The study of fossil mammals is:
micropaleontology
invertebrate paleontology
vertebrate paleontology
paleobotany
these are the chocies

Percent yield of water : 70%

Reaction

2H₂ (g) + O₂ (g) → 2H₂O (g)

mol H₂(MW= 2 g/mol) :

[tex]\tt \dfrac{13.8~g}{2~g/mol}=6.9~mol[/tex]

mol H₂O = mol H₂ = 6.9

mass H₂O(theoretical) :

[tex]\tt 6.9\times 18~g/mol=124.2~g[/tex]

[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\\%yield=\dfrac{87}{124.2}\times 100\%=70\%[/tex]

Answer:

43.72

Explanation:

that is the answer hope u liked it and I did this already along time ago

The molarity of the solution will be "0.088 M".

Given values are:

Volume,

Molarity,

By using the Dilution principle, we get

→ [tex]M_2 = \frac{M_1 V_1}{V_2}[/tex]

By substituting the given values, we get

→       [tex]=\frac{1.005\times 43.72}{500}[/tex]

→       [tex]= \frac{ 43.9586}{500}[/tex]

→       [tex]= 0.088 \ M[/tex]

Learn more about molarity here:

https://brainly.com/question/19472942

Answer:

23.3 g/mol

Explanation:

The molar mass of 18.12 g of gas exerts a pressure of 3.05 atm on the walls of a 5.85 L container at 280 K is 23.3 g/mole.

Molar mass is the concentration of a substance that is present in a specific liquid. It is also called the concentration of a substance.

The molar mass can be calculated by the formula of an ideal gas:

PV = nRT

P is the pressure

V is the volume

n is the number of moles

R is the constant of gas.

T is the temperature.

The given amounts are the molar mass of 18.12 g.

The pressure is 3.05 atm.

The volume is  5.85 L

The temperature is 280 K

Putting the value in the equation

n = PV/RT = (3.05) (5.85) / (0.0821) (280) = 0.777 moles of gas

Molar mass = 18.12 g/0.777 moles = 23.3 g/mole

Thus, the Molar mass is 23.3 g/mole.

To learn more about molar mass, refer to the below link:

https://brainly.com/question/22997914

#SPJ5

Answer:

b

Explanation:

I did the test mark the brianlyes byyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

Answer:

Its the second one (B)

Explanation:

Marki the person that answerd first brainliest :)

Answer:

jh

Explanation:

Answer:

high less air cause there is no trees and lower is the same

Explanation:

We can verify the properties as follows;

1) Sour taste - Put some soda on your tongue

2) Corrode metals - Put a little soda on a clean metal surface

3) Effect on Litmus paper - Dip a blue litmus paper in soda

4) Electrolysis - Add two electrodes to soda and connect a battery.

Soda, specifically carbonated beverages like cola or soda pop, typically exhibits acidic properties. The acidity of soda is primarily due to the presence of carbonic acid (H₂CO₃), which forms when carbon dioxide gas (CO₂) dissolves in water.

When carbon dioxide is dissolved in water under high pressure, it forms carbonic acid through the following reaction:

CO₂ + H₂O ⇌ H₂CO₃

Learn more about Soda:https://brainly.com/question/31889777

#SPJ1

Answer:

electrons and protons

Explanation:

Answer:

Answer to A. helium, neon, argon, krypton, xenon, and radon, B. Elemental hydrogen (H, element 1), nitrogen (N, element 7), oxygen (O, element 8), fluorine (F, element 9), and chlorine (Cl, element 17) are all gases at room temperature, and are found as diatomic molecules (H2, N2, O2, F2, Cl2). C. Elements Compounds

Ar (argon) HBr (hydrogen bromide) C 3H 8 (propane)

Kr (krypton) HI (hydrogen iodide) C 4H 10 (butane)

Xe (xenon) HCN (hydrogen cyanide)* CO (carbon monoxide)

Rn (radon) H 2S (hydrogen sulfide) CO 2 (carbon dioxide)

Explanation:

Answer:

Sudden motions in Earths mantle causeing the crust to shift.

Explanation:

Answer:

hope the answer helps you

Explanation:

3 ethyl 2 hexene

plzz give me brainliest

By the IUPAC Naming Convention followed by every chemical standards, the structure from the question is named as 4,4-dimethyl heptane.

IUPAC Stands for International Union of Pure and Applied Chemistry.This organisation issued some standards for naming any chemical components that is followed world wide.

According to the IUPAC Standards:

First of all we have to identify the longest carbon chain which is an alkane group according to this question.As a result of 7 carbon linked with single bonds it will be named heptane.Now moving to the other parts:

[tex]-CH3[/tex] is termed as methyl

As the both the methyl group( [tex]-CH3[/tex]  ) is linked with the fourth carbon the numbering is 4 for methyl.So,the IUPAC name of this compound in the image is 4,4-dimethyl heptane.

To know more about IUPAC,

brainly.com/question/16631447

Answer:

the urinary system??

Explanation:

Explanation:

The fossils can be found on top of mount Everest due to regional uplift of the crust.

Mount Everest is located a along a convergent margin between two tectonic plate. Due to similarity in density between the two margins, when they collide, there is tectonic build up.

