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irina [24]
3 years ago
12

3

Chemistry
2 answers:
antiseptic1488 [7]3 years ago
6 0

Answer:

i beleive it is D. visible light

Explanation:

if im wrong sorry this subject isnt my forte

aleksklad [387]3 years ago
4 0

Answer:

human can see visible light

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A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile's engine cooling system. If a car's cooli
vladimir1956 [14]

Answer:

109.09°C

Explanation:

Given that:

the capacity of the cooling car system = 5.6 gal

volume of solute = volume of the water; since a 50/50 blend of engine coolant and water (by volume) is used.

∴ \frac{5.60}{2}gallons = 2.80 gallons

Afterwards, the mass of the solute and the mass of the water can be determined as shown below:

mass of solute = (M__1}) = Density*Volume

                          = 1.1g/mL *2.80*\frac{3785.41mL}{1gallon}

                         = 11659.06grams

On the other hand; the mass of water = (M__2})= Density*Volume

                         = 0.998g/mL *2.80*\frac{3785.41mL}{1gallon}

                        = 10577.95 grams

Molarity = \frac{massof solute*1000}{molarmassof solute*massofwater}

              =  \frac{11659.06*1000}{62.07*10577.95}

              = 17.757 m

              ≅ 17.76 m

∴  the boiling point of the solution is calculated using the  boiling‑point elevation constant for water and the Molarity.

\Delta T_{boiling} = k_{boiling}M

where,

k_{boiling} = 0.512 °C/m

\Delta T_{boiling} =  100°C + 17.56 × 0.512

              = 109.09 °C

6 0
4 years ago
Having the same number of valence electrons means having similar chemical properties.
Luba_88 [7]

Answer:

True

Explanation:

Because atoms with the same number of valence electrons react in similar ways with other elements.

6 0
3 years ago
Why are bacteria necessary for life on Earth to exist? Select three options.
gladu [14]

Answer:

Bacteria decompose rotting plant animal material.

Explanation:

Theres good bacteria, and theres bad bacteria. some helps, and some makes things worse. so really, in some sense all of the above.

Hope that helps.

4 0
3 years ago
Read 2 more answers
To separate hard candie and marbles what is the efficient method
irinina [24]
MAke two piles and spread them apart
3 0
4 years ago
Is there more or less air near sea level
vampirchik [111]

there is more air near sea level

7 0
3 years ago
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