Answer:
The answer is 10 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 300 g
volume = final volume of water - initial volume of water
volume = 40 - 10 = 30 mL
We have
[tex]density = \frac{300}{30} = \frac{30}{3} \\ [/tex]
We have the final answer as
10 g/mLHope this helps you
How can you relieve stress?
Helpppp, this is due at 12:00 am !!!!
Answer:
The individual substances in a mixture can be separated using different methods, depending on the type of mixture. These methods include filtration, evaporation, distillation and chromatography.
Explanation:
what is balance equation and how we balance equation
Answer:
To adjust the substance condition, you need to ensure the quantity of molecules of every component on the reactant side is equivalent to the quantity of particles of every component on the item side. To make the two sides equivalent, you should duplicate the quantity of particles in every component until the two sides are equivalent.
Explanation:
Plz, Help :/ you can choose any question you want or all of it if you pleased.
Answer:
29. Proteins support the body's structural framework, chemical reactions, and contractions (muscle movement).
30. Proteins have a primary structure (polypeptide chain of amino acids), secondary structure (made up of alpha helices and beta pleat sheets), tertiary structure (superimposed on secondary structure), and quaternary structure (2 or more polypeptide chains with its own tertiary structure).
31. Protein molecules can denature if conditions aren't right, such as the wrong temperature or pH level. When denatured, proteins typically lose their shape and their function for a short time because their active sites become deactivated (though if conditions are too extreme, they can permanently lose their function). This happens to globular proteins because they are not nearly as stable as fibrous proteins due to their functional 3D shape.
I just did the first 3 since I could easily access the proteins section in my textbook at the moment. :)
25 Points Please Help ASAP! Will Mark Brainliest If All Are Answered!!
Answer:
c because it is a group of elements
Explaation:
The process of water migrating from areas of low electrolyte concentration to area of high electrolyte concentration is called ———————. ——————— is the medicine term for the swelling of the brain
Answer:1-Diffusion
2-Cerebral edema
Explanation:
The process of water migrating from areas of low electrolyte concentration to areas of high electrolyte concentration is called diffusion.
Cerebral edema is the medical term for the swelling of the brain.
What is diffusion?Diffusion is a process where the substance or ions of from a low concentration to a high concentration. It occurs against the concentration gradient, so it needs energy.
Cerebral edema is a condition where fluid gets filled in the brain and the brain swells and make pressure on the skull called intracranial pressure.
Thus, Diffusion is the mechanism by which water moves from regions with low electrolyte concentrations to regions with high electrolyte concentrations.
The medical term for brain swelling is cerebral edema.
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How many elements are in the following equation? salt pure water(NaC/
+ H2O)
Answer:
4
Explanation:
Sodium Na, Carbon C, hydrogen H2, Oxygen O
How many kilograms does 300 cg of cheese weigh?
Answer:
300 centigrams of cheese would weigh 0.003 kilograms.
Explanation:
lol pls help... i need examples of covalent bond, ionic bond, and metallic bonds using real life objects.
Answer:
cavalent bond =diamond, carbon, silica, hydrogen gas, water, nitrogen gas
ionic= i don't know
metallic bonds= Silver, gold, nickel, copper, ironl, cobalt, calcium and magnesium, gold, barium, platinum, chromium,
Explanation:
not all are objects so pick the ones that are.
Which substance is a heterogeneous mixture?
Suspension
Solution
Compound
Colloid
Answer:
Suspension
Explanation:
pls help its the last question!!!!!!
The statement "If I put fenders on a bicycle,
then they will keep the rider dry when riding
through puddles" is an example of
A. an observation.
B. a hypothesis.
C. a theory.
Hypothesis: Which materials do you think will meet the special needs of Parvus' house? Use the drop-down selections to create your hypotheses. Be sure to record your hypotheses on your lab report. If we use Select to build the roof of the house, then the temperature inside the house will remain cooler. If we use Select to build the walls and floors of the house, then the temperature inside the house will remain cooler. If we use Select to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate. If we use Select to construct the latches on the windows and doors, then the magnetism will keep the latches secure.
