Answer:
3.45 g/kg
Explanation:
the concentration of salt in seawater is about 35 parts per thousand, in other words it is about 3.5% of the weight of the sea water comes from the dissolved salts
Answer:
34.5 g/kg
Explanation:
Use the drop-down menus to complete each statement.
A material that causes a wave to bounce off it is called the
.
A material that takes in a wave when the wave hits it is called the
.
A student has two solid blocks that have different masses. The student knows that each block is composed of a pure substance, but she wants to know if the blocks are composed of the same pure substance. Which of these would best show that the blocks are composed of different substances?
A.
Both blocks can be scratched by a piece of glass.
B.
One block has a greater volume than the other block.
C.
One block conducts electricity and the other does not.
D.
Both blocks sink when placed in water.
Answer:
À
Explanation:
because they getting block for water not getting in
help please giving 10 points and brainlyiest
Answer:
I would try B and A.
Explanation:
I say this only because some veggies may be hard to slice and to prevent emergencies you would want to make the handle longer. Making it sharper and thinner would help, too because it would be easier to hold.
can someone please help me with this?
Answer:
1. Main sequence stars have different masses. The common characteristic they have is their source of energy. They burn fuel in their core through the process of fusing hydrogen atoms into helium.
2. Supergiants are among the most massive and most luminous stars. Supergiant stars occupy the top region of the Hertzsprung–Russell diagram with absolute visual magnitudes between about −3 and −8. The temperature range of supergiant stars spans from about 3,400 K to over 20,000 K.
3. Supergiants develop when massive main-sequence stars run out of hydrogen in their cores.
4. a supernova occur When the pressure drops low enough in a massive star, gravity suddenly takes over and the star collapses in just seconds. This collapse produces the explosion.
5. when a star has reached the end of its life and explodes in a brilliant burst of light
Explanation:
The life form represented by the fossil in rock layer 1 is not present in any of the layers above it. What is the most likely explanation for this?
A.
The life form evolved into all of the species in the next layer.
B.
The life form only recently evolved.
C.
The life form became extinct in the region long ago.
D.
The life form only recently moved to the region.
Answer:
C.
The life form became extinct in the region long ago.
Can cornstarch disintegrate in fire or an open flame?
Explain how Saturated Solution can dissolve no more solute
Answer:
saturated solution is a chemical solution containing the maximum concentration of a solute dissolved in the solvent. The additional solute will not dissolve in a saturated solution. The amount of solute that can be dissolved in a solvent to form a saturated solution depends on a variety of factors.
Explanation:
Answer:
When the solute equilibrium point is achieved and no more solute will dissolve, it is saturated.
can someone help me with this please? ill give brainliest:)
In conclusion, the amount of rainfall in 2004 was higher than the rest of the amounts in the years later and earlier than 2004. This shows that the amount of rainfall was high in 2004.
I just wanted to rant, this might get deleted. what is this, i know thats what both of them are. did it really expect me to come up with all of that?
Answer:
haha i totally get it
When vinegar and baking soda are mixed together, they experience a chemical change.
What evidence given would lead a person to think that the change is a chemical change?
the solution heats up or cools off
the solution changes shape
the solution changes size
(pls help)
Which claim do you think is the most convincing?
Claim 1: If you follow the instructions, the POW kits will always heat the water above the correct temperature for pasteurization (65°C), but some people didn’t follow the instructions.
Claim 2: Even if you follow the instructions, the POW kits will not heat the water above the correct temperature for pasteurization (65°C).
Did the Science Seminar cause your thinking about the claims to change? Explain your answer.
Answer:
1
Explanation:
you needa do the last question cause i am not learning this but 1 is right
help!!! pleaseeeee!!
Answer:
D) wind and solar
Explanation:
It's simple, the sun will never stop shining and the wind will never stop blowing PLEASE MARK ME AS BRAINLIEST
Need help ASAP!
Thank you so much for the help
Answer:
Option A
Explanation:
Why do Ionic Compounds have to have correct ratios of ions?
Answer:
.....
Explanation: Because the ionic compound must be electrically neutral
Your welcome
how did alexa canadys accomplishment impact the general public
Answer:
She was the first female African American to be certified by the American Board of Neurological Surgery.
