Answer:
34.81 ×10²³ atoms
Explanation:
Given data:
Mass of water = 52.0 g
Number of atoms of hydrogen = ?
Solution:
Number of moles of water:
Number of moles = mass/molar mass
Number of moles = 52.0 g/ 18 g/mol
Number of moles = 2.89 mol
1 mole of water contain 2 mole of hydrogen.
2.89 mole of water contain 2.89× 2= 5.78 moles of hydrogen.
Number of atoms of hydrogen:
1 mole = 6.022×10²³ atoms
5.78 mol × 6.022×10²³ atoms / 1mol
34.81 ×10²³ atoms
What happens when the two atoms are Too close
the electrons of each atom will be attracted to both nuclii.
Determined which equation is balanced or unbalanced.
Answer:
1. balanced
2.unbalanced
3.unbalabced
4.balanced
The arrow in a chemical equation represents the ________________ _________________
PLS PLS PLS HELP I WILL MARK YOU BRAINLYEST PLS
Answer:
A: Endoplasmic reticulum
B: Chroloplast
C: Mitochondrion
D: Cytoplasm
E: Cell wall
Explanation:
What is the location of elements in the periodic table related to?
Answer:
.
Explanation:
An element's location in the periodic table is largely depending on its electrons. The number of valence shell electrons determines its group, and the type of orbital in which the valence electrons lie in determines the element's block. Sometimes during these groups there are more like the alkali metals the non metals and gases :)
true or false, water boils at 100°c
Answer:
This is true
Explanation:
What element is in period 6 with 2 valence electrons?
Answer:
Barium
Explanation:
I think that's the answer
The element in period 6 with 2 valence electrons is Barium.
The periodic table has been organized into periods and groups. The period is in an horizontal arrangement while group is vertical arrangement. The elements that can be found in period 6 are Beryllium, Magnesium, Calcium, Strontium, Barium etc. Elements in the same group have the same number of valence electrons. This means that elements in group 2 have 2 valence electrons. Barium possess two valence electrons because it is in group 2 and it is also in period 6. Therefore, the element in period 6 with 2 valence electrons is Barium.Learn more at: https://brainly.com/question/24089206?referrer=searchResults
The __________________ is the process by which gases in the atmosphere absorb and reradiate heat.
Answer:
Greenhouse effect
Explanation:
Answer: water vapor, carbon dioxide and other gases absorb and reradiate thermal energy.
Explanation:
What is it called when a rock is broken down into smaller pieces by ice, glacier or water ? Chemical weathering, physical weathering, deposition, pollution
Answer:
deposition I hope this helps!!
Explanation:
Answer:physical weathering
Explanation:
Which is an example of an object increasing its kinetic energy
Question 3 options:
an airplane after landing on a level runway.
a rocket before launch.
a train stopped at the station.
a mouse running faster after spotting a cat.
Answer:
The answer to this question is the A choice. A rocket before launch.
Explanation:
In the definition of kinetic energy, it says: In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.
THIRTY POINTS I NEED HELP HURRY What is the volume of the cone?
Answer:
V=πr2h 3
Explanation: I would give more but need more i information
Answer:there u go
Explanation:The volume V of a cone with radius r is one-third the area of the base B times the height h . Note : The formula for the volume of an oblique cone is the same as that of a right one. ... If the heights of a cone and a cylinder are equal, then the volume of the cylinder is three times as much as the volume of a cone
Which is greater 50 degree celcius or 50 degree fahrenheit?with solution plz.....
Answer: 50 degrees Celsius is hotter than 50 degrees F. 50 degrees Celsius is half way between freezing and boiling
a local reaction is when a chemical enters the bloodstream? true or false
Answer:
true!
Explanation:
lonic bonds form between metals and
o metalloids O nonmetals o metalloids
two or more atoms joined together form a _______
Answer:
When two atoms join together they make compounds
Explanation:
A molecule is formed when two or more atoms join together chemically. If atoms combine that are of two or more different elements, we call that a compound. All compounds are molecules, but not all molecules are compounds.
Which statement is true about molarity and percent by mass? (3 points)
Molarity is the amount of solute in 1L of solution while percent by mass is the ratio of the mass solute to the mass of solution multiplied by 100. Both quantities are used measure the amount of solute in solution.
What is molarity and percent by mass?The question is incomplete however, I will try to explain molarity and percent by mass.
