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3 years ago

What is the value of x in the measure of the angle?

Chemistry

2 answers:

Vlad1618 [11]3 years ago

8 0

It is 14, use inverse operations. 41 = 2x+13

Andrew [12]3 years ago

4 0

The two angles would be both 41 degrees.
$(2x + 13) = 41 \\ 2x = 41 - 13 \\ 2x = 28 \\ x = \frac{28}{2} \\ x = 14$
x in this case would be 14 degrees.

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How many molecules are in 50 grams of water?

blondinia [14]

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2 years ago

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Calculate the volume of 1M NaOH required to neutralize 200 cc of 2M HCI. What mass of sodium

Nezavi [6.7K]

NaOH+HCl-> NaCl+H2O

1 mole of NaOH

1 mole of HCl.

To calculate volume of NaOH

CaVa/CbVb= Na/Nb

Where Ca=2M

Cb=1M

Va=200cm³

Vb=xcm³

Substitute into the equation.

2×200/1×Vb=1/1

400/Vb=1/1

Cross multiply

Vb×1=400×1

Vb=400cm³

To calculate the mass of sodium chloride, NaCl from the neutralization rxn.

Mole of NaCl=1

Molar mass of NaCl= 23+35.5=58.5

Mass=xgrammes.

Mass of NaCl=Number of moles × Molar mass.

Substitute

Mass of NaCl= 1×58.5

=58.5g

This is what I could come up with.

5 0

3 years ago

Consider the following equilibrium: CO2(g) + C(graphite) 2CO(g); ΔH = 172.5 kJ The equilibrium constant for this reaction will

bezimeni [28]

Answer: Option (B) is the correct answer.

Explanation:

As the given reaction is as follows.

$CO_{2}(g) + C(graphite) \rightarrow 2CO(g)$

Equilibrium constant for this reaction will be as follows.

$K_{c} = \frac{[CO_{2}]}{[CO]^{2}}$

According to Le Chatelier's principle, when we increase the temperature then the equilibrium will shift towards the right hand side.

As a result, concentration of carbon dioxide will decrease whereas concentration of carbon monoxide will increase.

Thus, we can conclude that in the given reaction equilibrium constant for this reaction will decrease with increasing temperature.

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3 years ago

Cevabı atar mısınız lütfen

yawa3891 [41]

I’m sorry I don’t understand if you can may you say it in English?

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2 years ago

What is the force exerted if a 52kg student accelerates into their desk at 5/ms2

murzikaleks [220]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{260 \: newton}}}}}$

Explanation:

Mass ( m ) = 52 kg

Acceleration ( a ) = 5 m / s²

Force ( F ) = ?

According to Newton's second law of motion ,

$\boxed{ \sf{force = mass \times acceleration}}$

$\longrightarrow{ \sf{force = 52 \times 5}}$

$\longrightarrow{ \sf{force = 260 \: newton}}$

Hope I helped!

Best regards! :D

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2 years ago

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