Explanation:
She became the first female African American can to be certified.
write a sentence about the evidence for plate tectonics yielded from earthquakes,valcanoes, and age of sea floor.
Answer:
Fossils, Glaciers, Coastlines.
Explanation:
Evidence of plate tectonic theory are fossils, fossils of the same species were found oceans apart. also glaciers evidence of glaciers were found in places with warm climates. coastlines coastlines look like they fit in a puzzle.
What might you predict about the use of wind power five years from now?
HELPPP PLSSss
Answer:
Due to global warming, more wind turbines would be built to help climate change. Wind power stations are expensive so even if there would be more wind turbines, there won't be a lot of them because people won't be able to afford electricity with such a high price.
In an ecosystem,due to global warming, more wind turbines would be built to help climate change.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
Learn more about ecosystem,here:
https://brainly.com/question/13979184
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4
Which one causes global warming
A. carbon dioxide
B. helium
C. nitrogen
D. oxygen
Answer:
Is A- Carbon Dioxide
Explanation:
other air pollutants collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth's surface.
Our star, the sun, has a temperature of 5,530 degrees Celsius and has a luminosity of 1 solar luminosity units. At which letter on the HR Diagram would you place our sun? Question 3 options: A B C D
If two types of matter are combined and energy is given off, what type of change is likely to have occurred?
chemical change
physical change
particle change

shape change
Answer:
c 8sbthe and its not coming to you
Explain at least one observation you can make about the political borders and the language borders shown on the maps.
Be sure to name the country and describe how its political border is affected by language or a physical feature, such as bodies of water, mountains, or desert.
Use the physical map with the labeled nations to help you identify a nation.
Answer:
A boundary is a real or imaginary line that separates two things. In geography, boundaries separate different regions of the Earth.The most obvious type of boundary is a physical boundary. A physical boundary is a naturally occurring barrier between two areas. Rivers, mountain ranges, oceans, and deserts can all serve as physical boundaries. Many times, political boundaries between countries or states form along physical boundaries. For example, the boundary between France and Spain follows the peaks of the Pyrenees Mountains, while the Alps separate France from Italy.
The Strait of Gibraltar is the boundary between southwestern Europe and northwestern Africa. This narrow waterway between the Atlantic Ocean and the Mediterranean Sea is an important political, economic, and social boundary between the continents.
Rivers are common boundaries between nations, states, and smaller political units such as counties. The Rio Grande forms a large part of the boundary between Mexico and the United States. The Mississippi Riveris the defining boundary between many of the states it winds through, including Iowa and Illinois, Arkansas and Tennessee, and Louisiana and Mississippi.
How might it benefit forensic scientists to smaller subcategories for fingerprints?
Answer: Once the fingerprints are captured and described, judicial physicists use a categorization structure to label the ruling class. The three elementary mark on finger patterns is Whorl, Arch, and Loop. There are more intricate categorization methods that further decay the pattern to plain arches or make camp arches. Loops grant permission be branching or ulnar.
What tools are used to measure energy? and how.
Answer:
Name Purpose
Electricity meter Measures the amount of energy dissipated
ESR meter Measures the equivalent series resistance of capacitors
Frequency counter Measures the frequency of the current
Leakage tester Measures leakage across the plates of a capacitor
Explanation:
write a sentence about the evidence for plate tectonics contained in rock layers and global topography.
Answer:
modern continents hold clues to their distant past. Evidence from fossils, glaciers and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed.
Explanation:
Please tell me if i am right
URGENT
Make a 29 day timeline. Along the timeline draw and label the phases of the Moon starting with a full moon, crescent, first quarter, gibbous and full. Finish the second half showing the waning moons back to the new moon. how would i start with full moon
Answer:because the moon cycle is a loop
Explanation:the question just picked a place on the loop
full, gibbous,quarter, crecent ect
HELP ASAP
HELP NEEDED!!
Thanks!:)
Answer:
the answer is "Selective breeding"
B. Selective breeding
50 Points and Brainliest A student is looking through a microscope at some cells of an onion root tip. Many of these cells are undergoing division since the root tip grows quickly and requires more cells.
Which cell is going from metaphase into anaphase?
1> W
2> X
3> Y
4> Z
Answer:
3>y
Explanation:
not sure if its right but i tried
