Answers
Answer:
g3gegsgehshhwwjwuwuwu2euyeeyeyyy
Answer:
helium formula He
Ammonia formula NH3
methane formula CH₄
chlorine formula Cl-
Explanation:
Related Questions
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?
Answers
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?
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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].
In an experiment, how many variables should you change at a time? And why?
Answers
Answer:
it should test one variable at a time.
Explanation: because you will not be able to tell which variable is responsible for the observed results.
aerobic cellular respiration requires an adequate supply of
Answers
Answer:
oxygen ?
Explanation:
not sure but I think so
Aerobic cellular respiration requires an adequate supply of oxygen. In the presence of oxygen, the cell completely oxidised the glucose molecule to form ATP.
What is cellular respiration?In cellular respiration, the cell takes glucose and breaks it down to form energy. Cellular respiration is of two types: aerobic respiration and anaerobic respiration.
In aerobic respiration, the cell requires oxygen. Due to the presence of oxygen, the complete oxidation of glucose takes place. Glucose is converted into pyruvic acid and then enters the Krebs cycle and the electron transport chain to make ATP.
In the aerobic cellular respiration process, the maximum amount of ATP is derived. In anaerobic respiration, the cell performs respiration without the presence of oxygen. An example is glycolysis.
In this glycolysis process, the complete oxidation of glucose does not take place. In the absence of oxygen from pyruvate, lactic acid and ethanol are produced. This is called fermentation.
Hence, for aerobic cellular respiration, oxygen is required.
To learn more about cellular expression, refer to the following link:
https://brainly.com/question/3928558
#SPJ6
4) How many atoms are present in a sample of oxygen, O2 with 12.222 moles?
Answers
Answer:
two oxygen atoms
WDYT a mixture is? Please help
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Answer:
A mixture is when two substances are physically combined and can be taken apart.
Explanation:
my words
which process helps guarantee that a species continues to involve over hundreds of years?
A. growth
B. nutrition
C. reproduction
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Answer:
C. reproduction
Explanation:
connect them, dont guess please + 23 points
Answers
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.
How many mililiters are in 0.5000 liters?
Question 6 options:
50 ml
500 ml
0.5000 ml
5,000 ml
Answers
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
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Answer:
running an electric current through a magnet can create a magnetic field
In a lab, a scientist calculate he should produce 12.3 grams of product in his experiment. When he is finished collecting his product it weighs 11.0 grams. What is his percent yield?
Answers
Answer:
Option D.
Explanation:
Percentage yield = Actual yield / Theoretical yield * 100%
Actual yield = 11.0 grams
Theoretical yield = 12.3 grams
Percentage yield = 11.0 / 12.3 * 100
Percentage yield = 89.43%
What is the atomic number of the following element??
Answers
Answer:
91
Explanation:
HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP
Answers
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:
A block of concrete has a mass of 5100 g and a volume of 2500 cm3 . Calculate the density.
Answers
Answer:
2.04 g/cm3
Explanation:
Density = mass ÷ volume
= 5100 ÷ 2500
=2.04 g/cm3
During the daytime, we can see things because the sun is giving off
heat energy
light energy
sound energy
electrical energy
Answers
Answer:
light energy
.................
Answer:
light energy
Explanation:
heat does not effect how we see
the sun does not have sound
electrical energy does not effect how we see
Find the pH of a solution containing [H+]=0.00003
Answers
Answer:
Acid
Explanation:
because acid has a pH of6_1
Which statement best describes the polarity of the molecule Sil4?
Answers
Answer:
I dont a picture
Explanation:
but the answer is 24
A mixture of Oxygen and Hydrogen occupies a pressure of 101.3kPa. The pressure of Hydrogen is 56kpa. Calculate the pressure of oxygen.
Answers
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
Form of energy knows as light energy
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help :) plz :) ........
Answers
Answer:
D. 4:3
Explanation:
The mole ratio is simply the coefficients in a balanced chemical reaction and their relation to each other. For example, the mole ratio between Al and [tex]Al_{2}O_{3}[/tex] is 2:1, and the ratio between [tex]O_{2}[/tex] and [tex]Al_{2}O_{3}[/tex] is 3:2.
Calculate heat energy
Answers
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:
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)
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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?
Answers
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
2. Have you ever seen a natural event that surprised
you? Why was it surprising?
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Answer:
I have seen many lightning storms before. However, one of the most surprising ones was when I was at my house. It was around midnight when I awoke from the sound of lightning in the distance. I was also half awake so this could be another reason this was the most surprising, but lightning struck near my area. i could see the light through my curtains and the sound was loud enough to awake everyone in my house, even the deep sleepers. I practically jumped out of bed.
3. Convert 273.0 g of lead into moles.
Answers
Answer:
1.3175675675675604
Explanation:
does this need to be rounded?
I NEED HELP PLS PLS PLS
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hey pleaseeeeeeeeeeeeeeeeeeeeeeee
Answers
Answer: B
Explanation:
Answer:
b
Explanation:
Please help I’ll even give you brainliet
What is the molecular formula for a compound that is 34.31% sodium, 17.93% carbon, 47.76% oxygen and has a molar mass of 134.00g?
Answers
Answer: Na2C2O4 probably sodium oxalate
Explanation: assume you have 100 g substance.
Mass of Na is m(Na) = 34.31 g, m(C) = 17.93 g and m(O) = 47.76 g.
Calculate moles n(Na) = 34.31 g/22.99 g/mol= 1.49 mol.
For C n(C) = 1.49 mol and n(O) = 2.985. You divide all by 1.49 you
Get n(Na) : n(C) : n(O) = 1:1:2 M(NaCO2) = 67 g/mol.
Divide 134:67 = 2. You get formula Na2C2O4
What is the meaning of the acceleration value 9.8 m/s?????
Answers
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:
PLEASE HELP!!!!!!!! I DO NOT UNDERSTAND
Answers
Answer:
A, B, C
Explanation:
Explanation