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2 years ago

Which of the following activities are performed by computer programmers? Choose all that apply.

Biology

1 answer:

igor_vitrenko [27]2 years ago

6 0

Answer:

Four Activities in a Computer -

· Input: Capturing and gathering data.

· Processing: Converting or changing the data into useful

outputs.

· Storage: Maintaining data within the system on a

temporary or permanent basis.

Output: Produces the results of the process in a matter

that is perceptible to human senses or used as input for another system.

Explanation:

where are the choices

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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.

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2 years ago

Why is it important for a plant to be able to both stimulate and inhibit growth?

Yakvenalex [24]

Answer:

so that it can get the proper nutrients it needs.

Explanation:

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All of the following are examples of physical properties except

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B. Forming new compounds

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The scientific study of heredity

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Which kinds of cells are always single-celled? a). eukaryotes b).prokaryotes

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Answer:

Explanation:

prokaryotes

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