3 years ago

What does ozone do to make life on earth possible?

1 answer:

6 0

Answer - Ozone layer helps keep the harmful ultra violet rays hitting and keeping the atmospheric pressure in.

Reasoning - Without the ozone layer the whole planet would have a loss of water and especially people burning very easily from the sun. <span />

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The activation energy for the reaction NO2 (g )+ CO (g) ⟶ NO (g) + CO2 (g) is Ea = 218 kJ/mol and the change in enthalpy for the

madreJ [45]

Answer:

$470\frac{KJ}{mol}$

Explanation:

The activation energy represents the energy barrier that reagents must pass to transform into products (or products to transform into reagents in a reverse reaction)

For any reaction, the change in enthalpy is related to the activation energy by the equation

$\Delta H =E_{a\ direct}-E_{a\ reverse}$

So, the activation energy for the reverse reaction is

$E_{a\ reverse}=E_{a\ direct}-\Delta H =218 \frac{KJ}{mol} - (-252)\frac{KJ}{mol}=470\frac{KJ}{mol}$

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3 years ago

How many 250 mg tablets of metronidazole are needed to make 150 ml of suspension containing 100 mg/ml?

Viktor [21]

The number 250 mg tablets of Metronidazole that are needed to make 150 ml of suspension containing 100 mg/ml

250mg= 150 ml

what about 100 ml = ? Mg

by cross multiplication

150 ml x 250 mg/100 ml = 60 Mg of 250 mg is needed

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3 years ago

vovikov84 [41]

The chemical reaction will be NaF

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3 years ago

Read 2 more answers

Please solve this problem

klemol [59]

Explanation:

ans b hcl and ccl4

both these compounds are formed by sharing of electrons......

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4 years ago

In the series of reactions that occur in photosynthesis, which forms when light strikes a molecule of chlorophyll?

True [87]

Answer:

NADPH

Explanation:

because it is in a dark stage

6 0

3 years ago