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3 years ago

What advances in science have been made as a result of radiometric dating?

Chemistry

1 answer:

Free_Kalibri [48]3 years ago

8 0

A more accurate geological timescale?
More accurate phylogenetic trees?

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Practice Explaining Heat Flow

zloy xaker [14]

Answer:

The right choice is "burning gas → pan → water → eggs"

Explanation:

Heat will flow from the body of higher temperature to the cooler body.

So, heat will firstly flow from burning gas to pan by conduction then to the water in contact with pan then to the egg present inside the water.

<u>So, the right choice is :</u>

"burning gas → pan → water → eggs"

6 0

3 years ago

Read 2 more answers

TRUE or FALSE. adding a solute like sodium chloride to water will always increase the freezing point

Afina-wow [57]

I think that is false but don't quote me

8 0

3 years ago

Read 2 more answers

How can you determine the products of a single or double displacement reaction?

Pavlova-9 [17]

Explanation:

A single-replcaement reaction is a chemical reaction in which one element replaces another in a compound.

A double replacement reaction is a reaction in which the metals in two ionic compounds exchange partners.

8 0

3 years ago

Smallest to largest: biome,population,organism,ecosystem,community

Ivahew [28]

Organism, population, community, ecosystem, and biome

7 0

3 years ago

If 45.0 mL of ethanol (density =0.789g/mol) initially at 6.0°C mix with 45.0 mL of water (density =1.0 g/mol) initially at 28.0°

Likurg_2 [28]

The final temperature of the mixture : 21.1° C

<h3>Further explanation </h3>

The law of conservation of energy can be applied to heat changes, i.e. the heat received / absorbed is the same as the heat released

Q in(gained) = Q out(lost)

Heat can be calculated using the formula:

Q = mc∆T

Q = heat, J

m = mass, g

c = specific heat, joules / g ° C

∆T = temperature difference, ° C / K

Q ethanol=Q water

mass ethanol=

$\tt mass=\rho\times V\\\\mass=0.789\times 45=35.505~g$

mass water =

$\tt mass=1~g/ml\times 45~ml=45~g$

then the heat transfer :

$\tt 35.505\times 2.42~J/g^oC\times (t-6)=45\times 4.18~J/g^oC\times (28-t)\\\\85.922t-515.533=5266.8-188.1t\\\\274.022t=5782.33\rightarrow t=21.1^oC$

5 0

3 years ago