3 years ago

Which correctly describes the laws of conservation?

1 answer:

5 0

A is the answer

Venn diagrams are used for comparing and contrasting different topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show the characteristics apply to only that topic.

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4. A sign in a town gives the speed limit at 50.00 km/hr. What is this speed in cm/sec?

ivanzaharov [21]

sorry but if you are looking for an answer I don't know one. :(

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3 years ago

What is the atomic number for an element whose mass number is 78,

Ann [662]

Answer:

protons = atomic numbermass number = protons + neutronsatomic number = mass number - neutrons = 78-38 = 40

Explanation:

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2 years ago

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In principle, the equilibrium in the dehydration of an alcohol could be shifted to the right be removal of water. Why is this ta

Trava [24]

Answer:

See explanation

Explanation:

In this case, we have to remember that if we want to remove water from the reaction vessel we have to heat the vessel. So, we can convert the liquid water into gas water and we can remove it from the vessel. In this case, the products of dehydration for both molecules are (E)-4-methylpent-2-ene and cyclohexene with boiling points of 59.2 ºC and 89 ºC respectively. The boiling point of water is 100 ºC, therefore if we heat the vessel the products and water would leave the system, and the products would be lost.

See figure 1

I hope it helps!

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3 years ago

Which postmortem parameter is fixed by 8 hours?

zlopas [31]

The postmortem cooling or algor mortis gets fixed by 8- 10 hours after death. The temperature of the body after death can be used to determine the time since death.

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3 years ago

60.0 mL of 0.0100 M H3PO4 are required to neutralize 30.0 mL of a solution of KOH. What is the molarity of the potassium hydroxi

Vsevolod [243]

Answer:

h2o

Explanation:

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3 years ago