Answer:
(d) pure water
Explanation:
A colligative property of solvents as water is the elevation of boiling point that describes how the presence of solutes in a solvent produce the increase in boiling point regard to the boiling point of the pure solvent.
In the problem, there are 3 solution that contains an amount of solute dissolved that will increase the boiling point of this solution but there is a solution that is just pure water. As the presence of solutes increases the boiling point, the pure water is the solution that has the lowest boiling point:
(d) pure waterWhy to you do that this app doesn’t tell me anything
What are molecules, and how are the properties of molecules different from the atoms they come from? Give an example.
Answer:
Molecules are the smallest particle of a compound or element which can be found in nature as a free entity and made up of atoms bonded together. The molecules can not take part in the chemical reaction on their own directly.
An atom is on other hand is the smallest particle that does not exist free in nature and bonded together to form molecules and involves in the chemical reactions directly.
Therefore we can say that the molecules are formed by atoms while the atom exists as an entity in nature.
What is SVD in chemistry
Answer:
Singular value decomposition (SVD)
Explanation:
If u search go ogle u could find a good definition here is one I found:
"Singular value decomposition (SVD) is a technique commonly used in the analysis of spectroscopic data that both acts as a noise filter and reduces the dimensionality of subsequent least-squares fits." credit: science direct <3
Hope this helps! :) Plz mark brainliest!
Green material has high amounts of
O carbon
O magnesium
O phosphorus
O nitrogen
What is the main disadvantage of parallel circuits?
Any break in the circuit stops the flow of charges.
There are multiple paths for charges to flow.
If one bulb goes out, the other bulbs will go out.
They are complicated to design and build.
Answer:
Hi there!!!! The answer is D. Have a good day
Explanation:
The parallel circuit is the most common type of electrical circuit used in houses and equipment. It generates more stable and efficient power system. They are complicated to design and build is the main disadvantage of parallel circuits. The correct option is D.
What are parallel circuits?A circuit is said to be in parallel in connection when the electric current has multiple paths to flow through. The components which are a part of the parallel circuits will have a constant voltage across all ends.
The major disadvantages of parallel circuits are, it requires the use of a lot of wires, it is not possible to increase or multiply the voltage in a parallel circuit. The parallel connection also fails at the time when it is needed to pass same quantity of current through the units.
Thus the correct option is D.
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Heat transfer by radiation is a good example by which of the following.
science 0.00897 in scientific notation
the answer is
8.97×10^-3
https://www.sciencenews.org/article/first-black-hole-discovery-cygnus-massive
Can someone read the article and write a two paragraph summary for me? (anyone who is not busy and someone who can write)
The second paragraph is how this information affects the world and life as we know it.
I will give you 20 points or more if its good + Brainlist
Answer:
Cygnus X-1 21 is the heaviest stellar hole to be discovered. Cygnus X-1 21 weighs 21 times as the sun's mass. Scientists previously assumed wrong, it is around 1.5 times heavier then the last estimate. Cygnus X-1 21 was discovered by scientists using VLBA (Very Long Baseline Array.) This was discovered without gravitational waves which is usually used in science.
The network is 10 radio dishes and ranges to the United States, from Hawaii to the Virgin Islands. VLBA was responsible for tracking radio-bright jets of material flowing out of Cygnus X-1’s black hole for six days straight. Cygnus X-1 is around 7,200 light-years from Earth, which contradicts the last estimate of 6,000. The measurement for this new discovery gives astronomers a tough challenge in their understanding of black holes. Theres more to come in science with each discovery made.
Explanation:
is this good?
I have four questions hope you can help me
Answer:
2+2 kaszkqkq
Explanation:
substances decrease in size on __ (heating/ cooling) and contract.
What geological forces might be responsible for this range of mountains?
2. Tania went outside and made two observations of the Moon that were several days apart. Her
observations are shown in the diagram above. The light part of the Moon appeared to get larger over
time. Why did this happen?
Answer:
I am very confused who is diagram.
Explanation:
in the balanced chemical reaction shown below, what is the molar ratio of O2 to H2O
C3H8(g) + 5O2(g)—> 3CO2(g) + 4H2O(g)
A. 4:3
B. 3:1
C. 5:4
D: 5:3
the molar ratio of O2 to H2O is C. 5:4.
What is the C3H8 to H2O mole ratio?Looking at the coefficients, the stoichiometric proportion of water to methane (C3H8) is 4:1.In other words, 4 moles of water were produced for every mole of propane that is utilized.Hence, 0.1486 moles of C3H8 will be required for propane in order to produce 0.5944 moles of H2O.
What kind of reaction does ch4 g)+ 2o2 g)+ 2H2O g) represent?Combustion is the correct response (letter C).An illustration of a complete combustion is the one that was given.Oxygen gas is a reactant in a combustion reaction that results in the products carbon dioxide and water.
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calculate the mass of an atom of silver
Answer:
The Atomic mass of Silver is 107.8682u
Answer:
107.8682 u
Explanation:
Hope this will help
How many H atoms are in 0.170 mole of ammonium sulfate?
Answer:
8
Explanation:
1- beaver
2- eastern mole
3- opossum
4- woodchuck
pleassee help asap its only one question ..its the bottom one and its 30 points plzzzzzzzz
Answer:
sorry !
