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Luba_88 [7]
3 years ago
12

To reflect about a problem means to ask yourself about any possible ‘what ifs.’ Please select the best answer from the choices p

rovided T F
Chemistry
2 answers:
alukav5142 [94]3 years ago
5 0

Answer:

true

Explanation:

youre putting thought into problems

Naily [24]3 years ago
4 0
The answer is true true true
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Distilled water is a completely neutral solution. What is its pH?
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The pH of distilled water is 7. This is the neutral pH, showing that the ratio of H+ ions and OH- ions is at equilibrium.
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Which of these is the lowest subgroup? kingdom, order, genus, or species.
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The correct answer is species

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Diatomic oxygen has a molar mass 16 times that of diatomic hydrogen. The root-mean-square speed vrms for diatomic oxygen at 50∘C
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Answer:(16)(2000)m/s=32000m/s

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4 years ago
A reaction between liquid reactants takes place at in a sealed, evacuated vessel with a measured volume of . Measurements show t
Semmy [17]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The pressure is  P  = 0.76 \ atm

Explanation:

From the question we are told that

   The mass of the carbon monoxide  is  m_c  =  17 \ g

   The temperature at which takes place  T  = 30 .0^oC =  30 + 273 =  303 K

   The volume of the sealed vessel  is  V  =  20 .0L

Generally the ideal gas law is mathematically represented as

        PV  =  nRT

Where R is the gas constant with value  R =  0.0821  \ L \ atm \ mol^{-1} K^{-1}

n is the number of moles of carbon monoxide  which is mathematically evaluated as

             n =  \frac{m_c}{M_c}

where M_c is the molar mass of carbon monoxide which is a constant with value

        M_c  =  28 \ g/mol

So     n  =  \frac{17}{28}

         n  =0.6071

Now Making P the subject we have

           P  =\frac{ 0.6071 * 0.0821 * 303}{20}

           P  = 0.76 \ atm

5 0
3 years ago
The chemical formula for emerald is Be3Al2(SiO3)6. An emerald can be described as
uysha [10]

Answer:

An emerald can be described as a pure substance because it is a compound. it's a pure substance because it is an element. It's an impure substance because it is chemically combined, an impure substance because it is a mixture.

Explanation:

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