Answers
Answer: ummm what is this cause I don't get it either
Explanation:
i need help with this to lol
Related Questions
how would a map of a galaxy be different from a map of a city?
Answers
Answer:
A map of the galaxy would be a lot bigger and have a lot more names such as planets, stars, etc. While a city would be more basic than a whole galaxy.
How many copies of DNA do haploid cells have
Answers
Answer:
2 lol
Explanation:
Why does a DNA fingerprint require millions of copies of each DNA fragment
Answers
Answer:
Because it can identify a person.
A DNA fingerprint is a piece of DNA so distinct that it can prove a person's identity. These distinct areas can take on many different forms, but each form is unique to any one individual.
PCR allows the amplification of a single copy of DNA into millions of copies. However this technique requires that the DNA of interest already be of a known sequence in order to design primers that will specifically hybridize to the target DNA.
It is important as:
It's used as evidence in courts, to identify bodies, track down blood relatives, and to look for cures for disease.
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1.Which type of text structure describes events in sequential order? A.sequence B.Cause and Effect. C. Problem And Solution. D. Compare and Contrast
2.This type of writing considers similarities and differences
A.Discripsion B.Compare and Contrast C. Sequence. D.Cause and Effect
3.in this type of writing,the reader will see words/phrases such as cause,as a result of,and due to.
A.Cause and Effect
B.Promlem and Solution
C.Order And Sequence
D.Compare And Contrast
Answers
Answer:
1 would be a. sequence
2 would be b. compare and contrast
3 would be a. cause and effect
What happens when a chemical reaction reaches equilibrium
Answers
Helpppppppppppppppppppppppp
Answers
Answer:
C
Explanation:
all of the fish, bacteria, and mammals that live in a lake
hope this helps!
TICLA ruuis SLCLLICU 10115CI.
Question 3 (1 point)
Which option correctly ranks the states of matter from slowest to fastest particle
speed.
gas, liquid, solid
solid, liquid, gas
solid, gas, liquid
gas, solid, liquid
Answers
UGRENT! Please help showing all work
Answers
Answer:
a. The limiting reactant is Ca(OH)₂
b. The theoretical yield of CaCl₂ is approximately 621.488 grams
c. The percentage yield of CaCl₂ is approximately 47.06%
Explanation:
a. The given chemical reaction is presented as follows;
Ca(OH)₂ + 2HCl → CaCl₂ + 2H₂O
Therefore;
One mole of Ca(OH)₂ reacts with two moles of HCl to produce one mole of CaCl₂ and two moles of water H₂O
The mass of HCl in an experiment, m₁ = 229.70 g
The mass of Ca(OH)₂ in an experiment, m₂ = 207.48 g
The molar mass of HCl, MM₁ = 36.458 g/mol
The molar mass of Ca(OH)₂, MM₂ =74.093 g/mol
The number of moles of HCl, present, n₁ = m₁/MM₁
∴ n₁ = m₁/MM₁ = 229.70 g/(36.458 g/mol) ≈ 6.3 moles
The number of moles of Ca(OH)₂, present, n₂ = m₂/MM₂
∴ n₂ = m₂/MM₂ = 207.48 g/(74.093 g/mol) ≈ 2.8 moles
The number of moles of Ca(OH)₂, present, n₂ = 2.8 moles
According the chemical reaction equation the number of moles of HCl the 2.8 moles of Ca(OH)₂ will react with, = 2.8 × 2 moles = 5.6 moles of HCl
Therefore, there is an excess HCl in the reaction and Ca(OH)₂ is the limiting reactant
b. According the chemical reaction equation the number of moles of CaCl₂ produced in he reaction by the 2.8 moles of Ca(OH)₂ = 2.8 × 2 moles = 5.6 moles of CaCl₂
The molar mass of CaCl₂ = 110.98 g/mol
The mass of the 5.6 moles of CaCl₂ = 5.6 moles × 110.98 g/mol ≈ 621.488 grams
The theoretical yield of CaCl₂ ≈ 621.488 grams
c. Given that the actual mass of CaCl₂ produced = 292.5 grams, we have;
The percentage yield of CaCl₂ = The actual yield/(The theoretical yield) × 100
∴ The percentage yield of CaCl₂ = (292.5 g)/(621.488 g) × 100 ≈ 47.0644646397%
The percentage yield of CaCl₂ ≈ 47.06%.
