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Angelina_Jolie [31]
3 years ago
6

Write about grass land in long question​

Chemistry
1 answer:
dmitriy555 [2]3 years ago
8 0

Grasslands are areas where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur naturally on all continents except Antarctica and are found in most ecoregions of the Earth. Furthermore, grasslands are one of the largest biomes on earth and dominate the landscape worldwide.[1] They cover 31-43% of the Earth's land area. There are different types of grasslands: natural grasslands, semi-natural grasslands, and agricultural grasslands.[1]

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What type of isotope undergoes radioactive decay?
Dominik [7]

Answer:

All elements with 84 or more protons are unstable; they eventually undergo decay. Other isotopes with fewer protons in their nucleus are also radioactive.

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3 years ago
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Why does heating increase the speed at which a solute dissolves in water?
aivan3 [116]
For many solids dissolved in liquid water, the solubilityincreases with temperature. Theincrease in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
8 0
3 years ago
A canister of 2.00 moles of helium has a volume of 30.0 L and is at a temperature of 293 Kelvin. what is the pressure of this ga
MAXImum [283]

Answer:

P = 162 KPa

Explanation:

Given data:

Number of moles = 2 mol

Volume of gas = 30.0 L

Temperature of gas = 293 K

Pressure of gas = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

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T = temperature in kelvin

P = nRT/V

P = 2 mol ×0.0821 atm.L/ mol.K  ×293 K/ 30.0 L

P = 48.11 atm.L/  30.0 L

P = 1.6 atm

atm to kelvin:

1.6×101 = 162 KPa

5 0
3 years ago
An apprentice jeweler determines the density of a sample of pure gold to be 20.3 g/cm3. the accepted value is 19.3 g/cm3. what i
frosja888 [35]
We are tasked to find the percent error of the jeweler's density measurement through the formula:

%Error= Absolute Value(Experimental Value - Theoretical value) x 100%/ Theoretical Value

We are given by the problem,
Experimental Value=20.3 g/cm3
Theoretical Value= 19.3 g/cm3
By Substituting the details,
%Error= Absolute Value(20.3 g/cm3 - 19.3 g/cm3) x 100% / 19.3 g/cm3
%Error=Absolute Value (1)/19.3
%Error= 100/19.3
%Error= 5.18%

Therefore, 5.18% is the percent error committed by the jeweler<span />
3 0
4 years ago
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Explain why you agree or disagree with this statement
Gennadij [26K]

Answer:

Agree

Explanation:

The way it makes electicity is that it rubs together fast enother it makes the particles move.

Sorry I can't do better

8 0
3 years ago
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