Answer:
They make food by using chemosynthesis.
Explanation:
Deep-water bacteria, known as chemoautotrophs, make their own food through a process called chemosynthesis, using chemicals like hydrogen sulfide from hydrothermal vents instead of sunlight.
Some deep-water bacteria in the ocean are known as chemoautotrophs, which can produce their own food by using chemical energy from hydrothermal vents. Unlike plants, they do not use sunlight for photosynthesis. Instead, they rely on chemosynthesis for their energy supply. In this process, bacteria convert chemicals from the vents into usable energy or food. For example, some bacteria use hydrogen sulfide, a chemical abundant in the deep ocean, for chemosynthesis. This biological process allows these deep-water bacteria to thrive in environments where sunlight is not available.
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An atom consists of a nucleus of protons and neutrons, surrounded by electrons. Each of the elements in the periodic table is classified according to its atomic number, which is the number of protons in that element's nucleus. Protons have a charge of +1, electrons have a charge of -1, and neutrons have no charge. Neutral atoms have the same number of electrons and protons, but they can have a varying number of neutrons. Within a given element, atoms with different numbers of neutrons are isotopes of that element. Isotopes typically exhibit similar chemical behavior to each other.
decomposition
single replacement
double replacement
combustion
Answer: A. synthesis or combination reaction
B. Double replacement reaction
C. Single replace ment reaction
D. Combustion
E. Decomposition
Explanation: A is synthesis since A + B --> AB. It produces a single product
B. is double replacement since Ca replaces Al and vice versa
C is single replacement where Mg kicks out Fe in the product formation
D is combustion where a hydro carbon rteacts with oxygen gas to form CO2 and H2O
E is decomposition ( AB) ---> A + B
Answer:
A. Synthesis
B. Double replacement
C. Single replacement
D. Combustion
E. Decomposition.
27 1/3 days, 24 hours
27 1/3 days, 29 1/2 days
365 1/4 days, 29 1/2 days
24 hours, 29 1/2 days
thank you for your time
The statement is False, because compound made up of elements which may have different properties. water is made up to oxygen i.e. gas and hydrogen which is also a gas, while water is a liquid and a good solvent.
Water can be amphoteric in nature, as it act as both acid as well as a base, highly viscous in nature due to the force of attraction exists between molecules.
Water can be used in Redox reaction as it help to get dihydrogen molecules quite easily, the dielectric constant of water is also high, form many different connections and attachments with other chemical compounds known as hydrates.
A substance show the normal behavior when it reacting to heat, like that compounds expand after exposed to heat and decreasing their density, and after some time their density increases, and matter contracts when cooled, while in case of water this property is opposite.
Below the temperature of 4 degrees Celsius the water behaves ordinarily, however when it is cooled further, its unusual properties are being observed.
when water cooled, the density slowly increases, further cooled down leads to decrease in the density of water and the matter expands, which is called as the anomalous property of water occurs between temperatures of 4 degrees Celsius to 0 degrees Celsius.
Learn more about water, here:
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A. A liquid changes to a solid.
B. A solid changes to a gas.
C. A gas is released from a liquid.
D. A liquid changes to a gas.
Option C:
A gas is released from a liquid
Hope this will help :)
Answer:
Mass = 76.176 g
Explanation:
Given data:
Mass of lead(II) chloride produced = 62.9 g
Mass of lead(II) nitrate used = ?
Solution:
Chemical equation:
Pb(NO₃)₂ + 2HCl → PbCl₂ + 2HNO₃
Number of moles of lead(II) chloride:
Number of moles = mass/molar mass
Number of moles = 62.9 g/ 278.1 g/mol
Number of moles = 0.23 mol
Now we will compare the moles of lead(II) chloride with Pb(NO₃)₂ from balance chemical equation:
PbCl₂ : Pb(NO₃)₂
1 : 1
0.23 : 0.23
Mass of Pb(NO₃)₂:
Mass = number of moles × molar mass
Mass = 0.23 mol × 331.2 g/mol
Mass = 76.176 g