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4 years ago

Two characteristics used to classify igneous rocks are texture and

Chemistry

2 answers:

kykrilka [37]4 years ago

8 0

<span>Two characteristics used to classify igneous rocks are texture and </span>Mineral Grains

igomit [66]4 years ago

7 0

Texture and minimal grains is the answer to this question

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A. Is lithium (Li) more or less reactive than beryllium (Be)?

damaskus [11]

Answer:

Li is more reactive then Be.

Explanation:

As you go to the farther left and down on the periodic table, the higher that element reactivity is.

5 0

3 years ago

The balanced combustion reaction for C6H6 is 2C6H6(l)+15O2(g)⟶12CO2(g)+6H2O(l)+6542 kJ If 8.600 g C6H6 is burned and the heat pr

jenyasd209 [6]

Answer : The final temperature of the water is, $22.5166^oC$

Explanation : Given,

Mass of benzene = 8.600 g

Molar mass of benzene = 78 g/mole

First we have to calculate the moles of benzene.

$\text{Moles of benzene}=\frac{\text{Mass of benzene}}{\text{Molar mass of benzene}}=\frac{8.600g}{78g/mol}=0.1103mole$

Now we have to calculate the energy of combustion.

The given balanced chemical reaction is:

$2C_6H_6(l)+15O_2(g)\rightarrow 12CO_2(g)+6H_2O(l)+6542 kJ$

According to reaction,

As, 2 moles of benzene gives 6542 kJ of energy on combustion.

So, 0.1103 mole of benzene gives $\frac{6542 kJ}{2}\times 0.1103=360.7913kJ$ of energy on combustion.

Now we have to calculate the final temperature of the water.

Formula used : $q_w=m_w\times c_w\times \Delta T=m_w\times c_w\times (T_{final}-T_{initial})$

where,

$q_w$ = heat released = 360.7913 kJ = 36079.13 J

$m_w$ = mass of water = 5691 g

$c_w$ = specific heat of water= $4.18J/g^oC$

$T_{final}$ = final temperature = ?

$T_{initial}$ = initial temperature = $21^oC$

Now put all the given values in the above formula, we get:

$36079.13J=5691g\times 4.18J/g^oC\times (T_{final}-21^oC)$

$T_{final}=22.5166^oC$

Therefore, the final temperature of the water is, $22.5166^oC$

8 0

4 years ago

Which has the strongest intermolecular bonds? liquid gas solid water

Delicious77 [7]

It would be solid
hope this helps

3 0

4 years ago

What is the hardest subject u ever taking, mine is chemistry

artcher [175]

Answer:

Mine is language arts brainliest?

Explanation:

7 0

3 years ago

Based on the table, which atom has a charge of –1?<br> 1<br> 2<br> 3<br> 4

Shkiper50 [21]

An electron

there is no table but an electron has a charge of -1

<h2>Hope this helps ;D</h2><h2></h2><h2>Kenny </h2>

6 0

3 years ago