents this value the formula v=gt. With this constant and formula, the speed of an object is calculated at the time t in seconds after it is dropped.
All objects fall at the same rate of speed due to gravity, regardless of their weight. If a small grain of sand and a bowling ball are dropped at the same time, both hit the floor at the same time. The value of g varies by one's location on the planet, ranging from 9.782 m/s^2 in the Panama Canal Zone to 9.832 m/s^2 at the Noth Pole
Explanation:
Which of the following statements is true? Running an electric current through a magnet can create a magnetic field, Electrons are found in the nucleus of an atom, The strength of a magnetic field increases with distance, Electric engines change electricity into magnestism
Answer:
running an electric current through a magnet can create a magnetic field
How many mililiters are in 0.5000 liters?
Question 6 options:
50 ml
500 ml
0.5000 ml
5,000 ml