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3 years ago

Luminol is a chemical used to indicate that a red liquid is blank

1 answer:

4 0

<span>Blood. Luminol is a chemical that comes in a spray. When it is mixed with another chemical called an oxidizing agent it produces a compound that gives off a blue glow temporarily. Blood contains an oxidizing agent, so if luminol is sprayed on blood it glows blue for about 30 seconds.</span>

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In an experiment Teresa's measures 15.5 mL of water she must have used a

kotykmax [81]

Answer:

transfer pipet that had markings every 0.1 mL.

Explanation:

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4 years ago

2 The substance has a mass of 0.50 kg.

katen-ka-za [31]

Answer:

68000J/kg

Explanation:

Given parameters:

Mass of the substance = 0.5kg

Quantity of heat transferred to the body = 34000J

Unknown:

Specific latent heat of fusion = ?

Solution:

The specific latent heat is usually involve in phase changes;

H = mL

H is the quantity of heat supplied

m is the mass

L is the specific latent heat

Insert the parameters and solve;

34000 = 0.5 x L

L = $\frac{34000}{0.5}$ = 68000J/kg

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Vilka [71]

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4 years ago

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vladimir1956 [14]

Answer:

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3 years ago

Use the periodic table to identify the number of valence electrons available for bonding for each of the following elements.

julia-pushkina [17]

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Explanation: <3

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