Answer:
C3H6O + 4O2 → 3CO2 + 3H2O or 11
Explanation:
Answer:
11
Explanation:
A sample substance has the chemical formula:
H2CO3
One molecule of the sample contains -
Two different elements with atomic numbers 1 and 27
Two different elements with atomic numbers 1, 6, and 8
Two different elements with atomic numbers 2 and 29
Two different elements with atomic numbers 2, 8 and 20
Answer:
1,6,8
Explanation:
Periodic Table- H=1.C=6,O=8
Hydrogen is H, Carbon is C, Oxygen is O
One molecule of the sample contains three different elements with atomic numbers 1,6 and 8.
What is an element?Element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.Each element has its own characteristic property.
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Your question is incomplete, but most probably your full question was,a sample substance has the chemical formula:
H2CO3
One molecule of the sample contains -
Two different elements with atomic numbers 1 and 27
Two different elements with atomic numbers 1, 6, and 8
Two different elements with atomic numbers 2 and 29
Two different elements with atomic numbers 2, 8 and 20
Three different elements with atomic numbers 1,6 and 8
Hi I really need help 7th grade science Water gets soaked up by a paper towel because of the property of blank Adhesion Cohesion Deposition Evaporation
Answer:
Adhesion
Explanation:
Water is soaked up by a paper towel because the forces of adhesion exceeds the forces of cohesion.
The forces of adhesion binds the water molecule to the paper towel while the forces of cohesion binds the water molecules to each other.
Adhesion of water to the walls of the paper exerts an upward force that draws water molecules up the paper.
Hence, the movement of water up a paper towel occurs when the forces of adhesion to the walls of the paper is greater than the forces of cohesion acting between the water molecules.
For a certain chemical reaction, the bond energy of the reactants is 43 kJ, and 35 kJ of energy is released. For energy to be conserved, what is the bond energy of the products?
Answer:
78kJ
Explanation:
Energy change = Energy in (reactants) - Energy out (products)
According to this question, energy is released, meaning that the reaction is EXOTHERMIC. Hence, the energy change will be negative (-) i.e bond energy of reactants is greater than bond energy of products.
Energy in = bond energy of reactants = 43kJ
Energy out = bond energy of products = ?
Energy change of exothermic reaction = -35kJ
Therefore;
-35kJ = 43kJ - x
x = 35kJ + 43kJ
x = 78kJ
The bond energy of the products is 78kJ.
Which of the following represents the chemical reaction of benzene and nitric acid to produce nitrobenzene and water?
Answer:
D
Explanation:
i mean it's just taking the words of the question and putting them into an equation
[tex]\huge\boxed{Option C}[/tex]
_____________________________________Equation:Benzene + Nitric Acid ---------> Nitrobenzene + water_____________________________________Explanation:As per Question,
It is saying that Benzene(organic compound) reacts with nitric acid. So,
Benzene and Nitric Acid are Reactants,
Nitrobenzene is the Product.
_________________________________________________________
General way of showing the reaction is,
Reactants --------> ProductIn the following Question,
Benzene is Reactant no. 1,
Nitric Acid is Reactant no.2,
Nitrobenzene is Product no 1,
Water is a By Product.
_____________________________________Best Regards,'Borz'uses of ethanol as a reagent
Reagent in synthetic organic chemistry and chromatography. Industrial and laboratory organic solvent. Other uses are in manufacture of denatured alcohol, pharmaceuticals (rubbing compounds, lotions, tonics, colognes), in perfumery. Octane booster in gasoline.
The chemical equation shows only the reactants and one product. How many H atoms must be present in the second product that is formed?
Answer: In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products. If we count the number of hydrogen atoms in the reactants and products, we find two hydrogen atoms.
What type of change goes on inside when a glow stick is activated?
Chemical
Physical
Both
Answer:
Chemical
Explanation:
Microwave warming Popcorn is a  example of
A. Conduction
B. Convection
C. Radiation
D. None of these
Answer:
A
Explanation:
Ttu67j5ri76tio5777t65y75ircyjutfjgtfv
What is the best explanation of an organelle?
An organelle is a structure within the cytoplasm of a eukaryotic cell that is enclosed within a membrane and performs a specific job. Although ribosomes are not enclosed within a membrane, they are still commonly referred to as organelles in eukaryotic cells.
Answer: A organelle is a structure within the cytoplasm of a eukaryotic cell that is enclosed within a membrane and performs a specific job and although ribosomes are not enclosed within a membrane, they are still commonly referred to as organelles in eukaryotic cells.
PLEASE HELP ME!!!!
Answers are below the sentence
Answer:
Mass
Explanation:
Which object is an insulator?
A. Iron
B. Copper
C. Plastic
D. Salt water
Answer:
c. plastic is an insulator
Explanation:
a and b are metals which are conductors and d contains water which is also a conductor
Match the word on the left with the definition on the right.
____ black dwarf e. star left at the core of a planetary nebula
____ white dwarf g. a red super giant star explodes
____ nebula c. what a medium-mass star becomes at the end of its life
____ protostar b. a large cloud of gas or dust in space
____ supernova a. exerts such a strong gravitational pull that no light escapes
____ neutron star d. the earliest stage of a star ’s life
____ black hole f. the remains of a high mass star
Answer:
Black dwarf- C
white dwarf- F
nebula- B
protostar-D
supernova-G
black hole-A
Can you think of a way you use the geometrical terms reflection and translation in real life?
