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9966 [12]
3 years ago
5

Evidence in the fossil record points to

Chemistry
2 answers:
pishuonlain [190]3 years ago
6 0
The Permian-Triassic extinction event<span> about 250 million years ago was the deadliest: More than 90 percent of all species perished. Many scientists believe an asteroid or comet triggered the massive die-off, but, again, no crater has been found. Another strong contender is flood volcanism from the Siberian Traps, a large igneous province in Russia. Impact-triggered volcanism is yet another possibility.</span>
Nat2105 [25]3 years ago
4 0

Evidence in the fossil record points to  (________)major asteroid impacts that have caused mass extinctions in which 50%–96% of life on Earth died out


It is 5.

Points to __5___ major asteroid impacts

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A balloon filled with 6.0 MLS of air at a pressure of 15 PSI. when placed into a bell jar, the pressure decreased to 2.4 PSI. wh
lyudmila [28]

Answer:

2.6

Explanation:

2.6

5 0
3 years ago
Look at the following balanced equation. How many atoms of oxygen (O) are present on the reactant side of the equation?
balu736 [363]

There are 6 atoms of oxygen on the reactant side of the following equation: 2Fe2O3 + 3C → 4Fe + 3CO2. Details about atoms can be found below.

<h3>How to find number of atoms?</h3>

The number of atoms of an element in a balanced equation is the amount of that element involved in the reaction.

According to this question, Iron oxide reacts with carbon to produce iron and carbon dioxide as follows:

2Fe2O3 + 3C → 4Fe + 3CO2

In this reaction, 2 × 3 atoms = 6 atoms of oxygen are present on the reactant side of the equation.

Learn more about number of atoms at: brainly.com/question/8834373

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4 0
2 years ago
What is generally the best approach when liquid from a large reagent bottle is needed in an experiment
Paul [167]

Answer:

See the answer below

Explanation:

The best approach would be to <u>pour the liquid from the large reagent bottle into a small-size beaker or reagent bottle first</u>, before measuring the required quantity out into the reaction vessel. This is necessary in order to maintain safety in the laboratory.

Pouring the liquid directly from the large reagent bottle into the measuring cylinder or directly into the reaction bottle can compromise safety in the laboratory. The liquid might splash out and cause harm to the handler or create other harmful circumstances in the laboratory.

6 0
4 years ago
Choose you as a Trusted Helper​
snow_lady [41]

Answer:

yes.

Explanation:

3 0
3 years ago
How does nectar provide energy for a humming bird
Greeley [361]

Nectar contains a high concentration of sucrose (sugar).

When hummingbirds ingest the nectar, their cells use oxygen to convert it into carbon dioxide and water.

The oxidation of sucrose releases a large amount of energy, which the birds can use for flapping their wings, etc.

6 0
3 years ago
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