Answer:
In the future, hydrogen will join electricity as an important energy carrier, since it can be made safely from renewable energy sources and is virtually non-polluting. It will also be used as a fuel for 'zero-emissions' vehicles, to heat homes and offices, to produce electricity, and to fuel aircraft.
Answer:
It can be a wonderful fuel, because unlike other sources of power generation, it produces no greenhouse gas and hence does not contribute in polluting the environment or causing global warming. However it can be a dangerous fuel as well, as it is highly flammable.
For the following reaction:
CaO(s) + CO2(g) ⇄ CaCO3(s) ΔH = -178.5 kJ
Which of the following changes would increase the rate of the forward reaction?
Add CaO
Remove CaO
Add CO2
Remove CO2
Add CaCO3
Remove CaCO3
Increase temperature
Decrease temperature
Increase pressure
Decrease pressure
The concept Le Chatelier's principle is used here to determine the effect of change of concentration, pressure and temperature on the state of equilibrium.
What is Le Chatelier's principle?According to Le Chatelier's principle, If a system in equilibrium is subjected to a change in concentration, pressure or temperature the equilibrium shifts in the direction that tends to reduce the effect of the change.
Here adding CaO increases the rate of forward reaction. If the concentration of any reacting species is increased, the equilibrium will shift in the forward direction.
The given reaction is exothermic in forward direction. So the increase of temperature shift the equilibrium to the backward direction and the decrease in temperature shift the equilibrium to the forward direction.
Here increasing pressure will shift the equilibrium to the forward direction accompanied by a decrease in the number of moles.
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Something that an animal does that is driven by instinct is called a??
1.phycial adaption
2.behavioral adaption
Answer:
2. Behavioral Adaption
Explanation:
I know about this, I think this is the answer. Try it out!!
is vineasel edible??????????????????????/
Answer:
no it's not edible
The reproductive organs of the male
The reproductive organs of the female are the
The ovaries produce the
The testes produce the
Word Bank
ovaries, testes, sperm, eggs
Answer:The reproductive organs of the male: Testes
The reproductive organs of the female are the: ovaries
The ovaries produce the: Eggs
The testes produce the: Sperm
The forces exerted between electric charges at a distance is evidence that each charge is surrounded by an electric _____.
The forces exerted between electric charges at a distance is evidence that each charge is surrounded by an electric field.
The forces exerted between electric charges at a distance is evidence that each charge is surrounded by an electric field.
The force exerted on an electric charge at any given distance is determined by applying coulomb's law as shown below;
[tex]F = \frac{kQ^2}{r^2}[/tex]
The electric field strength of the charge is given as;
[tex]E = \frac{F}{Q}[/tex]
F = EQ
where;
E is the electric field Q is the electric chargeThus, we can conclude that the forces exerted between electric charges at a distance is evidence that each charge is surrounded by an electric field.
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No links right answers only!! 9recipitation like in the Arctic tundra.
A. In the summer, it typically rains less van 5 cm (2 inches) while in Winter it rains 25-44cm ( 10 -17 inches)
B. The range is form 15-25cm (6-10 inches) a year where most falls as snow
C. There is an average of 20-35 inches of rainfall a year
D. It can also be called a cold desert due too its lack of precipitation
Answer:
B . the range is from 15-25 cm(6-10 inches) a year where most falls as snow
i will give brainly to correct answer (if you dont get brainly lmk if you want me to make a fr33 p01nts post so i can give you it)
Answer:
The stoma allows the intake of oxygen gas in photosynthesis and releases oxygen gas in respiration.
Explanation:
Through photosynthesis, leaves turn light energy into food. Through pores, or stomata, leaves “breathe” in carbon dioxide and “breathe” out oxygen. Leaves also release excess water, much like we sweat.
Help No links Temperate grasslands are a division of a larger biome grouping of v grasslands that includes Tropical
Tropical savannas
Desert
Temperature grasslands
Tropical rainforest
Answer:
tropical Savannas. hope helpful answer
Where is the ozone layer located (which layer of the atmosphere
It is located in the Stratosphere.
Answer: in stratosphere
BRAINLIESIT IF CORRECT
Light waves are electromagnetic waves that can travel through a vacuum.
True
False
7
Answer: True
Explanation:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
Hope This Helps!
#[tex]AnimePower[/tex]
MULTIPLE CHOICE QUESTION + DIAGRAM IN PICTURE
CORRECT ANSWER = BRAINLIEST
Answer:
B!
Explanation:
None of the other answers work with the chart correctly :)
The rainforest contains what v percentage of all of the species in the world
25%
50%
75%
10%
Answer:
50%
Explanation:
Please let me know if its right.
NO LINKS RIGHT ANSWERS ONLY!!!!!!!
-----------Refers to the soil that is frozen solid all year round does not even melt in the summer.
Frost
Glaze
Permafrost
Verglas
The answer is "permafrost". Permafrost is soil/ground that stays frozen year-round.
The functions of two physical structures of plants are described below: (2 points)
Structure 1: Holds the leaves of the plant toward the light.
Structure 2: Helps reduce water loss.
What statement is true about the functions?
a
Structure 1 is the stamen and Structure 2 is the pistil.
b
Structure 1 is the stem and Structure is the waxy covering.
c
Structure 1 is the pistil and Structure 2 is the fuzzy hair.
d
Structure 1 is the waxy covering and Structure 2 is the stamen.
