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kipiarov [429]
2 years ago
15

A small, hard-shelled fossil that resembles a modern-day ocean organism was found

Chemistry
1 answer:
Paul [167]2 years ago
5 0

Answer:

The desert was one covered by ocean water.

Explanation:

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If you have a gold brick that is 2cm by 3cm by 4cm and has density of 19.3g/cm3, what is its mass?
natulia [17]
Volume = a x a x a  

V = 2 cm x 3 cm x 4 cm => 24 cm³

Density = 19.3 g/cm³

Mass = ?

Therefore:

m = D x V

m = 19.3 x 24

m = 463.2 g
4 0
3 years ago
Balance N2 + H2 —NH3 what type of reaction
AnnyKZ [126]
3! You have to ensure balance of all the different elements.
5 0
3 years ago
4. If you put 1 mL of coffee into 9 mL of water, how much was the coffee diluted?
garri49 [273]

1 in 10, or 1/10, or 0.1 dilution factor It may be wrong but this is what I have!

7 0
3 years ago
Read 2 more answers
Which element is reduced in the following reaction: 2Mg+O₂ → 2MgO if Mg goes from 0 to +2 and O goes from 0 to -2?
Lyrx [107]

Answer:

O.

Explanation:

  • The element which is oxidized is the element that losses electrons and its oxidation state be more positive.
  • The element which is reduced is the element that gain electrons and its oxidation state be more negative.

<em> O goes from 0 to -2, so, it is the element that is reduced.</em>

8 0
2 years ago
suppose a student poured equal volumes of water and naoh in two different flasks. he forgets to label his flasks and is confused
ArbitrLikvidat [17]

The one with higher temperature is the one with NaOH as heatis given off during the neutralization reaction that occurs.

<h3>What is volume?</h3>

Volume can be defined as the amount of space a substance or an objects occupies usually in a closed container.

Volume is measures in litres.

When water is added to dilute acid like HCl, they become more dilute.

When NaOH is added to HCl, a neutralization reaction occurs.

The student will determine the contents of the flasks by adding 10 ml of hcl to each flask. If the NaOH reacts with the Hcl, there will be an increase in temperature.

The increase in temperature is due to the heat of neutralization of the reaction between NaOH and HCl.

Learn more about volume at: brainly.com/question/1972490

#SPJ1

5 0
1 year ago
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