Answer:
because when it burns reacts with oxygen forming mg oxide
Where is chemical energy stored?
Answer:
Chemical energy is stored in the bonds that connect atoms with other atoms and molecules with other molecules
Explanation:
25 points each, brainlets for best anser, SOoooo please help me -n-
Answer:
Wowowoowoww
St0p tHe sPamM MaAn
Okay little brain
A chemist determined by measurements that 0.070 moles of barium participated in a chemical reaction. Calculate the mass of barium that participated in the chemical reaction.
Be sure your answer has the correct number of significant digits.
How does the temperature of the water affect
the movement of the food coloring?
pls help
Answer:
In cold water, the food coloring diffuses (spreads out) through the water slowly. The hot water causes the food coloring to diffuse faster.
Explanation:
The development of a nuclear power plant at an ocean site is expected to produce an enormous amount of electric power for a large population. Ocean water will be used to cool the plant and then returned to the ocean. What unintended consequences should be analyzed before starting construction?
Explanation: The awnser would be The effects of warmed water on aquatic life
How many moles of silver nitrate are there in 80.00 grams of silver nitrate?
Answer:
0.47094837228 moles
Explanation:
silver nitrate=169.87g per mol
80/169.87 = 0.47094837228
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.47moles of silver nitrate are there in 80.00 grams of silver nitrate.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically,
number of moles of substance =given mass of substance ÷ molar mass of substance
Molar mass of 1 mole of silver nitrate=169.87g/mol
mass of silver nitrate= 80g
Substituting all the given values in the above equation, we get
number of moles of silver nitrate=80 ÷169.87
=0.47moles
Therefore, 0.47moles of silver nitrate are there in 80.00 grams of silver nitrate.
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Organisms that depend on other organisms for food are consumers. Which consumer think is a herbivore (eats plants only)
Examples of herbivores are buffalo, elk, some bird species, mice, squirrels, rabbits, and many more.
To solve this, we must know each and every concept behind herbivores and carnivores. Therefore, herbivores include cows, goats, giraffes, sheep, and zebras etc.
What is herbivores?Herbivores, often known as herbivorous animals, are creatures that eat plants, leaves, fruits, and other plant-based foods for nourishment. They are classified as primary eaters and are found at levels 2 or above in the food supply chain.
Herbivores include cows, goats, giraffes, sheep, and zebras. Interestingly, there really are herbivores who specialize in eating on specific parts of the plant; for example, frugivores are herbivores that graze on fruits, whereas folivores are herbivore that eat on leaves.
Therefore, herbivores include cows, goats, giraffes, sheep, and zebras etc.
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Number 1 plsssssssssssssssssssssssss
Explain why an organism dies if the respiratory and circulatory system 'paused' for a while.
Answer:
Without the respiratory system your blood would be useless. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body
Explanation:
Help plzz asapp !!!!
Answer:
fractional distillation
A food web is an overlapping network of food chains.
True or fasle
True I hope this helps!!!!!!!!
Explanation:
why does sugar dissolve faster than salt
☁️ Answer ☁️
Option 1: When dissolved, sugar molecules have more opportunities to bond with positive-negative water molecules. Therefore, sugar dissolves faster than salt, because its component molecules are more soluble in water.
❤️
Option 2: Sugar can dissolve easier than salt because when you add 8 spoons of salt into water the salt already starts to stay in the bottom of the cup. And, when you add 30 spoons into water the sugar just starts to stay in the bottom of the cup. It’s almost the same.
Hope it helps.
Have a nice day!~ ￣▽￣❤️
How many molecules are in 3.5g of NaOH
Answer:
12.o44
Explanation:
Molar mass of naoh is 40g/mol
Number of moles=given mass/molar mass
=80/40=2mol
Again no of atoms 2x6.022x10"23=12.044
According to the concept of Avogadro's number, there are 0.527×10²³molecules in 3.5 g of NaOH.
What is Avogadro's number?Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number.Number of molecules= 3.5/40×6.023×10²³=0.527×10²³molecules .
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Describe the radial velocity curve. What is its shape? What is its amplitude? What is the orbital period?
Answer:
The radial velocity curve describes how fast a star is moving in its orbit around a center of mass ( m )
Curve amplitude : This is the maximum value of the radial velocity curve
Radial velocity shape ; The shape of Radial velocity curve is parabolic in nature
Orbital period : Orbital period is the time taken by the star to make one complete rotation in its orbit
Explanation:
The radial velocity curve describes how fast a star is moving in its orbit around a center of mass ( m ) while Curve amplitude is the maximum value of the radial velocity curve also The shape of Radial velocity curve is parabolic in nature. and Orbital period is the time taken by the star to make one complete rotation in its orbit
what is the distance from earth to Neptune in standard notation and scientific notation.
Answer:
Scientific Notation: 4.45963 x 109 km (29.811 A.U.) Scientific Notation: 4.53687 x 109 km (30.327 A.U.) By Comparison: If you weigh 100 pounds on Earth, you would weigh 110 pounds on Neptune.
Electric field lines /Conductor/ Electroscope/ Insulator Elementary charge/ Electric field/ Charging by conduction/ Charging by induction/ Potential difference
1. Separation of charges in an object without touching it is____________.
2. The work done moving a positive test charge between two points in an electric field divided by the magnitude of the test charge is the electric _________.
3. An electric __________ is a material through which charges move about easily. ___________ is giving a neutral object a charge by touching it with a charged object.
