Answer:
I would say C and D
Explanation:
Hope this helps my good friend :)
According to the forces of attraction, the phase changes that occur at the same temperature are vaporization and condensation, melting and vaporization .
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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help me with this question please !
Answer:
its C
Explanation:
Wind turbines work on a simple principle: instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity.
Answer: I wanna say B
Explanation:
It makes the most scenes out of all of those answers let me know if im right:)
Boyles Law-
Variables that change:
Variables that remain constant:
Charles Law-
Variables that change:
Variables that remain constant:
Answer:
Boyles Law-
Variables that change: volume and pressure
Variables that remain constant: Temperature
Charles Law-
Variables that change: volume and temperature
Variables that remain constant: pressure
Explanation:
what is an example of a combustion reaction
if possible, can it come with an explanation pls
Answer:
An example of a combustion reaction is the burning wood in a fire.
Explanation:
In the combustion reaction, the carbohydrates in wood combine with oxygen to create water and carbon dioxide. This reaction is very energetic, and it generates heat and light as it releases said energy.
Hope this helps! Have a nice day! (And please mark me brainliest)
Which is the best explanation of why heat is released when
wood burns?
Select one:
A. Burning releases energy stored in chemical bonds.
B. Burning creates energy by increasing particle motion.
C. Burning destroys matter and creates energy from it.
D. Burning causes convection currents which create heat energy.
how many oxygen molecules are in 5.17g of oxygen gas
Answer:
is cool is cool goodcripopo
Solubility is the-
1.ability of a solute to dissolve in a solvent
2.ability of substances to allow electrons to flow
3.ability of particles to disperse evenly into another substance
4.inability of particles to disperse evenly into another substance
Which one of these?
What is known as the downhill movements of masses of rock and soil?
A. Mass wasting
B. weathering
c. giant erosions
Answer:
b
Explanation:
Answer:
Gravity drives all mass wasting.
Explanation:
If a Maritime Tropical Air mass begins in the Southern United States and keeps traveling North directly over the central USA, will it remain a Maritime Tropical air mass? Why?
Answer:
If a Maritime Tropical Air mass begins in the Southern United States and keeps traveling North directly over the central USA, it will turn into a polar air mass.
Explanation:
because Northern USA is colder than the South :)
What number should replace the question mark to show the number of C6H1206 (glucose) molecules in a balanced
chemical equation?
The moon stays in orbit around the Earth because of the Earth's
Answer:
Gravity
Explanation:
PLEASE HELP!!!What are the factors of climate change
Answer:
According to The genic variations in atmospheric compositions and proper use of land or the other factors the cahs climate change
Aluminum has metallic bonds between its atoms. Which statement BEST describes the
valence electrons in aluminum?
are exchanged with nonmetal atoms
are exchanged with other metal atoms
are localized and stay between metal atoms
are delocalized and move between metal atoms
Look at picture
ASAP please will mark as brainlist don’t got much time
Answer:
are delocalized and move between metal atoms
Explanation:
As the problem says, aluminum has metallic bonds. The main characteristic of metallic bonds is that the electrons are free to move between the metal ions (they are delocalized), thus being responsible for the good electrical conductivity of metals.
What’s the difference between directly
proportional and inversely proportional.
Answer:
Directly proportional:
A proportion of two variable quantities. when the ratio of two quantities are constant.
inversely proportional:
when one value decreases at the same rate that the other increases.
Explanation:
I hope this does help you, have a great day. :)
What is a mixture called when it has its different components mixed unevenly within the substance?
Heterogeneous mixture
Homogeneous mixture
Impure mixture
Pure mixture
Answer:
When 2 or more pure substances are mixed together they form a mixture. If the mixture has its different components mixed evenly within the substance it is a homogeneous mixture. Whereas if the mixture has its different components mixed unevenly within the substance it is a heterogeneous mixture
1. Find the mass of 0.89 mol of CaCl2.
Answer:
97.9
Explanation:
m= n*M
M CaCl2= 40+ 35.5*2= 110
m= 0.89*110= 97.9
The mass of the given mole of [tex]CaCl_2[/tex] is required.
The mass of the given compound is 98.78 g.
