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GuDViN [60]
3 years ago
8

Inbox

Chemistry
1 answer:
jeka57 [31]3 years ago
3 0

Answer:

8 oxygen. 9 flourine. 10. Neon. 5 Boron

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HELPPP!! Which describes one feature of the image formed by a convex mirror?
notka56 [123]

Answer:

The correct answer is - right-side up.

Explanation:

A diverging mirror is a curved mirror that can be bulge outside towards the source of light called a convex mirror or inward away from the source of light called a concave mirror.

A convex mirror is a mirror that forms an image bigger and but right side up or exact as the object direction also called a virtual image. It appears to be bigger than the real object and not upside down as concave mirrors.

8 0
3 years ago
Read 2 more answers
Students are conducting an experiment to determine if sugars are present in foods. They heat a test tube containing a sugar solu
satela [25.4K]

Answer:

A

Explanation:

Benedict's test is the ideal standard test to distinguished between reducing(glucose) and Non reducing(diasaccharides,sucrose).

Benedict's tests gives a positive test for the presence of reducing sugar,with the initial mixture of the sugar solution changing from  the initials green and orange  color   and brick red precipate of copper (ii) ,which would not dissolve in solution.

However, with non reducing the Benedict's gives a negative test.Because no color change occurs.

In either case,the chemical reaction that occurs as the solution gained heat  is exothermic and this may lead to boiling of the solution and spilling onto the burner,which may lead to explosion.

5 0
3 years ago
2. Circle all of the following that change with the temperature of a reaction.
OverLord2011 [107]

Based on the effect of temperature on a reaction, a change in temperature affects the rate constant K.

Based on the Arrhenius equation, the y-intercept gives the value of ln A.

From the value of the slope, the value of Ea is 42.1 J/mol.

<h3>What is the effect of temperature on a reaction?</h3>

A change in the temperature of a reaction acts to increase the rate of reaction.

  • Change in temperature has no effect on the ideal gas constant.
  • Change in temperature has no effect on the activation energy.
  • Change in temperature has no effect on the concentration of reactants.
  • Change is temperature can either lower or increase the rate constant of a reaction.
  • Change in temperature has no effect on the order of reaction.

According to the Arrhenius equation, the y-intercept gives the value of ln A.

From the graph; slope = -Ea/R

Ea = -slope/R

Where;

  • Ea is activation energy
  • R is molar gas constant = 8.314 J/K.mol
  • Slope = -350 K

Ea = -(-350)/8.314

Ea = 42.1 J/mol

Learn more about Arrhenius equation at: brainly.com/question/17205915

5 0
2 years ago
Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy of the following chemical rea
Mars2501 [29]

Answer:

\Delta _rS\°=-2965.27J/K

Explanation:

Hello,

In this case, for the considered reaction, the standard reaction entropy is computed considering the standard entropy of each product and reactant and their stoichiometric coefficients as shown below:

\Delta _rS\°=8*S\°_{SF_6}-S\°_{S_8}-24*S\°_{F_2}

Thus, considering the ALEKS Data tab, we obtain:

\Delta _rS\°=8*(291.52J/K)-(430.23J/K)-24*(202.8J/K)\\\\\Delta _rS\°=-2965.27J/K

Regards.

5 0
3 years ago
3. A rocket sled accelerates from 10 m/sec to 50 m/sec in 2 seconds. What O points
FrozenT [24]

Answer:

b

Explanation:

by using formula

a=(v-u)/t

where a= acceleration

v = initial velocity = 10 m/s

u= final velocity =50 m/s

t = time taken = 2s

6 0
3 years ago
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