Sedimentary rock layers originally at sea levels are uplifted to those tower peaks as the plate continues to grind against each other.

Most sedimentary rocks contains fossils. As the grinding continues, the uplift and deformation continues.

Answer:

True

Explanation:

I just took that last year, and got a100%

True, Plants don't have brains, but they still adapt to their environments.

Adaptation is a process where they are changing their nature to suit the environment.

We have seen that plants do adaptation according to the environment, as in the summer season their leaves are hanging down but in the rainy season they show blossoms and green leaves. So, according to the environment for the survival and reproduction they adapt their body.

Hence, plants have no brains, but they still adapt.

To learn more about adaptation, visit the below link:

https://brainly.com/question/2396978

In an atom, the electron's spin around the center, also called the nucleus. The electrons like to be in separate shells/orbitals. Shell number one can only hold 2 electrons, shell two can hold 8, and for the first eighteen elements shell, three can hold a maximum of eight electrons. ( This is the answer to both questions!)

Answer:

It decreases

Explanation:

As you go down a group from top to bottom, the electronegativity decreases. Across a period, electronegativity increases from left to right.

Answer:

ether

Explanation:

i got it right on edg 2020 and they use ether in pokemon games to heal PP so that makes logical sense lol

The class of organic compounds that are used in anesthetics is:

A. Ether

It is a functional group consisting of C and O.

Anesthetics are an assorted gathering of medications with especially unique synthetic designs, going from basic inorganic atoms like nitrous oxide to additional perplexing natural specialists.

Organic compound is one that contains a bond with a carbon particle. In ethers, the practical gathering that is available is C=O. Ether, as a fluid, discharges fumes that are breathed in. Another very powerful fluid sedative is propofol, controlled intravenously.

Thus, correct option is A.

Find more information about Organic compound here:

brainly.com/question/704297

Answer: 6

Explanation:

Mark brainliest plzzz if correct

In C₃H₅( NO₃ )₃ there are total six number of oxygen atoms are present and three atoms of carbon, 5 atoms of hydrogen and 3 atoms of nitrogen present.

The chemical element with the atomic number 8 and symbol O is called oxygen. It belongs to the periodic table's chalcogen group, is a very reactive nonmetal, and an oxidizing agent that easily produces oxides with most elements as well as other compounds.

Dioxygen is the name given to the colorless, odorless, and tasteless gas that is oxygen at standard pressure and temperature.

Chemical elements are substances that only contain one kind of atom, such as oxygen. Since oxygen has an atomic number of 8 and the official chemical symbol O, an oxygen atom has eight protons in its nucleus. At room temperature, oxygen is a gas that has no flavor, color, or odor.

Thus, In C₃H₅( NO₃ )₃ there are total six number of oxygen atoms are present.

To learn more about oxygen, follow the link;

https://brainly.com/question/1506082

#SPJ2

Answer:

1. 3.7 * 10^-4 mol Pd

2. 146.8 mol Fe (or 150 mol Fe if sig fig are required)

3. 52.10 g Cr

4. 14839 g Al (or 15000 g Al if sig fig are required)

5. 1.02  * 10^25 atoms Ge

Explanation:

Answer:

because they are fueled by evaporation from warm ocean water, which dry land surfaces do not provide.

Explanation:

Answer: Other person was wrong correct answer is Land filters the water forced up from the sea by the wind :)

Explanation:

Answer:

The answer is c

Explanation:c

Answer:

Valence Electrons

Explanation:

Answer:

Valence

Explanation:

The outermost shell are the valence electrons

youngest

hope this helps anyone<3

Answer:

The answer is youngest.

Explanation:

Answer:

The sequence of individual steps, or elementary reactions, by which reactants are converted into products during the course of a reaction is called the reaction mechanism. The overall rate of a reaction is determined by the rate of the slowest step, called the rate-determining step.

Explanation:

Answer: Comparing rock layers in distant places can be a challenge for geologists since these layers may have different environmental factors that caused different transformations in them.

Therefore, when it is necessary to establish a comparison between layers of rocks in different ligands, geologists must establish steps to make an efficient comparison and have results consistent with reality. To do this, they must first compare a layer in one location with layers in other locations, assign relative age to a layer in one location, and identify index fossils in one or more layers in one location.

Answer:

C

Explanation:

Answer:

B

Explanation:

Answer:

B. ATOMS OF THE SAME ELEMENT THAT HAVE A DIFFERENT NUMBER OF NUETRONS

Explanation:

Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.

Option D is the correct alternative.

We have a chemically unreactive element.

We have to determine which term best describes this atom.

Reactivity in chemistry is the impulse for which a chemical substance undergoes a chemical reaction, either by itself or with other materials.

According to the question -

An atom that that does not react with the other atoms belongs to those elements which are chemically unreactive or inert elements. The reason behind their inertness is their completely filled outermost shell which can accommodate a maximum of 8 electrons which is as shown by their electronic configuration -  1s²2s²2p⁶. Hence, they are highly stable and don't react with other elements. Ex - Helium, Argon, Neon etc.

Hence, Option D is the correct alternative.

To solve more questions on inert elements, visit the link below-

https://brainly.com/question/24298610

#SPJ2