4. A material through which electrical charges does not move easily is an electrical _____.
5. The lines providing a picture of the size and strength of the field around a charged object are called the ________.
6. The property of the space around a charged object that exerts a force on other charged objects is the ______.
7. A device that helps determine charge using pieces of metal foil is a(n) _______.
8. The magnitude of the charge of an electron is the ________.
Answer: See explanation
Explanation:
1. Separation of charges in an object without touching it is (charging by induction).
2. The work done moving a positive test charge between two points in an electric field divided by the magnitude of the test charge is the electric (potential difference).
3. An electric (conductor) is a material through which charges move about easily. (Charging by conduction) is giving a neutral object a charge by touching it with a charged object.
4. A material through which electrical charges does not move easily is an electrical (insulator).
5. The lines providing a picture of the size and strength of the field around a charged object are called the (electric field lines).
6. The property of the space around a charged object that exerts a force on other charged objects is the (electric field).
7. A device that helps determine charge using pieces of metal foil is an (electroscope).
8. The magnitude of the charge of an electron is the (elementary charge)
pls help ASAPPPP!!
BRAINLIEST
Answer:
a
Explanation:
first one i did the test trust me
HELPPPPP!!
What statement below correctly describes the characteristics of a metal?
a) Metals are found on the right side of the periodic table, good conductors of heat and electricity, and malleable.
b) Metals are found on the left side of the periodic table, good conductors of heat and electricity, and malleable.
c) Metals are found on the left side of the periodic table, good insulators, and malleable.
d) Metals are found on the right side of the periodic table, good conductors of heat and electricity, and brittle.
Answer:
i promise you it's b
Explanation:
its not a or d because gasses are on the right side, its not d because metals are not brittle, and it's not c because theyre good conducters not insulators
answer:
b. metals are found on the left side of the periodic table, good conductors of heat and electricity, and malleable.
explanation:
non-metals are on the right (except for hydrogen, it's on the left-hand side)
good luck :)
hopefully, this helps
have a great day !!
Important question, please answer(worth 64 points.)
Balance this equation
___C8H18 + ____O2 ⇒ ___CO2 + ___H2O
Answer:
Is is talking about h20 water?
Explanation:
Answer:
2C8H18 + 25O2 ----> 16CO2 + 18H2O
Explanation:
Basically you can first list all your elements from your products and reactants:
C 8 x 2 C 1 x 16
H 18 x 2 H 2 x 18
O 2 x 25 O (2 x 18) + (2 x 16)
Water provides the ....................... for many plants and animals.
Answer:
I would say the living for many plants and animals
What color would red litmus paper turn in a solution of lime juice? Plz ans :(
Answer:
Stays redExplanation:
Red litmus + acid (lime) = stays red ✅
Red litmus + basic solution = blue
Blue litmus + acid (lime) = red
Blue litmus + basic solution = stays blue
________________
#Indonesian - kexcvi
What color would red litmus paper turn in a solution of lime juice?
Answer:Lime juice turns blue Litmus to Red so lemon juice is acidic in nature that is lime juice contains an acid. The most common indicator used for testing acids and bases in the laboratory is Litmus.Hopefully Help:)
#CarryOnLearningWhat is the chemical formula for dintrogen monosulfide?
Answer:
sulphur mozron tried is an ignore a compound with the formula SN it is the Sulphur and a log of the traditional nitric oxide no sulphur monitor ID names smiles and plus s - properties chemical formula and as molar mass 46.07 gmo l - 1
Sadiq repeated the experiment by adding sulphuric acid to magnesium carbonate. Write the word equation for this reaction below:
Answer:
Sulphuric acid + Magnesium Carbonate → Magnesium sulphate + carbon dioxide + water
Explanation:
Sulphuric acid + Magnesium Carbonate
The products are;
Magnesium sulphate, carbon dioxide and water
MgCO3 (s) + H2SO4 (aq) → MgSO4 (aq) + CO2 (g) + H2O (l)
Word Equation;
Sulphuric acid + Magnesium Carbonate → Magnesium sulphate + carbon dioxide + water
help ........,,,,.........
◆ Atomic mass of carbon (C) = 12g
◆ Atomic mass of oxygen (O) = 16g
No of moles of carbon (C) = 42.8/12= 3.57
No of moles of oxygen (O) = 57.1/16= 3.57
Simplest ratio :-
= 3.57 : 3.57
= 1 : 1
Empirical Formula = CO
How many molecules of Helium are in 1.0 mole?
Answer: 6158.46
Explanation:
1 mole of helium gas contains 6.02 x1023 helium atoms. 1 mole of water contains 6.02 x1023 water molecules.
______ stays the same no matter what location you are in
Answer:
Mass
Explanation:
I think so
What is ∆G system for the system that is described by the following data?
∆H system= -232 kJ, T= 293 K, ∆S system= 195 J/K
∆G system= ∆H system - T∆S system
a. -289 kJ
b. -175 kJ
c. 256 kJ
d. 56,903 kJ
Answer:
it is a
watch for kJ vs J as the enthalpy is in kJ and entropy is in J
Explanation:
What are non examples of tissue? Help please
Epithelial
I know just one
Complete the following table based on known properties of ionic and covalent compounds.
Answer:
structure of KF - ionic
Explanation:
(HELP ASAP) what is the reaction for Si + S₈ --> Si₂S₄
Synthesis reaction~~
Explanation: