hey y'all i just want to know, do whales and dogs have a common ancestor?

Answers

Answer 1

yes

Explanation:

Which suggests that in an earlier time whales and dogs could have evolved from the same organism. the common ancestor in the 2 animals share notible traits. the pakicets was one of the whales ancestors and the grey wolf was the dogs ancestor.


Related Questions

Name three uses for mercury.

Answers

USES OF MERCURY

used in thermometer as it is liquid at room temperature.It is used in batteries , florescent lightit is also used in dental filling

Which statement describes how echolocation and ultrasound imaging are the same? They both use the absorption of sound waves. They both use the diffraction of sound waves. They both use the reflection of sound waves. They both use the transmission of sound waves.

Answers

Answer:

C.) They both use the reflection of sound waves.

Explanation:

Right on Edge

Answer:

C.) They both use the reflection of sound waves.

Explanation:

stay safe 2021

Extreme dryness is a characteristic of the____.

grasslands
desert
tropical rainforest

Answers

Answer:

desert

Explanation:

rainforest include a lot of rain, and grasslands have grass. grass includes water and sunlight. which leaves you to desert

Is Palladium an elementary substance or a compound?

Answers

Answer:

Elementary substance, since it is in the periodic table of elements.

Hope that helps!

-SCSB

Explanation:

What does the A Hof a reaction represent?
A. It represents the heat involved in a reaction.
B. It represents the thermal energy in a system.
C.
represents the randomness of the products.
D. It represents the usable energy in a reaction.
egation.

Answers

Answer:

it represents the heat involved in a reaction

Explanation:

just took the test

The delta H of a reaction represents the heat involved in a chemical change .

What is a chemical change?

Chemical changes are defined as changes which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical change.

There are several characteristics of chemical changes like change in color, change in state , change in odor and change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical changes:

1) inorganic changes

2)organic changes

3) biochemical changes

During chemical changes atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

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Which element is in group 15 period 6? Periodic table 

Answers

Answer:

Bismuth ( Bi )

Explanation:

HELP!!!!
please omg

Answers

Answer:

I believe it's A. to reduce air bubbles. Tbh, it's been a while

how much atomic mass does Osmium have

Answers

Answer:

190.23g

Explanation:

Osmium is element number 76 on the periodic table, with the atomic symbol "Os." The atomic mass of any element is listed underneath the atomic symbol. Osmium has an atomic mass of 190.23 grams.

Describe the motion of the water molecules as the vapor pressure increases?

Answers

Answer:  As for vapor pressure being higher at higher temperatures, when the temperature of a liquid is raised, the added energy in the liquid gives the molecules more energy and they have greater ability to escape the liquid phase and go into the gaseous phase.

Explanation:

The motion of the water molecules as the vapor pressure increases is:

The water molecules have greater energy

According to the movement of the water molecules in a pressurized environment where the vapor and the temperature are increased, there is an increased ability to change from liquid to gas.

As a result of this, the water molecules has greater energy as they are subjected to increased levels of temperature and vapor pressure which makes them have more energy and to be more unstable.

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Mg + Cu2+ —> Mg2+ + Cu

a) why is this a redox reaction?

b) identify the oxidizing agent. Give reason for your answer

answer any of them you want please

Answers

Explanation:

Since the oxidation state of Mg is changed to +2 from 0, it is oxidized. (as it is increased)

Similarly, oxidation state of Cu is changed to 0 from +2, it is reduced. (as it is decreased)

Since oxidation & reduction occur at the same time, it is redox reaction.

As Mg is being oxidized, other one must be the oxidizing agent.

Cu is the oxidizing agent

Mark brainly if answered correctly

Answers

ROW - ( 3 ) is correct

SYSTEM (A)

Respiratory system - here gaseous exchange takes place.

SYSTEM (B)

Digestive system - here nutrients from food is absorbed and assimilated .

SYSTEM (C)

Excretory system - removal of waste occurs

please help i genuinely don’t know what to do

Answers

Like, the first one is
Na ->1
O ->1
H-> 1
Total->3
And so on

What gases are exchanged during respiration?

Answers

Answer:

Explanation:

there should be more showing than telling

Answer:

oxygen and carbon dioxide.

Explanation:

WILL GIVE BRAINLIEST

Answers

Answer:

b

Explanation:

How to calculate the number of moles

Answers

Answer:

1. The formula for the number of moles formula is expressed as.

2. Given.

3. Number of moles formula is.

4. Number of moles = Mass of substance / Mass of one mole.

5. Number of moles = 95 / 86.94.

Can someone please help me with the right answer? I only have one more attempt :(

Answers

The decomposition of a solid to yield a gaseous product would involve an increase in entropy. So, the fourth answer choice would be correct.

Read the article and answer the 6 questions in it.

Answers

Answer:

Yea.....where is the article and the 6 questions?

Answer:

Answering

Explanation:

do u want us to tell u what we got?

When the equation
Na +
H2O → __H, +
NaOH
is correctly balanced using the smallest whole-number coefficients, what is the coefficient for H2O?

Answers

The coefficient is 2.
Full equation is
2Na + 2H2O = 2NaOH + H2

The balanced equation is 2Na + 2H[tex]_2[/tex]O [tex]\rightarrow[/tex] 2NaOH + H[tex]_2[/tex] and the coefficient of H[tex]_2[/tex]O is 2. Stoichiometry represents the number of coefficients.

What is balanced equation?

An equation for just a chemical reaction is said to be balanced if both the reactants as well as the products have the same number of atoms and total charge for each component of the reaction. In other words, each sides of both the reaction have an equal balance of mass and charge.

It is typical that balancing chemical formulas for both charge and mass in aqueous solutions. Equal numbers and types of atoms are produced on both aspects of the equation when balancing for mass. When the charge is balanced, there is no net charge on either side of the equation.

The balanced equation can be written as

2Na + 2H[tex]_2[/tex]O = 2NaOH + H[tex]_2[/tex]

The coefficient of H[tex]_2[/tex]O is 2.

Therefore, the balanced equation is 2Na + 2H[tex]_2[/tex]O [tex]\rightarrow[/tex] 2NaOH + H[tex]_2[/tex] and the coefficient of H[tex]_2[/tex]O is 2.

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what is the percent composition of potassium phosphate? show your work

Answers

Answer:

35.62%

Mass percent composition of K = 0.3562 x 100% Mass percent composition of K = 35.62%

Explanation:

How do trends in the periodic table help predict the properties of an element

Answers

as you move around there is a change in: electronegativies, ionisation energies, atomic radius etc. different amounts of these properties are going to effect how the element acts

Which equation is balanced?
A. H 2 + O 2 → H 2O
B. 2Na + Cl 2 → 2NaCl
C. KClO 3 → KCl 2 + 3O 2
D. CH 4 + 2O 2 → CO 2 + H 2 O

Answers

B. is the correct answer

Because in both sides (reactant and product) are:
Na= 2. Na=2
Cl=2 Cl=2

So this equation is balanced

what’s the process of natural selection

Answers

Answer:

Natural selection is the process through which populations of living organisms adapt and change. ... Through this process of natural selection, favorable traits are transmitted through generations. Natural selection can lead to speciation, where one species gives rise to a new and distinctly different species .

Explanation:

i just looked it up lol .

PLS HELP ME!!!!!!!!!!!!!! I DON'T HAVE A LOT OF TIME !!!!!!!!

Answers

Answer: Well i think i have saw this i wolud say B hope this helps

Explanation:

please help people! science science! thank you!

Answers

Answer:

A. Is your answer

All the other ones are not valid because they are lower to the ground and you wouldn't have enough MOMENTUM to put you up for the top of the star.

Hope this helps!

if life had existed during thie won the fossils probably would not have survived because

Answers

Answer:

because life would have use fossil for their benefits.

Oleic acid's melting point is 14°C and it's boiling point is 360°С. What phase is this substance
at room temperature 25°C?*

A. Solid
B. Liquid
C. Gas
D. Impossible to tell

Answers

The answer is C a gas

True or false: When adding acid to base the phenolphthalein indicator changes colour from colourless to pink at the end of the titration.

Answers

Answer: false

Explanation: I don’t know why but I just had this question and gussed false and I was right so false is therefore the right answer. Your welcome.

A student investigates the speed of a ball rolling down a ramp. The student records their data in the table below. Which of these best explains the student’s data?

A. The speed of the ball increases as the ball rolls down the ramp because the force acting on the ball is greater than the force of gravity.
B. The speed of the ball increases as the ball rolls down the ramp because the forces acting on the ball are unbalanced.
C. The speed of the ball decreases as the ball rolls down the ramp because the forces acting on the ball are balanced.
D. The speed of the ball decreases as the ball rolls down the ramp because of friction between the ball and the ramp.

Answers

Answer:

b

Explanationbecause i took the test and got a 100

the correct answer is b, the speed of the ball increases as the ball rolls down the ramp because the forces acting on the balls are balanced. hope this helps!! :)

How is a calorimeter used in this experiment different from the ones used to find the energy content of a snack

Answers

Answer:

Kindly check the explanation section.

Explanation:

PS: Note that enough information are not being provided and we do not know the experiment this question is all about. However, some information are provided below which is going to aid in solving when you get access to the main question.

The determination of the heat transferred from one substance to another is one of the important aspect in science. The method in which this heat is being measured is known as calorimetry and the instrument used in this technique is known as the calorimeter.

When the energy content of a snack is needed to be calculated, there is the need use a type of instrument known as bomb calorimeter.

Most of the calorimeters used by students are not so expensive like the used in the industries. Most of these calorimeters operates at a constant pressure while the Bomb Calorimeter operates at constant volume.

What is the pH of an aqueous solution that has an H+ ion concentration of 0.10 M?
14
10
6
1​

Answers

Answer:

1

Explanation:

pH = -log[H+] = -log(0.10) = log(1.0 x 10^-1) = 1

The pH scale determines how acidic or basic water is. The pH of an aqueous solution that has an H+ ion concentration of 0.10 M is 1. Therefore, option D is correct.

What is pH ?

The pH scale, which previously stood for "potential of hydrogen," is used to describe how acidic or basic an aqueous solution is. The pH values of acidic solutions are typically lower than those of basic or alkaline solutions.

The range is 0 to 14, with 7 representing neutrality. Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7. In reality, pH is a measurement of the proportion of free hydrogen and hydroxyl ions in water.

A solution's pH is a significant indicator of its chemical composition. The pH can affect how readily available nutrients are, how biological processes work, how bacteria behave, and how chemicals behave.

pH = -log [ H ⁺ ] = -log ( 0.10 )

= log ( 1.0 x 10⁻¹ )

= 1

Thus, The pH of an aqueous solution that has an H+ ion concentration of 0.10 M is 1. Therefore, option D is correct.

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