Can I get some help plzz
Answer:
It's row in the table
Explanation:
It is the number of electrons at the outermost shell of an electron eg. The valence electron of sodium is one.
NO LINKS RIGHT ANSWERS ONLY!!!!
How do waves form?
A. Ocean waves form as wind is absent
B. Ocean waves form as wind moves across the surface transferring it's energy to the water
C. Ocean waves form as salinity increases
D. Ocean waves don't form
10 points please help
Please help this is due today!
Military submarines incorporate multiple technologies in order to remain silent and undetected in the water. Submarine crews are cautioned not to make loud sounds or drop tools or equipment to avoid detection. Use what you have learned about the factors that affect sound transmission to explain why submarines have to be careful not to make sounds while other military craft, such as airplanes or tanks, don't have to worry about the sounds they make? Use evidence and scientific reasoning to support your response.
Answer:
Explanation:Military submarines are designed to roam the oceans undetected by enemies or spies. They rarely surface, except to establish radio contact or perform data communication with their respective headquarters. Otherwise, their job is to be as silent as possible.
Answer
Sorry if this is incorrect, but I think the reason submarines have to stay quiet is because they want to evade discovery by passive sonar.
Explanation:
My explanation is because passive sonar detects acoustic signals and sounds which are detected because sound travels faster in water compared to air.
Hope this helps!
What adoptions do trees have in the rainforest
Deep roots and spread their roots out over a great distance
Deep roots that do not spread out over a great distance
Short roots and spread out over a great distance
Short roots that do not spread over a great distance
BRAINLIESIT IF CORRECT
4
Answer:
the answer is vacum of space
Answer:
1. a medium
2.longitudinal
Read the following passage:
Wind and water carry sand, debris, and small pieces of rocks and deposit them in layers. These layers pile up and after many years form a single rock called Rock A. The movement of tectonic plates buries Rock A deep inside Earth. Heat and pressure change the mineral composition of Rock A and transform it into Rock B. Rock B comes out to the surface of Earth due to plate movements.
Which type of rock has been formed?
Group of answer choices
metamorphic
sendimentary
igneous
fossils
Answer: I think that it is either B or D
BRAINLIESIT IF CORRECT
Sound waves travel as particles of matter collide and transfer energy.
True
False
6
Answer:
True
Explanation:
Sound waves require a medium/substance to transmit through, for example, sound waves cannot travel through the vacuum of space . The medium, water or air, itself does not move in bulk with the wave . The medium's particles carry kinetic energy from one point to another . This is when the wave transmits through its medium, the particles simply vibrate as the wave passes through. The vibrations carry the energy from one particle to the next. This means that the sound wave is carried through the medium.
*Note: Sound waves need particles to travel but light does not.
No links The soil rainforest are______
nutrient rich
Nutrient poor soil
Mediocre
Rich in clay
Help Please. It's On Erosion. 15 Points
WILL GIVE LOTTA POINTS AND MAKE BRAINLIEST
Which compound would not neutralize hydrochloric acid?
A. Sodium Hydroxide
B. Sodium Carbonate
C. Sodium Chloride
D. Sodium oxide
DON SPAM ONLY WRITE IF YOU KNOW THE ANSWER
Answer:
A sodium hydroxide
Explanation:
After reading this answer the question:
Why might hydrogen be a wonderful fuel for the future?
Explanation:
hydrogen will join electricity as an important energy carrier since it can be made safely from renewable energy sources and is virtually non-polluting
Which compound would not neutralize hydrochloric acid?
A. Sodium Hydroxide
B. Sodium Carbonate
C. Sodium Chloride
D. Sodium oxide
Answer:
its B
Explanation:
Choose all that apply for grasslands
No trees or shrubs
Rainfall is low
Occur in all climatic zones
Contains grasses and Woody plants
Answer:
-rainfall is low
-occur in all climate zones
-contains grasses and woody plants
The grasslands occur in all climatic zones, contains grasses and Woody plants and rainfall is low. Therefore, option B, C and D are correct.
What do you mean by the grassland ?The grassland biome is made up of broad, open grassy areas. They are kept healthy by animals that feed on them and frequent fires. There are two main types of grasslands: savannas and temperate grasslands.
Grasslands are grassy areas that are often flat, open, and continuous. In high latitudes, they are usually located between subtropical deserts and temperate forests.
Due to the environment, only grasses can thrive in grassland areas. Low precipitation rates are adequate for grasses but not for a forest of trees. Frequent fires also help to preserve grassland ecosystems. Grasses are ideal for recovering from a fire.
Thus, option B, C and D are correct.
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A chemist performs the same tests on two white solids, A and B. The results are shown in the table below.
image
Which result identifies the substances, A and B, correctly?
The melting point of a substance is characteristics to it. Hence, we can identify a compound by calculating its melting point. If the solids are pure they will give their characteristic actual melting point.
What is melting point?Melting point of a substance is the temperature at which it converts from solid state to liquid state where, the two phases are in equilibrium. Melting point is dependent upon the intermolecular forces, molar mass, temperature and presence of impurities.
Melting point of a pure substance is a characteristic feature for it. Hence, we can qualitatively test a compound using its melting point and using standard dats of melting points we can identify the substance.
Conductivity, solubility etc. are not characteristic for a substance and can be similar to other solids. Therefore, option A melting point tests helps to identify A and B.
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Humidity refers to the moisture in the air or the amount of water vapor found in the air and it is very high and rainforest around 80%
true or false