The term molarity means the number of moles of a substance is 1 L of solution while the percent by mass is the ratio of the mass solute to the mass of solution multiplied by 100.
Both molarity and percent by mass shows the amount of solute in a solution.
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Answer:
Both are ratios of the amount of solute over the amount of solution/
Explanation:
took test.
true or false, vaporization that occurs at the surface of a liquid is called evaporation
Answer:
True
Explanation:
Vaporization that happens below the surface is boiling, above the surface is evaporation :)
Answer:
True
Explanation:
it evaporates because of the temperature difference
What is the name of the following chemical compound?
Answer: Dinitrogen pentoxide
Explanation:
Answer:
Dinitrogen Pentoxide
Explanation:
How many moles are in 1.23 X 1050 atoms of calcium carbonate, CaCO3?
Answer:
Explanation:1 mole is equal to 1 moles CaCO3, or 100.0869 grams.
Provide background information about different types of chemical reactions.
Synthesis Reactions
Decomposition Reactions
Single Replacement Reaction
Double Replacement Reaction
Combustion
Then explain, in a general sense, how you will determine which of the above types of reactions are occurring in your experiments.
Answer:
.
Explanation:
-Synthesis reactions are reactions that appear when two distinct atoms or molecules engage to structure a specific molecule or compound. Most of the time, when a synthesis response occurs, electricity is launched and the response is exothermic. However, an endothermic consequence is additionally possible.
-A decomposition response starts offevolved from a single substance and produces extra than one substance; that is, it decomposes. One substance as a reactant and greater than one substance as the merchandise is the key attribute of a decomposition reaction. For example, in the decomposition of sodium hydrogen carbonate (also recognized as sodium bicarbonate)
-A single-replacement response (sometimes referred to as a single-displacement reaction) is a chemical response in which one aspect is substituted for every other factor in a compound, producing a new aspect and a new compound as merchandise
-A double-replacement response (sometimes referred to as a double-displacement reaction) takes place when components of two ionic compounds are exchanged, making two new compounds. A attribute of a double-replacement equation is that there are two compounds as reactants and two distinctive compounds as product
-A combustion response happens when a reactant combines with oxygen, many instances from the atmosphere, to produce oxides of all different factors as products; any nitrogen in the reactant is transformed to elemental nitrogen, N2. Many reactants, referred to as fuels, incorporate normally carbon and hydrogen atoms, reacting with oxygen to produce CO2 and H2O
A chemical reaction may involve one or more reactants to yiled one or more products.
Types of reactionsBelow we are going to discuss the types of reaction under the following headings;
Synthesis reaction - This is a reaction in which two or more substances come together to yiled a single product.
Decomposition reaction - This involves the breakdown of a substance into new substances.
Single Replacement Reaction- This is a type of reaction in which an atoms replaces another in a compound.
Double Replacement Reaction - This is a reaction in which cations exchange anion partners in a reaction
Combustion - This is a reaction in which a substance is burnt in oxygen.
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PLS PLS PLS HELP ME I WILL MARK YOU BRAINLYEST PLSSSSS :((
Kate wrote the steps of the carbon cycle to describe how carbon is cycled through specific organisms. The steps are in random order.
1 - The rabbit decomposes.
2 - The rabbit eats the carrot plant.
3 - The carrot plant takes in carbon dioxide from the air during photosynthesis.
4 - Carbon compounds are returned to the soil.
Which lists the steps in order?
2, 3, 1, 4
3, 2, 1, 4
3, 4, 2, 1
2, 4, 3, 1
3, 2, 1, 4
Further explanation:The process of photosynthesis is the process of converting carbon dioxide and water into energy in the form of carbohydrates using sunlight. Usually done by plants that have leafy za called chlorophyll.
Carbohydrates themselves are formed from the C-carbon, H-hydrogen and O-oxygen components
Rabbit food is carrots that contain carbohydrates, which are part of the photosynthesis process
3. The carrot plant takes in carbon dioxide from the air during photosynthesis.
Reaction
6CO₂ + 6H₂O ⇒ C₆H₁₂O₆ + 6O₂
2. The rabbit eats the carrot plant.
Rabbits meet their carbohydrate source for energy by eating carrots
1. The rabbit decomposes.
Rabbits in time will experience a process of decomposition
4 - Carbon compounds are returned to the soil.
