PLZZZZZZZZZZZZ hel asap before CST: 12pm thank you i need help on all of them thank you!!!!1
Answers
Answer:?
Explanation: there is not enough infomation
Related Questions
Scientists can use many strategies during investigations, including heldwork, surveys,
models, and experiments. Which of these phrases best describes an experiment?
A mathematical analysis of data
B. observation of animals in their natural world
Ci collection of data from an uncontrolled environment for comparative purposes
D. procedure with controlled conditions and test and outcome variables
Answers
Answer:
D
Explanation:
Question: Scientists can use many strategies during investigations, including heldwork, surveys,
models, and experiments. Which of these phrases best describes an experiment?
A mathematical analysis of data
B. observation of animals in their natural world
Ci collection of data from an uncontrolled environment for comparative purposes
D. procedure with controlled conditions and test and outcome variables
Use the chart to answer the following question. I Nuclear energy does not produce dangerous waste products. Nuclear energy is significantly cheaper then production of energy from fossil II fuels. Nuclear energy does not produce greenhouse gases that contribute to global III warming Nuclear energy generates radioactive waste products that can be safely, IV cheaply, and easily stored, Which statements are claims that are supported by accurate evidence related to nuclear power O A. I, II, and III O B. I, III, and IV O C. II, III, and IV O D. I, II, and IV
Answers
Answer:
Nuclear energy is significantly cheaper then production of energy from fossil II fuels
Explanation:
Choose any electromagnetic wave we have discussed and write ONE PARAGRAPH telling me about the uses/benefits of that electromagnetic wave.
Answers
The noble gases are unreactive and stable. Which of the following explains why this is true?
They have 8 electrons in their outer shell (except for Helium).
They exist on their own without other elements.
They have more electrons than other elements.
They each have no electrons.
EXPLAIN
Answers
Answer:
The answer is A. They have 8 electrons in their outer shell (except for Helium).
Explanation: This is because of the number of valence electrons( the amount of electrons in their outer shell). For a reaction to take place, a transfer of electrons must take place. If their outer shell is already full, they don't have any tendencies to react.
Noble gases are unreactive gases and are stable. This is because they have complete octet or eight electrons in their outer shells. Thus, option A is accurate.
What are noble gases?Noble gases are the gases of the periodic table that do not show any reaction with other elements and have great stability and low reaction rates.
They are special as their outermost orbit is completely filled to complete their octet rule so they lack any free electron to take part in a chemical reaction.
Therefore, option A. noble gases have eight electrons in their outermost shell.
Learn more about noble gases here:
https://brainly.com/question/9099916
#SPJ2
Soda pop is carbonated with CO2. Mark puts one bottle of soda pop in the refrigerator and leaves the other out in the hot sunlight. After one hour, he opens both bottles. Which bottle will likely have more fizzing and bubbles? Why?
Answers
How is the formation of metamorphic rocks different from that of igneous rocks even though both can take place underground?
Answers
Answer:
Igneous rocks are formed when magma (or molten rocks) have cooled down and solidified.Metamorphic rocks are formed when rocks change their original shape and form due to intense heat or pressure.
Explanation:
Thx for the points mrk me brainliest plz
Answer:
Explanation:
In order to create metamorphic rock, it is vital that the existing rock remain solid and not melt. If there is too much heat or pressure, the rock will melt and become magma. This will result in the formation of an igneous rock, not a metamorphic rock.
link:
https://www.nationalgeographic.org/encyclopedia/metamorphic-rocks/#:~:text=In%20order%20to%20create%20metamorphic,rock%2C%20not%20a%20metamorphic%20rock.
Scientists often repeat experiments multiple times.
Why is this important?
A.
Repeating an experiment helps to verify the results.
B.
Repeating an experiment turns a hypothesis into a theory.
C.
Repeating an experiment gives scientists something to do while they think of new hypotheses.
D.
Repeating an experiment allows scientists to test different variables.
Answers
Answer:
The answer is A.
Explanation:
Scientists repeat the same experiments because they wanna try to see if they keep getting the same result. When a scientific investigation is repeated, this is called replication. Replication is important in science so scientists can “check their work.” The result of an experiment is not likely to be well accepted unless the investigation is repeated many times and the same result is always obtained.
question #5: corals are sensitive to temperature . if temperatures are raised , it will cause the coral to bleach . what does bleach mean ? And can corals recover ?
Answers
Answer:
It means the coral will turn white and corals may recover (depending on the species) by soaking up ocean surface heat.
WILL MARK THE BRAINLEST
Answers
Answer:
a. Hh, hh
b. hh
c. 50%
d. 50%
Low-pressure air is associated with which of the following?
a. Cold, Dry, High Density, Good Weather
b. Warm, Moist, Humid, Low Density, Good Weather
c. Cold, Dry, High Density, Bad Weather
d. Warm, Moist, Humid, Low Density, Bad Weather
Answers
Warm, humid, low density, good weather
Students in a chemistry class added 5 g of Zinc (Zn) to 50 g of hydrochloric acid (HCl). A chemical reaction occurred that produced zinc chloride (ZnCl2) and 6 g of hydrogen gas (H2).
Zn+ 2HCl → ZnCl2+H2
What is the mass of the zinc chloride?