Answer:
This question is incomplete as it lacks the options for each hypothetical statement. The options for each hypothesis are:
wood, clay brick, iron, aluminum, copper, or nickel
The answers to each hypothesis are:
1. Wood
2. Clay brick
3. Copper
4. Iron
Explanation:
Firstly, a hypothesis is a testable explanation given to explain an observed problem or to answer a question. In this case, "which materials will meet the special needs of Parvus' house?" is the question.
The question requires one to complete the given hypotheses using the options given.
- If we use WOOD to build the roof of the house, then the temperature inside the house will remain cooler. The best answer is "wood" because wood conducts/absorbs heat the least among the materials that can be used for roofing, hence, it will make the inside of the house cooler.
- If we use CLAY BRICK to build the walls and floors of the house, then the temperature inside the house will remain cooler. Clay brick is the best material for building walls and floors of a house among the option. Also, it conducts heat fairly making the interior of the house cool.
- If we use COPPER to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate. Copper, among all other metal, is the best conductor of electricity due to its properties including low resistivity. Hence, using copper will make electricity to flow into the home at a faster rate.
- If we use IRON to construct the latches on the windows and doors, then the magnetism will keep the latches secure. Iron is the metal with the best magnetic property. Therefore, using it to construct the latches on the windows and doors will guarantee magnetic security.
Which term is an example of a force
I believe the answer is C. Work.
Working is basically you.. well.. working, we push and pull things all the time.
Answer:
weight
Explanation:
just trust me
How do I write the following :
One atom of Nitrogen
Five atoms of Nitrogen
One molecule of Nitrogen
Five molecules of Nitrogen
One molecule of Sulfur
One atom of Sulfur
Eight molecules of Sulfur
Answer:
Five molecules of nitrogen and eight molecules of sulfur
Explanation:
Use the periodic table to select the element that best fits each of the following descriptions. Halogen:
fluorine
scandium
hydrogen
answer is fluorine
Answer: fluorine
Explanation:
Answer:
fluorine on edge 2020
Explanation:
hope this helped:)
help i need to pass this class
Answer: It would be B
Explanation: a magnet moves from north to south
due to pole attraction is more in the north region
How many grams of sugar must be dissolved in 150 mL of water to make a solution with a concentration of 0.6 g/mL?
Answer:
250
Explanation:
all you have to do is divide them its simple division cause its by the volume by the density
Mass can be calculated by using moles which can be further calculated from multiplication of Molarity to volume. The mass of sugar to make this solution is 8.6 kg.
What is molarity?
Molarity can be calculated by dividing number of moles of solute by volume of solution in litre. Molarity is affected by temperature. Its unit is mole/litre. It measure the concentration of any solute in a solution.
Other concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution
Mathematically,
Molarity= number of moles of solute/volume of solution in litre
Where,
moles= given weight /by molecular weight
= w/ 96.0858
Substituting values in equation 1
0.6=(w/96.0858)/(150 )
w=8.6 kg
Thus the mass of sugar is 8.6 kg.
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Bond the following atoms. Determine if they are ionic or covalent, circle your choice. Show the valence electrons and how they are either shared between the atoms or how they are transferred between atoms. Then write the chemical formula in the space provided.
Ionic or covalent
C Cl
Formula ____________ Ionic or covalent
Mg Cl
Formula _____________
C Cl is a covalently bonded compound with the formula CCl₄. MgCl is an ionic compound with the formula MgCl₂.
What is meant by chemical bonding?The formation of a chemical bond between two or more atoms, ions or molecules to form a chemical compound is known as chemical bonding. The chemical bonding makes sure the atoms are together in the resulting compound.
Chemical bonding is made possible by an attractive force resulting from the overall loss of energy in the resultant molecule compared to its constituents.
Chemical compounds depend on chemical bonding for their stability. There are various kinds of chemical bonds formed. Covalent bonds and ionic bonds are 2 of the most commonly known chemical bonds.
Covalent bonds are formed by the sharing of electrons and an ionic bond is formed by the electrostatic force of attraction between the atoms.
Therefore, in the given examples, C Cl is a covalently bonded compound with the formula CCl₄. MgCl is an ionic compound with the formula MgCl₂.
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The bond of the following atoms in C-Cl and Mg-Cl is polar covalent bond in C-Cl and Mg-Cl ionic bond.
