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damaskus [11]
2 years ago
8

What is an Organelle in biology? 20 pts

Biology
2 answers:
In-s [12.5K]2 years ago
8 0
<span>mitochondria ribosomes endoplasmic reticulum</span>
katrin2010 [14]2 years ago
7 0
There are 3 mitochondria, ribosom, endoplasmic reticulum
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How is enthalpy used to predict whether a reaction is endothermic or exothermic?
Radda [10]

<u>Answer:</u>

<em>329.48 KJ/mol heat is released by the combustion of 2 molof methane</em>

<u>Explanation:</u>

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

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

3 0
3 years ago
Si al pesar una tierra en un envase obtenemos un peso de 6.6 gramos. Si el envase vacío pesa 3
maksim [4K]

Answer:

3.6 gramos

Explanation:

a 6.6 le restamos 3 que es el peso del envase para poder solo calcular el de la tierra.

6.6-3=3.6

Espero estar bien y que te haya servido en algo.

7 0
3 years ago
genetic engineering might allow parent to 'design' their children before birth are you in favor of this? why or why not?​
ludmilkaskok [199]

Answer:

I think it is quite an interesting idea to allow parents to 'design' their children before birth. Because some people have preferences and those preferences are taken very seriously. I wouldn't want to have a baby boy, I would want a baby girl. Although, this could be a waste of money and time because this might be one of the things that are better not to be fixed even if it isn't broken. But, this can also be good, if you desperately need a child with specific features, this can help. Even if I can't seem to find a reason where a child is supposed to have specific features.

Explanation:

4 0
2 years ago
I need help please !!!!!!
Karolina [17]

Answer:

5-10 days to get to the waking faze

5 0
3 years ago
Why is it imprtant for the ova and sperm cell to each contain a haploid number of chromosomes?
Katyanochek1 [597]

Meiosis makes sperm and eggs. ... The result is 4 haploid daughter cells known as gametes or egg and sperm cells (each with 23 chromosomes – 1 from each pair in the diploid cell). At conception, an egg cell and a sperm cell combine to form a zygote (46 chromosomes or 23 pairs).

HOPE THIS HELPS AND GOOD LUCK


MARK BRAINLIEST PLZ!!!!!!!!!!!!!!!

4 0
2 years ago
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