Molar mass of [tex]CaCl_2[/tex]
[tex]M=40.078+35.453\times 2=110.984\ \text{g/mol}[/tex]
n = Number of moles = 0.89 mol
Mass is given by
[tex]m=Mn\\\Rightarrow m=110.984\times 0.89\\\Rightarrow m=98.78\ \text{g}[/tex]
The mass of the given compound is 98.78 g.
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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.
what word means to bend light rays toward each other
Can someone pls help me?
Answer:
17
Explanation:
what is the independent variable
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:
What can describe the form of precipitation
Do you have a picture/answer choices?
Some forms of precipitation are rain, sleet, snow, and hail, if that's what you were asking for.
i need help asap :( i’ll give you brainliest
Answer:
a.0.837 moles of silver phosphate
b. 14.55
c. 2.61
Explanation: it is all about the molar ratio so the numbers of front of the molecular formulas there is a 3 in front of the silver nitrate and the other 2 we are asked abuoit have no number so that is a 1 so you are multiplying or dividing by that ratio whichever way you go
Among the alkaline earth metals in Group 2A/A, which is more reactive - beryllium (element 4) or strontium (element 38)?
Answer:
Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are harder and less reactive than the alkali metals of Group 1A.
Explanation:
4. (10 Points) Why would a mixture of gases in a 5 L balloon react faster than a
mixture of the same gases in a 10 L balloon?
Answer:
There is more space in a balloon with less gases meaning it can move around a lot faster
Explanation:
What are the elements in group 1 of the
periodic table called?
Answer:
there called alkali metals
Answer:
alkali metals.
Explanation:
Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
Calculate the amount of formula units in 2.10 moles of MgCl₂
How many molecules are in 0.25 mole of CO?
1.5 x 10 to 23rd power
What is the natural reason for the rising surface temperatures of the Pacific Ocean, drought in the western United States, and flooding on the Pacific coast of South America? Is it the Jet Stream, the Gulf Stream, La Niña, or El Niño? This is a science question about weather.
Answer:
El Niño
Explanation:
The natural reason for the rising surface temperatures of the Pacific Ocean, drought in the western United States, and flooding on the Pacific coast of South America Is the El Niño.
El Niño is a climate pattern that happens when there is an unusual warming of the surface temperatures of the Pacific Ocean. This occurs at an interval of two to seven years
During El Niño, the surface waters of the Pacific Ocean become warmer than average and this is as a result of the weakness of trade winds which blows over the entire Pacific Ocean. This makes the atmospheric pressure above the ocean to decrease.
El Niño brings rainfall nd flooding to South America and droughts in the western United States
hi please help, i will give 100 points
Explanation:
Boiling water:water heats up and bubbles physical change
Baking a cake: starts to cook into bread chemical change
Burning wood: turns into ash and burned wood chemical change
Painting a door: door changes color physical change
Answer:
water is yummy
Explanation:
What is the name of the following ionic compound?
AlF3
ASAP QUICCKKKM
Look at picture
Aluminum fluoride is the name of the following ionic compound. The recognised authority on chemical terminology and nomenclature is IUPAC.
IUPAC is the widely acknowledged authority on chemical terminology and nomenclature, and two IUPAC organisations play key roles in this activity: The Interdivisional Commission on Terminology, Nomenclature, as well as Symbols and Division VIII - Chemical Nomenclature or Structure Representation. Unambiguous, uniform, and reliable nomenclature as well as terminology for particular scientific fields are developed by IUPAC as one of its main activities. These recommendations are typically presented as glossaries of terms for particular chemical disciplines. Aluminum fluoride is the name of the following ionic compound.
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Using the empirical formula, calculate the formula weight of the compound. Use the periodic table to help you.
Type the correct answer in the box. Round your answer to three decimal places.
Answer:
The formula weight of the compound is
46.069 g/mol.
Explanation:
Determine the molar mass from the empirical formula (C2H6O) by multiplying the molar mass of each element in the compound by the number of atoms of it and adding the resulting masses of the elements:
molar mass of C2H6O = (2 × 12.011 g/mol) + (6 × 1.008 g/mol) + (1 × 15.999 g/mol) = 46.069 g/mol.