What is thought to cause the Earth's magnetic field
Answer:
It is caused by currents of electricity that flow in the molten core.
Which substance do plants use to capture light energy from the sun? a) Carbon dioxide b) Chlorophyll c) Glucose d) Oxygen
Answer: chlorophyll
Explanation:
The substance that plants use to capture light energy from the sun is referred to as chlorophyll.
The chlorophyll is a colored pigment that is used by the plants for photosynthesis. The function of the chlorophyll is that it absorbs the energy from the sun which is then turned into a chemical energy.
Answer:
I don't know the answer to this either
Explanation:
sorry:(
HELPP ME ASAP
What is the percent composition of Nitrogen in dinitrogen trioxide?
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.
In this experiment, you made observations of the ______
and the ____
You used these observations to write the ____
In this experiment, you made observations of the reactant and the product.
You used these observations to write the balanced chemical equation.
What is chemical equation?The symbolic representation of chemical reaction is called chemical equation.The chemical equation should be balanced.
To learn more about chemical equation here.
https://brainly.com/question/12047033
#SPJ3
Answer:
{first part} reactants, products, balanced chemical equation, classify the reaction
{second part} color change, formation of a gas, formation of a solid
Explanation:
edg 23'
How many moles are in 187 grams of NH3?
11 moles
13.4
moles
3,179 moles
2,618 moles
Answer:
3126 moles
Explanation:
put them all together times them and add
Can someone pls help me?
Answer:
17
Explanation:
what is the independent variable
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
Question 2 of 10
Who developed the philosophical idea of the atom?
A. Boyle
B. Dalton
C. Aristotle
D. Democritus
SUBMIT
Answer:
The answer is D. Democritus
Explanation:
I did my research and it was Democritus' idea of the atom.
Directions: Fill in the blanks with the correct terms to complete the statements. Write your answer on your answer
sheet.
1. Landforms like tall_______
act as an obstacle to traveling air masses, forcing them to rise over the peaks.
2.A___________is likely to dissolve or decrease its wind speed when it passes over a mountain or a mountain range.
3. Bodies of water like________is the main factor in the formation of typhoon.
4. The air in bodies of water is__________due to the evaporation of water.
5. Warm air builds up or increases the__________of a tropical cyclone.
help this question plzzss
I gave brainlest...
Answer:
1. Mountain ranges
2.
3.pacific ocean ??
4.tempature
I'm not really sure on 2 bit trying to help you :)
Calculate the amount of formula units in 2.10 moles of MgCl₂
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).
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.
what word means to bend light rays toward each other
How does a flux capacitor deteriorate under high octane pressure?
A larger bullet does not necessarily have more momentum than a smaller bullet Explain why
Answer:
yes
Explanation:
a larger bullet weighs more then a smaller bullet so the smaller bullet goes faster.
Answer:
Explanation:
Momentum is dependent on mass and velocity. So, the smaller bullet can be moving at a much greater speed than the larger one.
For each problem, define whether you are calculating for a scalar or vector quantity. Show your work to receive full credit.
A ball travels 300 m in 2,000 secs going east. What is the velocity of the ball?
Answer:
I dont get what you need help with
Explanation:
Answer:
i dont get what your supposed to do either
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
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
Help please I have 10 min.
Answer:
i cant see the question. i can try to help if you tell me the question.
Explanation:
also how do i use the comments???
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.
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
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:
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?
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:
The moon stays in orbit around the Earth because of the Earth's
Answer:
Gravity
Explanation:
Please help thank you!
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.
Learn more:
https://brainly.com/question/14896336
https://brainly.com/question/13798430
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