Which particles make up most of the mass of an atom?
Answers
i think Neuterons i am right
Answer:
I do not know srry
Explanation:
3. You believe that water boils at 212 degrees Fahrenheit (100 degrees Celsius). Write the numberon the scale from best to worst.
1. Your cousin said that he tested the temperature of water boiling and found that it was 100°C.
2. Most people you know believe that water boils at 100°C.
3. You used a thermometer to measure the temperature at which water boiled. You repeated the experiment 3 times. Each time the thermometer read 100°C.
4. You read an article in a science journal from 50 different labs around the world that have tested the temperature of water and found that it boils at 100°C in every location.
Answers
You come across an article in a scientific journal from 50 different laboratories around the globe that measured the boiling point of water and discovered that it is 100°C everywhere.
What transpires when water is heated to 100 C (This is 212 F)?Water turns into gas around 212°F (100°C), which is the temperature at which it begins to boil (water vapor). Pressure affects the melting/freezing and boiling points. Water's boiling point changes when air pressure changes. The boiling point decreases with increasing altitude or decreasing pressure.
At 212 degrees Fahrenheit, does water boil, or at 100 degrees?Water has a freezing point of 32 degrees Fahrenheit and a boiling point of 212 degrees Fahrenheit on the Fahrenheit scale.
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What is the molarity of a solution made by diluting 0.025L of 6.0 M HCl until
the final volume of the solution is 1.75 L?
Answers
Answer:
Explanation:
Use the dilution equation: M1V1 = M2V2
M1 = 6.0 M
V1 = 0.025 L
M2 = ?
V2 = 1.75 L
(6.0 M)(0.025 L) = M2(1.75 L)
Solve for M2 --> M2 = 0.086 M HCl
What is the correct order for the development of the atomic model
Answers
Answer: I think it's A. C-A-D-B
Explanation:
John Dalton's theory was publicized in 1803
J.J Thomson's theory was publicized in 1904
Ernest Rutherford's theory was publicized in 1911
And Neil Bohr's was publicized in 1926
¿Cuántos gramos de dicloruro de manganeso se obtienen cuando reaccionan 7,5 g de ácido clorhídrico? MnO2 + 4 HCl = Mn Cl2 + Cl2 + 2 H2O *
Answers
Answer:
6.6 g
Explanation:
La ecuación de la reacción es;
MnO2 + 4 HCl -------> MnCl2 + Cl2 + 2H2O
Número de moles de HCl que reaccionan = 7.5g / 36.5 g / mol = 0.21 moles
Dado que;
4 moles de HCl producen 1 mol de MnCl2
0,21 moles de HCl producen 0,21 * 1/4 = 0,0525 moles de MnCl2.
Masa de MnCl2 = 125,844 g / mol * 0,0525 moles = 6.6 g
Please help ASAP!! I’m stuck!!
Which statement is true based on the formula?
6CO2 + 6H2O —> C6H12O6
+ 6O2
1. The mass of carbon dioxide plus water is equal to the mass of sugar plus oxygen
2. The mass of carbon dioxide plus water is less than the mass of sugar plus oxygen
3. The mass of carbon dioxide plus water is greater than the mass of sugar plus oxygen
Answers
Answer:
The answer of this question is 3
Plz answer will give BRAINLIEST! Promise! Question is in picture! Due in 5 minutes!!
Answers
Answer:
try A
Explanation:
why are metals poor choices for coffee mugs?