I have aids ;-;
Answer:
building really complicated legos
Explanation:
Which of the following correctly shows the flow of energy in a food chain
The direction of energy flow in simple food chain is always sun=> plants( producers)=> primary consumers=> secondary consumers=> tertiary consumers, than finally after death of an organism, to decomposers
The direction of energy flow in simple food chain is always sun=> plants( producers)=> primary consumers=> secondary consumers=> tertiary consumers.
What is food chain?The sequence of events within an ecosystem known as a "food chain" occurs when one live organism eats a different organism, which is then eaten by a larger organism. A food chain is created by the transfer of energy as well as nutrients from one creature to another at various trophic levels. A food web is comprised of numerous linked food chains.
The feeding habits or connections between living things are also explained by the food chain. Trophic level is the term used to describe the orderly phases in a food chain, from producers from the bottom through primary, secondary, and tertiary consumers. A trophic level is any position along a food chain. A food web and a food chain are similar, but a food web seems far bigger. The direction of energy flow in simple food chain is always sun=> plants( producers)=> primary consumers=> secondary consumers=> tertiary consumers.
Therefore, the direction of energy flow in simple food chain is always sun=> plants( producers)=> primary consumers=> secondary consumers=> tertiary consumers.
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Which of the following best defines a basic solution?
True or False:Excessive thermal energy will result in the removal of salt from the oceans.
Answer:
false
Explanation:
the excessive heat would cause the water to evaporate so it wouldn't remove the salt it would remove the water. what you would get would be an ocean bed with tons of salt at the bottom.
PLEASE HELP
Determine the pressure in kPa that 5.14g of carbon monoxide has when it occupies a volume of 20.00L at 313K.
Do you go to Millbrook? 23.9kPa
The reaction K(s) + 2H2O(l) → 2KOH(aq) + H2(g) is a decomposition reaction.
True
False
Answer:
Yes it is true reaction
Answer: yes it is true
Explanation: i took the test
which element has a higher atomic number of aluminum or oxygen
Answer:
aluminum
Explanation:
oxygen's atomic number is 8.
aluminum's atomic number is 13.
An object has a mass of 60 ounces and a volume of 30 cups. What is the density? _______ oz/cup (your answer should *only* be a number, round to one decimal place if needed) *
Answer:
2.0
Explanation:
Given data:
Mass of object = 60 ounce
Volume of object = 30 cups
Density = ?
Solution:
d = mass/ volume
d = 60 ounce/ 30 cup
d = 2.0 oz/cup
Thus, density of object is 2.0 oz/cup.
7. Where can electrons be found in an atom?
- electron cloud
- nucleus
- both nucleus and electron cloud
- electrons cannot be found in atoms
Which compound in the picture has a central atom with four outside atoms and has at least one nonpolar bond.?
Answer:
The correct answer is option B, that is, methane.
Explanation:
In the given question, the compound in option B is methane. It is a compound that exhibits two elements, that is, hydrogen and carbon. It possesses a central atom, which is encircled by four atoms of hydrogen. The chemical formula for the compound is CH4.
The outer atoms in methane are dipoles and exhibits in the same orientation. This property of methane makes it completely a non-polar molecule. The compound itself is non-polar and exhibits non-polar bonds.
A can was filled with crushed ice, sealed, and massed. The ice was melted by slowly warming the can and its contents. No water vapor escaped and no air entered the can. If the can is then massed again after the ice has melted, what is the best prediction of the mass?
A) The mass would be the same.
B) The mass would be more.
C) The mass would be less.
D) It is impossible to predict without more information.
Answer:
A) The mass would be the same.
Explanation:
Since there is no loss of any particle to vapor during the phase change process from solid to liquid, the mass of the before and after the process will remain the same.
In this way, the law of conservation of mass is obeyed. Mass is the amount of matter contained in a substance. Since there is no room for escape or matter loss, the mass will remain the same.Answer:
be the same
Explanation:
What is filtration .
Will mark as brainliest
Answer:
the action or process of filtering something or in chemistry separating suspended solid matter from a liquid causing latter to pass through the pores is some substance
Why do lunar and solar eclipses not happen every month?
-Eclipses only occur during full and new moons.
-Earth rotates around its axis faster than the moon.
-The moon and Earth only travel through the penumbras.
-The moon’s axis does not always align with Earth’s shadow.
Answer:
i think its the last one
What is the acceleration of a 200 gram ice cube if the
net force on the ice cube is 2 N?
Answer:
First answer is correct, please let me know if you need any help though!
A substance has a molecular formula of C8H10N4O2
The empirical formula of a substance = C₄H₅N₂O
Further explanationThe empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
((empirical formula)n=C₈H₁₀N₄O₂
divide by 2 :
(C₄H₅N₂O)₂=C₈H₁₀N₄O₂
:answer question number 7
Answer:
Volume
Explanation:
yo brother these are so easy, just study bro. I helped you answer 3 already lol
whatever.
Hope I helped :)
PLEASE HELP WILL GIVE BRAINLY IF CORRECT
Answer #1: Lithospheric plates are part of a planetary scale thermal convection system. The energy source for plate tectonics is Earth's internal heat while the forces moving the plates are the “ridge push” and “slab pull” gravity forces. It was once thought that mantle convection could drive plate motions.
Answer #2:Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle. Subduction zones are sites that usually have a high rate of volcanism and earthquakes.
hope you find what you looking for
In coastal ecosystems as sea otters populations decline sea urchins populations
Increased
Decreased
Remained the same
None of the above