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3 years ago

Someone help me please

Biology

2 answers:

never [62]3 years ago

7 0

2) 50%
3) 50%
4) 0%
5) 50%

puteri [66]3 years ago

4 0

You have to fill out the chart first so itll be GG, Gg, Gg, gg for the chart ( left to right)

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Can youuuuu help me plsss

Yanka [14]

D, chaotic and gruesome.

4 0

3 years ago

Read 2 more answers

How is enthalpy used to predict whether a reaction is endothermic or exothermic?

Radda [10]

Answer:

$329.48 KJ/mol$ heat is released by the combustion of $2 mol$ of methane

Explanation:

The value of enthalpy determines whether the reaction is exothermic or endothermic. If the enthalpy change is positive, then the reaction is endothermic (heat or energy released) and if the enthalpy change is negative then the reaction is exothermic (heat or energy absorbed).

$2CH_4(g)+4O_2(g) => 2CO_2(g)+4H_2O(g)$

$\Delta H \ reaction=[ 2(\Delta HfCO_2)+ 4(\Delta HfH_2O)]-[2(\Delta HfCH_4)+4(\Delta HfO_2)]$

= $2 ( -(393.5 KJ)/mol)-[2( -74.6 KJ/mol)+4(-241.82 KJ/mol)]$

$= -787 KJ/mol-[ -149.2 KJ/mol-967.28 KJ/mol]$

$= -787 KJ/mol+1116.48 KJ/mol$

$=329.48 KJ/mol$

In this question, the enthalpy of formation has positive value and hence the reaction is endothermic in which the heat is released.

3 0

3 years ago

The partial pressure of CO2 is highest in ____ and lowest in ____. a. Venous blood, inspired air b. Venous blood, alveoli c. Art

OLEGan [10]

Answer:

B) venous blood and aveolar

Explanation:

Partial pressure of carbon dioxide in the aveolar is the lowest, it is 40mmHg (millimetre mecury ) while the partial of carbon dioxide in venous blood is the highest at 45 to 50 mmHg (millimetre mecury)

4 0

3 years ago

If you needed copper, which mineral would you prefer to mine: chalcopyrite or bornite?

nekit [7.7K]

Answer:

Bornite

Explanation:

cause

7 0

3 years ago

Passive transport is the net movement of substances down a concentration gradient that requires metabolic energy. Active transpo

Dafna1 [17]

Answer:

The statement is false.

Explanation:

Passive transport moves molecules from one side of the membrane to the other with the energy of the chemical gradient (or concentration gradient). Otherwise, active transport uses the hydrolyzation of ATP to gain energy in order to move molecules across the membrane without taking into account the gradient.

4 0

3 years ago