Explanation:
Which of the following describes the characteristics of a solid?
Answer:
They have a definite shape and volume. The particles are very close and compacted together.
Explanation:
Tiana is a chemist who is making a chemical to add to swimming pools in order to make the water safer. she mixed two solid substances together in a sealed container. the diagram above shows the repeating groups of atoms that make up the two starting substances. After mixing, Tiana found two liquid substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?
Explanation:
chemical to add to swimming pools in order
to make the water safer. She mixed two solid
substances together in a sealed container.
The diagram above shows the repeating
groups of atoms that make up the two
starting substances.
After mixing, Tiana found two liquid
substances in the sealed container.
(Nothing had escaped.) Which of the
diagrams to the left shows the repeating
groups of atoms that make up the ending
substances?
Answer:
Where are the pictures????
Explanation:
2.00 L of a gas is collected at 25.0°C and 745.0 mmHg. What is the volume at 760.0 mmHg
and 273K. someone help i only have 2 mins left
Answer:
1.79 L
Explanation:
Step 1: Given data
Initial volume of the gas (V₁): 2.00 LInitial temperature of the gas (T₁): 25.0 °CInitial pressure of the gas (P₁): 745.0 mmHgFinal volume of the gas (V₂): ?Final temperature of the gas (T₂): 273 KFinal pressure of the gas (P₂): 760.0 mmHgStep 2: Convert T₁ to Kelvin
We will use the following expression.
K = °C + 273.15
K = 25.0 °C + 273.15 = 298.2 K
Step 3: Calculate the final volume of the gas
We will use the combined gas law.
P₁ × V₁ / T₁ = P₂ × V₂ / T₂
V₂ = P₁ × V₁ × T₂ / T₁ × P₂
V₂ = 745.0 mmHg × 2.00 L × 273 K / 298.2 K × 760.0 mmHg = 1.79 L
Some students decide to plant their own garden. They want to eat a more plant-based diet For meat, they will buy locally from a butcher. Any remaining scraps will be composted and used as fertilizer for their garden Which part of this plan represents recycling to reduce their waste?
composting scraps
planting a garden
eating a plant-based diet
buying locally
Answer:
composting scraps
recycling is the action or process of converting waste into reusable material.
Which of these shows the correct hierarchical sequence?
organs cells ▸ tissues ► organ systems
cells ► tissues ► organs organ systems
organ systems tissues › cells organs
tissues cells organs ► organ systems
Answer:
cells -> tissues -> organs -> organ system
Answer:
Cells > tissues > Organs > Organs Systems
Explanation:
tissues are made of a group of cells
a specific organ is made up of a geoup of specific type of tissues
and a group of organs make up the organs system
How can you use the Periodic Table of Elements to help you find information about specific elements? PLZZZ HELP MEEEEEE!!!!
Answer:
Yuh imma help-........
17. A substance breaks down into its component elements when it is heated. If 68.0 g of
the substance is present before it is heated, what is the combined mass of the
component elements after heating?
The combined mass of its component elements after heating is 68.0 g.
According to the law of conservation of mass, matter is neither created nor destroyed but is converted from one form to another.
When a substance is decomposed into its components, the total mass of components recovered after heating must be equal to the mass of substance before heating in accordance with the law of conservation of mass.
As such, the mass of the elements obtained after heating must also be 68.0 g.
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Identify the products for Ca + H2O(l)
Answer:
i
Explanation:
Answer:
Ca(OH)2 + H2
Explanation:
hope this helps
Your friend John is having trouble with his compost bin. The material in his compost pile doesn't seem to be decomposing
well. You take a sample of the pole and check for the presence of microorganisms under the microscope You see that there
are indeed microorganisms, however, they don't appear to be growing very fast John says that he regularly mixes his
compost pile to expose it to oxygen What is the most likely explanation for this problem?
The temperature may not be high enough to encourage microorganism growth
Inorganic materials may have been included in the compost pile
The temperature may be too high for microorganisms to tolerate
Inappropriate food waste may have been included in the compost pile
How is sedimentary rocks formed?
Answer:
Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension
Explanation:
1. Mr. Brown weighs 670 newtons and he climbed a ladder that was 5 meters
high. How much work did he do?
An element that is likely to combine with other elements to form new substances is said to be ______.
A. buoyant
B. chemically reactive
C. metallic
D. solid at room temperature
Answer:
B. Chemically reactive
Explanation:
A Chemically reactive element is an element that is likely to combine with another element to form new substances
The reactivity of the element depends on the number of electrons in the outermost energy level and even the distance of the outermost energy level from the nucleus. From the periodic table, Fluorine is the most reactive non-metal while francium is the most chemically reactive metal
Fish, amphibians, reptiles, birds, and mammals have similar embryos. They all start with gill slits. Fish and some amphibians grow to have gills. Some amphibians, reptiles, birds, and mammals develop lungs to breathe air
They all start with tails. Fish, some amphibians, reptiles, and birds grow tails. Humans do not keep their tails.
Fish and reptiles develop scales. Amphibians, birds, and humans have skin. Birds have feathers, and humans have hair. With which animal do humans exhibit the most linear relationship?
birds
amphibians
reptiles
fish
Answer:
Birds
Explanation: They are both mammals
Answer:
birds
Explanation: