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guajiro [1.7K]
3 years ago
9

Many plants, such as the potato plant, avoid insect predation by producing highly toxic sap. However, the potato bug, unlike mos

t insects, has adapted to the toxins and can still eat the potato plant. In turn, over a long period of time, potatoes are likely to develop more chemical defenses against the potato bugs. This type of consistent adaptation between two species is known as
Chemistry
2 answers:
Sliva [168]3 years ago
4 0
This term is Maladaptation.
Hunter-Best [27]3 years ago
3 0
Chemical adaptation :)
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What are some ways you could lessen your water usage?
Gennadij [26K]
Ways to conserve water may inclue: 

<span>- turning off the water while brushing your teeth.
</span><span>- turning off the water while washing your hand.
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5 0
3 years ago
The standard enthalpy of reaction for the dissolution of silica in aqueous HF is 4.6 kJ mol–1 . What is the standard enthalpy of
Stels [109]

Answer:

B) ) –1615.1 kJ mol^–1

Explanation:

since

SiO2(s) + 4 HF(aq) → SiF4(g) + 2 H2O(l) ∆Hºrxn = 4.6 kJ mol–1

the enhalpy of reaction will be

∆Hºrxn = ∑νp*∆Hºfp - ∑νr*∆Hºfr

where ∆Hºrxn= enthalpy of reaction , ∆Hºfp= standard enthalpy of formation of products , ∆Hºfr = standard enthalpy of formation of reactants , νp=stoichiometric coffficient of products, νr=stoichiometric coffficient of reactants

therefore

∆Hºrxn = ∑νp*∆Hºfp - ∑νr*∆Hºfr

4.6 kJ/mol = [1*∆HºfX + 2*(–285.8 kJ/mol)] - [1*(–910.9kJ/mol) + 4*(–320.1 kJ/mol)]

4.6 kJ/mol =∆HºfX -571.6 kJ/mol + 2191.3 kJ/mol

∆HºfX = 4.6 kJ/mol + 571.6 kJ/mol - 2191.3 kJ/mol = -1615.1 kJ/mol

therefore ∆HºfX (unknown standard enthalpy of formation = standard enthalpy of formation of SiF4(g) ) = -1615.1 kJ/mol

8 0
3 years ago
Sort these molecules according to their polarity.
Alex

Answer:

Polar molecules- NH3, HBr

Nonpolar molecules- CO2, BF3, H2, CH4

Explanation:

NH3 is polar because the three N-H bonds are in non symmetrical trigonal pyramidal arrangement, hence there is a resultant dipole moment that makes the molecule polar. The electro negativity difference between hydrogen and bromine makes HBr a polar molecule.

CO2 and BF3 are non polar because the individual dipoles in the molecule cancels out. CH4 is composed of two atoms of almost similar electro negativities hence it is non polar. H2 is contains a homonuclear covalent bond hence the molecule is nonpolar.

5 0
3 years ago
Which objects are malleable tin fork and knife from a camping set, antique ceramic case, steel pole fence post, marble sculpture
LenaWriter [7]

Answer:

Tin fork and knife from a camping set, a steel pole fence post, and a copper coin.

Explanation:

Hope this halps. UwUz

7 0
3 years ago
The label on a pressurized can of spray disinfectant warns against heating the can above 130 degree fahrenheit . What are the co
Leviafan [203]

Answer : The temperature in degree Celsius and Kelvin is, 54.44^oC\text{ and }327.59K respectively.

Explanation :

The conversion used for the temperature from Fahrenheit to degree Celsius is:

^oC=(^oF-32)\times \frac{5}{9}

where,

^oF = temperature in Fahrenheit  

^oC = temperature in centigrade

The conversion used for the temperature from degree Celsius to Kelvin is:

K=273.15+^oC

where,

K = temperature in Kelvin

^oC = temperature in centigrade

As we are given the temperature in Fahrenheit is, 130

Now we have to determine the temperature in degree Celsius.

^oC=(^oF-32)\times \frac{5}{9}

^oC=(130^oF-32)\times \frac{5}{9}

^oC=54.44

Now we have to determine the temperature in Kelvin.

K=273.15+^oC

K=273.15+(54.44^oC)

K=327.59

Therefore, the temperature in degree Celsius and Kelvin are, 54.44^oC\text{ and }327.59K

3 0
3 years ago
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