Answers
Answer:
They will stay too hot.
Explanation:
You would burn yourself on the mug and your drink would be too hot to drink.
What is the rate of effusion of Xenon (Xe) gas if the rate of Chlorine (Cl) gas escaping
through a fluorescent light fixture is 2.5 L/min?
Answers
Is temperature and pressure directly proportional or inversely proportional?
A. Inversely proportional
B. Directly proportional
Answers
What happened during the fusion reaction shown?
Answers
Answer:
the answer to this question B. Two H nuclei that fused into one He necleus
Explanation:
Two hydrogen atoms fused to one helium molecule, hence option B is correct.
What is fusion?Fusion is defined as a process in which two or more atomic nuclei unite to create new atomic and subatomic particles. Heat, which is produced when two atoms fuse, is the key to generating energy. Similar to how nuclear fission produces energy, this heat can be utilized to warm water, produce steam, and turn turbines to produce electricity.
In the core of the Sun, hydrogen is being converted to helium. This phenomenon is known as nuclear fusion. Fusion is what powers both the sun and the stars. One example of this kind of reaction is when two hydrogen atoms combine to form a helium atom. During the process, a portion of the hydrogen's mass is converted into energy.
Thus, two hydrogen atoms fused to one helium molecule, hence option B is correct.
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The distance between the Grand Canyon and Mt. Rushmore is approximately 1.147 km. What is this in meters?
Answers
Answer:
1147
Explanation:
you multiply the length by 1000
2) Liquid soap is dissolve in water to make a soap solution. Why is this
solution called a mixture?
Answers
Explanation:
Soap solution is called a mixture because you're combining a ratio of liquid soap and water to make a mixture.
Solar energy converts ___ into either ___ energy or electrical energy.
electromagnetic, thermal
electromagnetic, potential
thermal, nuclear
chemical, thermal
Answers
Answer:
Hey mate....
Explanation:
This is ur answer.....
Solar radiation can be converted either into thermal energy (heat) or into electrical energy.Hope it helps!
mark me brainliest plz......
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Which type of galaxy contains mostly new stars because it has lots
of dust and gas
Answers
i need help!! i need to make it like 3:2
Answers
Answer:
use visual studio code and put in this print{3:2}-1
Explanation:
1
What is the mass of 0.328 mol of CO2?
Answers
Answer:
use this conversation units to help you hope it helpsAnalyzing models compare an atom’s structure to a ladder. Identify one way in which ladder is not a good model from the atom.
Answers
Answer:
Climbing a ladder assumes that you would touch/use each step only once. Electrons will take one layer that is empty first, and previous layers or "steps" will continue being filled with additional electrons only when every other layer is occupied by, at least, one electron.
Explanation:
A good analogy is what passengers in a bus do. Everyone tries to sit alone first and only when every pair of seats has a person already seated, people will use them as well, sitting next to each other.
I need help asap its due today!!!!!
Use the dichotomous key to answer the question. Of the following characteristics, which was used to classify insects?
A. presence of a head
B. shape of wings
C. number of wings
D. shape of abdomen
Answers
Answer:
B. shape of wings
Explanation:
Insect, (class Insecta or Hexapoda), any member of the largest class of the phylum Arthropoda, which is itself the largest of the animal phyla. Insects have segmented bodies, jointed legs, and external skeletons (exoskeletons).
Higher classification: Hexapoda
PLEASE HELP ME. REAL ANSWERS ONLY PLZ
Answers
Answer:
Please make it full I'm not seeing it
How do atmospheric updrafts affect clouds?
Answers
Answer:
Updrafts characterize a storm's early development, during which warm air rises to the level where condensation begins and precipitation starts to develop. In a mature storm, updrafts are present alongside downdrafts caused by cooling and by falling precipitation.
Hope it helps
Have a great Day : P
URGENT
What is the total volume of a lead can if it has a mass of 800g.
Answers
Answer:
750
Explanation: