Answer:
there are seven oxygen atoms
Explanation:
look look at the prefix hept- to help you answer this question
How can you measure the volume of an irregular shaped solid?
Answer:
If the object has an irregular shape, the volume can be measured using a displacement can. The displacement can is filled with water above a narrow spout and allowed to drain until the water is level with the tap. As the irregular object is lowered into the displacement can, the water level rises.
Explanation:
A tornado is formed by _____.
Answer:
wind..........................
In order for the process to be endothermic, the energy required to break the lattice has to be _______ than the energy released as the ions go into solution.
a. Greater
b. Less
Explanation:
I honestly believe the answer is greater
If the energy required to break the lattice is less than the energy released as the ions go into solution, then the dissolution of solute is endothermic.
An endothermic reaction is one in which energy is absorbed. This implies that the energy change of the reaction is positive.
Now, if the energy required to break the lattice is less than the energy released as the ions go into solution, then the process is endothermic and energy is absorbed.
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A sea anemone makes an ideal home for a clownfish. Its poisonous tentacles provide protection from predators and a clownfish makes its meals from the anemone's leftovers. A clownfish can help an anemone catch its prey by luring other fish toward over so that the anemone can catch them. What type of symbiotic relationship do the clownfish and the sea anemone have?
A. mutualism
B. commensalism
C. parasitism
D. consumerism
Answer:
Mutualism
Explanation:
They both benefit from the relationship
How can a colorless substance be made visible on a chromatography
Explanation:
s f colourless substances can be followed by the use of fluorescent adsorbents. Ultra-violet light of a wavelength absorbed by the adsorbed substance is employed. The part of the column containing adsorbed substance then appears as a dark band.
HOPE THSI HELPS HAVE A NICE DAY!
Answer:
Colourless substances can be followed by the use of fluorescent adsorbents. Ultra-violet light of a wavelength absorbed by the adsorbed substance is employed. The part of the column containing adsorbed substance then appears as a dark band.
can you help me on this stuff
(D)- Sea breezes are local winds that blow from an ocean or a lake
Hope this helped <3
what is ocean-ridge?
Answer:
A mid-ocean ridge is a seafloor mountain system formed by plate tectonics. It typically has a depth of ~ 2,600 meters and rises about two kilometers above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a divergent plate boundary.
Answer:
A mid-ocean ridge is a seafloor mountain system formed by plate tectonics. It typically has a depth of ~ 2,600 meters and rises about two kilometers above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a divergent plate boundary.
I hope it's helpful!
Your friend is describing an element that is commonly
found in household materials, malleable, and a good
conductor of heat and electricity. They say it is not very
reactive and is very similar to the other elements in its
group. Your friend's element is most likely which of these?
A. A transition metal
B. A noble gas
C. A halogen
D. An alkali metal
An element that is commonly found in household materials, malleable, and a good conductor of heat and electricity. They say it is not very reactive and is very similar to the other elements in its group as an alkali metal.
What is an alkali metal ?All the elements listed in column 1A of the periodic table—hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium—are classified as alkali metals. The fact that all of these metals contain one electron in their outermost layer of electrons binds them together.
The production of paper, detergents, and soap all need sodium hydroxide. In addition to being used as the electrolyte in alkaline, Ni-Cd, and Ni-MH batteries, potassium hydroxide is also used by farmers to make acidic soil more alkaline so that plants would grow better in it.
Vinegar, hydrochloric acid, and sulfuric acid are a few examples of the H = ion-containing compounds referred to as acids. Alkalis are a class of substances that feel soapy and contain the OH = ion.
Thus, option D is correct.
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PLEASE HELP! WILL MARK BRAINIEST IF ANSWERED CORRECTLY.
Ocean water is salty. There are many type of salts (ionic compounds), but the salt that causes most of the saltiness in ocean water is sodium chloride (NaCl). (This is the same chemical as the table salt in your salt shaker.)
Use the concept of polarity to describe in detail how sodium chloride (NaCl) dissolves in ocean water.
Answer:
H2O is a polar molecule
the H is slightly positive and the O is slightly negative so the Na is attracted to the O side of the water molecule and the Cl is attracted to the H side of the water molecule
Explanation:
A catalyst of copper mixed with zinc oxide and alumina is used in industry for this production of methanol. Explain the function of the catalyst.
Answer:Copper oxide + Hydrogen → Copper + Water
Copper sulfate + Zinc → Zinc sulfate + copper
Aluminium + Copper chloride → Aluminium chloride + copper
Copper + Oxygen → Copper oxide
Explanation:
Chemical reactions involves chemical combination of compounds or elements as reactants to form other compounds or elements.
In this case, various reactants given will react exhibiting different types of chemical reactions to form products.
First reaction
Aluminium + Copper chloride → Aluminium chloride + Copper
This is a single displacement reaction in which aluminium which is a more reactive element than copper displaces copper from its salt.
Second reaction
Copper oxide + Hydrogen → Copper + water
It is another example of a single replacement reaction. Hydrogen displaces less reactive metals from their oxide to form water and the metal.
Third reaction
Copper sulfate + Zinc → Zinc sulfate + copper
It is another single replacement reaction.
Zinc is more reactive than copper and therefore replaces copper from its salt solution.
Fourth reaction
Copper + Oxygen → Copper oxide
It is a synthesis reaction.
A synthesis reaction is a reaction in which elements or small compounds combine to form single compound.
If you have 3.62 moles of Tin (Sn), how many grams do you have?
Answer:
Use molar mass:)
Explanation:
3.62 mol of Sn ([tex]\frac{118.7gramsSn}{mol}[/tex])=429.694
Since 3.62 has 3 sig figs, limit 429.694 to 3
= 430
PLEASE HURRY IM TIMED Atoms are made up of electrons, neutrons, and____?
protons
compounds
mixtures
water
Answer: protons
Explanation:
A. Protons I learned this in class
A plane takes 230 passengers from New York to Chicago in 3 hours.
New York and Chicago are 789 miles away from each other. What is the
average speed of the flight in mph?
Answer:263mph
Explanation:
The average speed of the flight in mph is 263 miles per hour.
What is speed?In everyday use and in kinematics, the speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval,the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero. Speed is not the same as velocity.
Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second (m/s), but the most common unit of speed in everyday usage is the kilometre per hour (km/h) or, in the US and the UK, miles per hour (mph). The average speed is calculated as, distance/time =789/3=263 miles per hour.
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PLEASE I NEED HELP!!!
The number to the lower side of an element (O2) is a............and the number in front of a compound or element is a ...............
a
Superscript and subscript
b
Superscript and coefficient
c
Coefficient and subscript
d
Subscript and coefficient
Subscript and coefficient
Which of the following is
NOT a part of the digestive
system?
A
Mouth
B Esophagus
C Intestines
D
Kidneys
1137 AM
o search
B
Answer:
Kidneys
Explanation:
I learned about it :)
Answer:
DkidneysExplanation:
I hope it helps
HELP!!!!! ILL GIVE BRAILY AND THIS IS 10 POINTSSSSSSSS
Which substance will have the greatest increase in temperature when equal masses absorb equal amounts of thermal energy? (Specific heats are given in parentheses.)
ethyl alcohol (2.43 J/gC)
ammonia gas (2.1 J/gC)
water (4.18 J/gC)
lead (0.46 J/gC)
Answer:
Lead (0.46j/g•C,
Explanation:
because it has the lowest specific heat)
Difference between emprical and molecular formula
Answer:
The key difference between empirical and molecular formulas is that an empirical formula only gives the simplest ratio of atom whereas a molecular formula gives the exact number of each atom in a molecule.
The equation for the formation of water from hydrogen gas and oxygen gas is 2H2 +
02 → 2H20. How many grams of water can be made from 64 g of oxygen gas?
72g
180 g
405 g
720 g
Answer:
72g
Explanation:
Write about similarities and the differences of the plant and animal cell
Answer:
Mark me as brainliest pls
Explanation:
similarities: Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. Both also contain similar membranes, cytosol, and cytoskeletal element
differences: A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.
1. What type of change (physical or chemical) happened inside of the flask when you dropped the
baking soda into the vinegar? What evidence do you have?
Calculate the number of molecules in 64.5 grams of Nitrogen monoxide, NO
Answer:
N=9.933×10^23
Explanation:
[tex]n = \frac{m}{mr} [/tex]
N=n×la
A group of earth science students were investigating in the laboratory. They took granite rock and limestone samples and massed
them on a balance. Then, students placed the rock samples in closed plastic vials. The students shook them vigorously for thirty
minutes. Students then massed the rocks again. What is the dependent variable in this experiment?
es )
A)
Why does granite rock break down more quickly?
B)
How do rocks interact during mechanical manipulation?
C)
Which rock type changes more due to physical weathering?
D)How does granite change shape after mechanical breakdown?
Answer:
Which rock type changes more due to physical weathering?
Explanation:
A dependent variable is the effect obtained by manipulating a cause. Hence, when you are carrying out an experiment, the variable that you manipulate is the independent variable while the effect that it produces is the dependent variable.
Therefore, when the both rock samples are shaken, the mass after shaking shows the extent to which the rock samples break down after a physical weathering process. This is the dependent variable because the extent of physical breakdown depends on the type of rock.
plz help me i swear will mark you brainiest
Answer:
C is the correct answer 35% and 9%
A 0.50 M solution of H Br is to be poured into a beaker that initially contains 50 g of solid CaCO3. Determine the volume of H Br that will be needed to completely react with the 50 g of solid CaCO3.
Answer:
2 liters of HBr is needed to completely react with the 50 g of salt.
Explanation:
First of all, we determine the reaction:
2HBr + CaCO₃ → CaBr₂ + CO₂ + H₂O
We need to calculate, moles of carbonate in order to state the stoichiometry (1:2)
50 g . 1mol / 100.08g = 0.499 mol
1 mol of salt need 2 moles of acid to react, according to stoichiometry
Then, 0.499 moles of salt, will react with (0.499 . 2)/1 = 0.999 moles
As we have the [HBr], we can calculate the volume.
M = mol/L → we replace → 0.50 mol/L = 0.999 mol /L
L = 0.999 mol/0.50 mol → 1.99 L ≅ 2L
how many moles are there in 1.00 x 10^22 formula units BaCl2
Help please I am so lost my teacher is no help
Answer:
B - CALCIUM
Explanation:
Hopes it helps
I need help with this question. Thank you!
Answer:
J. All of these
Explanation:
I hope it helps.
I think it would be "all of the above" because all the things the wild hogs do are impacting all of the answers stated there.
hope that helped!!
What different about paratisim compared to the other biological relationships such as mutualism,predation, competition, and commensalism
A parasitic organism causes harm to other organisms as a result of the symbolic relationship
The parasite must utilize a host organism that may or may not die as a result of the relationship
The host is neither helped nor hurt by the relationship and interaction with the parasitic organism
Both the parasite and the host are helped by the relationship and interaction with the parasitic organism
Answer:
Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed
Symbiosis is a close relationship between two species in which at least one species benefits.
Mutualism is a symbiotic relationship in which both species benefit.
Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected.
Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.
Answer:
B..
Explanation: Internet
What is the name of the the multi valence compound SnH4?
Which of the following is an example of potential energy? 1.bouncing ball 2.swinging a bat 3.book on a table 4.falling leaf
Answer:
book on a table
Explanation:
a book on a table is an example of potential energy because when you slide the book off the table or just slide it in general it becomes kinectic energy