1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Viefleur [7K]
3 years ago
6

How many millions of years ago did the earliest marine reptiles evolve from land reptiles?

Chemistry
2 answers:
Nezavi [6.7K]3 years ago
6 0
Roughly 240 million years ago
nydimaria [60]3 years ago
3 0
About 240 million years ago
You might be interested in
For the reaction between solid tetraphosphorus trisulfide and oxygen gas to form solid tetraphosphorus decoxide and sulfur dioxi
Rainbow [258]

1 mole of  reacts with 8 moles of  to form 1 mole of  and 3 moles of

<h3>What is a tetraphosphorus decoxide?</h3>

Tetraphosphorus decoxide, () is a non-metal oxide that gives acidic property when dissolved in water.

The name phosphorus decoxide can be interpreted as 4 phosphorus (P) atoms (‘Tetra’), bonds with 10 oxygen (O) atoms (‘Dec’) in a molecule. besides that, it is also known as phosphorus pentoxide.

It can be prepared by heating pure phosphorus with oxygen in blast furnace.

+  →

It is used as a dehydrating agent due to its week van der Waals dispersion forces. Thus, owing to give exothermic reaction when dissolved in watermore precisely, it is a white crystalline anhydrous (without water molecule) solid.

In granular form it can be also used as desiccant as well.

Learn more about phosphorus from the given link:

brainly.com/question/25352398

#SPJ4

3 0
2 years ago
Acetone has a density of 0.7857 g/cm^3. What is the volume in milliliters of 7.70g of acetone
Brums [2.3K]
Pretty sure this is it

8 0
3 years ago
Read 2 more answers
What is the proper way of collection, preservation and transition of hair?​
Murrr4er [49]
An investigator can collect hairs they observe visually (with tweezers or by hand), and they can also use clear tape to lift non-visible hair from a variety of surfaces, such as clothing. Other methods of hair sample collection include combing and clipping methods.
7 0
3 years ago
6. Which example has BOTH ionic and covalent bonds? *
Fed [463]

Answer:

It’s either A or D  buttttt probably d

Explanation:

7 0
3 years ago
It the mass of a material is 46 grams and the volume of the material is 8 cm ^3 What would the density of the material to be
Nat2105 [25]
5.75 Grams per cm^3

You do mass divided by volume
3 0
3 years ago
Other questions:
  • A balanced equation tells you the mole ratio of all reactants and products. Using the chemical reaction below how many moles of
    11·2 answers
  • Which of the following is a true statement about science?
    13·2 answers
  • What forensic technique is seen as reliable? Why is this? what makes this technique more reliable and accurate than other techni
    10·1 answer
  • The mass number of Fez is 56. How many neutrons are there in a single Fez atom?
    6·1 answer
  • Consider the diagram of the Earth, Sun, and Moon system. Which phenomenon is MOST DIRECTLY caused by the revolution of the Earth
    6·1 answer
  • What are the amplitude's for both waves A and B?
    13·1 answer
  • In a physical change, the _____ does not change.
    11·1 answer
  • Which refers to the force that one massive object exerts to attract another object?
    15·2 answers
  • An atom of element Be has four protons, four electrons, and five neutrons. Which element below could be an isotope of this atom?
    13·2 answers
  • What are adipoyl chloride used for or uses?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!