What is polar covalent and ionic bond?Polar covalent bonds are created between two non-metal atoms or molecules that do consist of different electronegativity. and the electronegativity difference that is not equal to zero and the shared pair of electrons forming a bond between will always be towards the high electronegative atom.
An ionic bond the complete sharing or the electron transfer. Ionic bonds basically form or created when the difference in the electronegativity of the two atoms is great or more as compare to covalent bonds form when the electronegativity is same.
Therefore, bond of the following atoms in C-Cl and Mg-Cl is polar covalent bond in C-Cl and Mg-Cl ionic bond.
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In science class, Blaine’s teacher puts one glow stick in a cup of hot water and another glow stick in a cup of cold water. She asks the students to think about how the temperature of the water will affect the chemical reaction that occurs inside the glow stick once it is bent and starts to glow.
Which glow stick will be brighter once it is bent? Explain your answer.
Answer:
The glow stick in hot water will be brighter
Explanation:
The glow stick in hot water will be brighter than the glow stick in cold water because the heat from the hot water will cause the molecules in the glow stick to move faster. The faster the molecules move in the glow stick, the sooner and brighter the reaction will be. The cold water will cause molecules to move slowly and it will take longer for the reaction to occur, which will also make it less bright.
Answer:
The glow stick that was in the cup of hot water will be brighter once it is bent. The production of more light is evidence that the chemical reaction in the glow stick is happening faster. The reaction happens faster, because increasing the temperature increases the rate of a chemical reaction.
Explanation:
Just took assignment
what is the heat of reaction H2 + 1/3N2 2/3NH3
Which statement best describes John Dalton’s use of creativity in his work?
Answer:A
Explanation:
On ed2020
What is the name of the the following formula Cd(HOOCCOO)2
Answer:
I think that is called oxalic acid
Explanation:
For each compound, write the cation and anion with the appropriate charge. Then write the chemical formula for each compound.
Example: sodium fluoride: Na+1, F-1 NaF
a. Magnesium oxide
b. Strontium iodide
c. Aluminum chloride
d. Calcium phosphide
Answer:
Magnesium oxideStrontium iodideAluminum chlorideCalcium phosphide5% and NanO2 Cax[tex]x^{2}[/tex]
How many electrons are shared between one nitrogen
atom and one carbon atom
An agronomist hypothesized that add ran intots
the growth of Bermuda grass seedlings. He
planted three samples of grass and watered each
with a different pH solution.
How did plant growth in the pH 3.1 group compare
to plant growth in the other groups?
Answer:
D
Explanation:
Answer:
1. D
2. A
Explanation:
what do small numbers of 12,22, and 11 stands for in C12H22O11
Answer:
The number of each element in the molecule.
Explanation:
C₁₂H₂₂O₁₁ is one molecule, and it is made 3 elements carbon, hydrogen, and oxygen. There are 12 carbons, 22 hydrogens, and 11 oxygens. If these numbers were different, it would be a different molecule.
Boat A and Boat B have the same mass. Boat A's velocity is three times greater than that of Boat B. Compared to the
kinetic energy of Boat B, the kinetic energy of Boat A is
O one-third as much.
3
O three times as much.
O six times as much.
O nine times as much.
Answer:nine times as much
Explanation:
Answer: 9x as much
Explanation:
Explain how nuclear and chemical reactions differ in terms of how they are balanced. (PLEASE ANSWER ASAP THIS NEEDS TO BE TURNED IN SOON)
Explanation:
(1) Nuclear reactions involve a change in an atom's nucleus, usually producing a different element. Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei. ... (3) Rates of chemical reactions are influenced by temperature and catalysts.
A substance is found to have a volume of 50 mL in an open beaker. In a flask, it changes
shape but maintains a volume of 50 mL. This substance is most likely:
A-Liquid
B-solid
C-gas
Answer:
LIQUID
Explanation:
The substance found to change shape in a different container but maintained volume is most likely a liquid.
STATE OF MATTER:Matter is any substance that has weight and occupies space. Matter can exist in three different states namely:
SolidLiquidGaseousLiquid as a state of matter is characterized by weak bonds that holds its particles together, hence, liquids flow.
Liquids assume the shape of the container that holds them. Hence, according to this question, the substance found to change shape in a different container but maintained volume (50ml) is most likely a liquid.
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