Answers
Answer: 11 g
Explanation:
Zn + 2HCl → ZnCl₂ + H₂
Number of moles of Zn:
Number of moles = 5 g / 65.38 g/mol
Number of moles = 0.08 mol
Number of moles of HCl :
Number of moles = 50 g / 36.5 g/mol
Number of moles = 1.4 mol
Compare the moles of both reactant with zinc chloride:
Zn : ZnCl₂
1 : 1
0.08 : 0.08
HCl : ZnCl₂
2 : 1
1.4 : 1/2×1.4 =0.7 mol
The number of moles of zinc chloride produced by Zn are less so it will limit reactants.
Mass of zinc chloride:
Mass = 0.08 mol × 136.3 g/mol
Mass = 11 g
First you need to find the limiting reactant
n (Zn) = m/MM = 5/65.38 = 0.076 ≈ 0.08
ratio = moles/coefficient = 0.08/1 = 0.08
n(HCl) = m/MM = 50/36.45 = 1.37
ratio = moles/coefficient = 1.37/2 = 0.685
So the limiting reaction is Zn
0.08/1 = x/1
x= 0.08 moles of ZnCl2
Then u need to find the mass
m= n(MM) = 0.08 (136.28) = 10.9 ≈11
Are the orbits of the planets could you pls help!!!! Pls don't send scam links !! in the solar system as they revolve around the Sun perfectly
circular?
Explain.
Answers
Answer: Orbits are elliptical, Sun is in focal point of the ellipse.
Explanation:
Orbits are not perfect circles. Distance of Earth from Sun is between
147 million kilometres - 152 million kilometres. When Earth is in closest point of the Sun it moves faster tant in the point which is most far away from Sun.
Kepler´s Laws give more information.
Stars in the sky appear to be moving. What do we call this conclusion that is based on observations, clues, or evidence?(2 points)
A.Hypothesis
B.Inference
C.Procedure
D.Report
Answers
Answer:
B. Inference
Explanation:
I dont have one but when i took a quiz it said it was right
Stars in the sky appear to be moving. We call this conclusion that is based on observations, clues, or evidence is Inference.
What is inference?An inference is a conclusion that we can make when we have seen evidences of some particular situations and according to that we give statements.
For example-
1. If someone made a bad face just after taking a bite of food then we can infer that the person didn't like the food.
2. If someone is going away from a place after another person arrived then we can infer that the first person doesn't like the second person.
3. If someone is very lazy from the beginning of the day then we can infer that the person didn't take proper rest.
Given options are-
A. Hypothesis
B. Inference
C. Procedure
D. Report
Therefore, Stars in the sky appear to be moving. We call this conclusion that is based on observations, clues, or evidence is Inference.
Learn more about Inference, here:
https://brainly.com/question/29774121
#SPJ3
How does the light from a flashlight that is shone from two different distances model the apparent magnitude of two stars with the same absolute magnitude ?
Answers
Answer:
With the distance allowing us a conversion from one to the other. Two stars can have the same apparent magnitude, but different absolute magnitude, if we measure the same amount of light from them, but they're at a different distance from the Earth.
Explanation:
Please help urgent !!! How does an instant cold pack get cold so quickly?
Answers
Answer:
When the inner bag of water is broken by squeezing the package, it dissolves the solid in an endothermic reaction. This reaction absorbs heat from the surroundings, quickly lowering the pack's temperature.
Explanation:
Uh, yea.
Have a good day!
Create a 10 question test to assess important topics on weathering, erosion and deposition. you may make multiple choice, fill in the blank and open ended questions. provide the right answers to assist you.
Answers
Answer:
Sorry i dont know the answers :(
Explanation:
Pls dont report me
plz helppppppppp meeeeeeeeeeeeeeee
Answers
4. Obsidian - rapid cooling when lava flows into water.
Granite - very slow cooling such as what occurs when magma is trapped beneath Earth's surface.
Basalt - cooling when lava flows over land
5. They are slightly simplistic and rock formation is not limited to only these methods.
6. They give a general overview of how a certain type of rock may be formed and how to identify them from a basic level based on their location.
Choose any electromagnetic wave we have discussed and write ONE PARAGRAPH telling me about the uses/benefits of that electromagnetic wave.
Answers
Answer:
UV Rays
Here are some points you can add
•used to sterilise equipment from microbacterial organisms
•used to create fluorescence mechanism
•used to purify air
•used to tenderize meat
•can be implemented in medical and dental practices
•water purification
•stimulates vitamin d production
please help!
a b c or d
Answers
Answer:
A glass pane / A.
Explanation:
Examples of insulators include plastics, Styrofoam, paper, rubber, glass and dry air. The division of materials into the categories of conductors and insulators is a somewhat artificial division.
Answer:
the answer is A
Explanation:
Which human body system creates the force that allows the body to move?
A.
musculoskeletal system
B.
nervous system
C.
respiratory system
D.
circulatory system
Answers
HELPPP this is a k12 so any links or false with be blocked or banned
Answers
Answer:
Sea level rise is caused by several different processes, including melting ice. But one big contributor to sea level rise is increasing global temperatures, which heat seas and cause something called thermal expansion of water. Thermal expansion happens when water gets warmer, which causes the volume of the water to increase. About half of the measured global sea level rise on Earth is from warming waters and thermal expansion.
Explanation:
I hope this helps