The carbon content in rabbits will also be decomposed into the soil again
Answer:
3,2,1,4
Explanation:
6CO2 + 6H20 --> C6H12O6 + 602
What is the total number of grams of water needed to make 6.2 moles of CoH1206?
79.5 g
402.9
670.2 g
381.2 g
plsss help
will mark BRAINLIEST
Answer:
c
Explanation: just a chemachal
Using the Assignment: Locating the Epicenter, What was the length of the radius of the circle of from the Buenos Aires station? (in cm)
Question 1 options:
3.2 cm
4.8 cm
5.76 cm
8 cm
The illustration below shows the human skeletal system. Use the illustration to any questions at follow
Skull
Facial Cranium
bones
Clavice
Scapula
Humerus
Vertebral
column
Sternum
Una
Ribs
Radius
Sacrum
Carpals
Metacarpals
Phalanges
Tarsels
-Femur
-Patella
-Tibia
Fibia
Metatarsels
Phalanges
Using the illustration, which function do the bones of the skull mainly perfom?
A. They allow movement
B. They produce proteins
C. They protect tissues and organs
D. They connect muscles to tissues
im pretty sure its C, if im right please give me brainlist
The function where the bones of the skull mainly perfom should be that they protected the tissue and organs.
What is tissue and organs?Here the tissue and organs should be considered as the basic structural units with respect to the bodies.
Here the tissues should be comprise of the cell collections that have the same kind of function while on the other hand, the organ should be the tissue collections.
Therefore, it protected the tissue and organs.
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How might water high specific heat capacity affect energy distribution and temperature on earth
Answer:
Water can hold a lot of heat inside it and as the climate starts getting cold, the water releases the heat which heats up the climate
Due to the fact that water has a high heat capacity, its temperature has a very limited range, which causes the coastal areas close to having a similar small daily and seasonal temperature range.
What is specific heat capacity?"When the temperature of a material rises 1 K (or 1 °C), the amount of heat (J) absorbed per unit mass (kg)".
When the weather begins to grow chilly, water releases the heat it has stored inside, warming the environment.
High specific heat of the water makes it temperature resistant, and it helps the earth to maintain its temperature and helps organisms to maintain their functions at a constant temperature of the earth.
Thus, the normal temperature is necessary for maintaining the temperature of the earth and the water bodies maintain the temperature of the earth.
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How many grams are there in 2.34x10^23 atoms of Cu?
The mass of the 2.34 × 10²³ atoms of copper is equal to 24.68 grams.
What is Avogadro's number?The Avogadro constant can be defined as the proportionality factor that the number of constituent particles in a sample with the amount of substance.
Avogadro’s number can be described as a dimensionless number that represents the number of entities in one mole of any substance. These elementary entities can be molecules, atoms, ions, electrons, or protons, etc.
Avogadro’s constant has a value approximately equal to 6.022 × 10²³ mol⁻¹.
Given, the number of atoms of copper = 2.34 × 10²³
The atomic mass of Cu Copper = 63.5 g/mol
So 6.022 × 10²³ atoms of Cu have mass = 63.5 g
Then 2.34 × 10²³ Cu atoms will have mass = [tex]\frac{63.5 \times 2.34 \times 10^{23}}{6.02 \times 10^{23}}[/tex] = 24.68 g
Therefore, 24.68 grams of Cu are there in 2.34 × 10²³ atoms of Cu.
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1. What is the atomic mass of hydrogen if 99.985% is hydrogen-1 and 0.015% is hydrogen-2?
The atomic mass of Hydrogen : 1.02985
Further explanationIsotopes are elements that have the same Atomic Number (Proton)
Atomic mass is the average atomic mass of all its isotopes
In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu
An atomic mass unit = amu is a relative atomic mass of 1/12 the mass of an atom of carbon-12.
Mass atom X = mass isotope 1 . % + mass isotope 2.% ..
99.985% is hydrogen-1 and 0.015% is hydrogen-2
The atomic mass of Hydrogen :
[tex]\tt atomic~mass~H=0.99985\times 1+0.015\times 2\\\\atomic~mass~H=1.02985[/tex]
Steel has a density of 7.8 g/cm3. What is the volume of a 78-gram piece of steel?
Answer:
10 cm³Explanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\[/tex]
From the question we have
[tex]volume = \frac{78}{7.8} \\ [/tex]
We have the final answer as
10 cm³Hope this helps you