Answer:It is C i got it correct
Explanation:
Answer:
C. giving the country a larger role in protecting other countries in the
Americas.
Explanation:
Calculate how much Carbon Dioxide IN GRAMS needs to be absorbed to
release 500g of oxygen during photosynthesis.
Answer:
687.5 g of CO2
Explanation:
We'll begin by writing the balanced equation for photosynthesis. This is illustrated below:
6CO2 + 6H2O —> C6H12O6 + 6O2
Next, we shall determine the mass of CO2 absorbed and the mass of O2 released from the balanced equation. This is illustrated below:
Mass of CO2 = 12 + (2 × 16) = 12 + 32
= 44 g/mol
Mass of CO2 from the balanced equation = 6 × 44 = 264 g
Molar mass of O2 = 2 × 16 = 32 g/mol
Mass of O2 from the balanced equation = 6 × 32 = 192 g
Summary:
From the balanced equation above,
264 g of CO2 were absorbed to release 192 g of O2.
Finally, we shall determine the mass of CO2 absorbed to release 500 g of O2. This can be obtained as follow:
From the balanced equation above,
264 g of CO2 were absorbed to release 192 g of O2.
Therefore, Xg of CO2 will be absorbed to release 500 g of O2 i.e
Xg of CO2 = (264 × 500)/192
Xg of CO2 = 687.5 g
Thus, 687.5 g of CO2 will be absorbed to release 500 g of O2.
Why should a hypothesis be testable?
A. It must be testable in order to be found true or false.
B. It must be testable for the outcome to be predictable.
C. It must be testable for other scientists to consider it reliable.
D. It must be testable if it is to become a scientific theory.
Write the electron configuration for the electrons identified by the following quantum numbers:
a) 2, 1, 0, -½
b) 4, 2, 0, -½
c) 5, 3, 2, -½
Thanks!
Answer:
see the answer at the pic
The electron configuration for the electrons as listed are:
a) 1s² 2s² 2p⁵ = 9X
b) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d⁸ = 46 X
c) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴
Using the quantum numbers of the identified electrons to derive the electron configuration ( the representation of the distribution of electrons in the orbit of an atom ) electron configuration of electrons can be calculated using the formula :2n².
where n = orbit number and the various energy levels are represented as 1,2,3,4... while shells of the an atom is written as K,L,M,N
hence the electron configuration of the electrons identified by the quantum numbers are as written above.
Learn more : https://brainly.com/question/20974986
Calculate the percent composition of C6H12O6
Answer:
Did you just let your cat walk on your keyboard? XD
Could you explain this a bit better please?
I'll answer the question in the replies of this comment if you can give me a bit more information.
Explanation:
May I have brainliest please? :)
Please help i will give brainliest
please help
How are weather satellites and weather stations similar?
A They both capture images of clouds, storms, and snow.
B They both collect weather data from various locations.
C They both observe weather conditions from the atmosphere.
D They both require a human to be present for data collection.
Answer:
A is the answer.
Explanation:
Answer: the answer is B hope it hepls
Explanation:
Below is a phase diagram for Carbon Dioxide. Use this diagram to answer the following question.
In this example we will start the Carbon Dioxide out at a temperature of -20oC and 1 atm of pressure. If the pressure was raised to 100 atm of pressure while still staying at -20oC, what phases would the Carbon Dioxide change between?
Metals react by losing valence electrons. Which of the alkali metals loses its valence electrons most easily? Explain.
Answer:
lol you have an aot profile pic
What is necessary to produce visible light from chemical compounds?
Answer:
the molecule must contain either pi bonds or atoms with non-bonding orbitals.
Explanation:
A non-bonding orbital is a lone pair on, say, oxygen, nitrogen or a halogen.
What happens when molecules diffuse across the cell membrane?
Answer:
The correct answer is from areas of high concentration to low concentration.
Explanation:
A concentration gradient exists for these molecules, so they have the potential to diffuse into (or out of) the cell by moving down it.
Hope this Helps!
Which models of the atom does the experimental evidence from Bohr's hydrogen experiment support? Explain why these models are compatible with the experimental results.
The models are Daltons, Thompsons, and Rutherfords
Answer:
Rutherfords
Explanation:
The model of the atom supported by Bohr's hydrogen experiment is the Rutherford's model of the atom.
Rutherford through his experiment on gold foil suggested the atomic model of the atom. The model posits that an atom has a small positively charged center(nucleus) where nearly all the mass is concentrated.
Surrounding the nucleus is the large space containing electrons. In the Bohr's model of the atom, he suggested that the extranuclear space of the atom is made up of electrons in specific spherical orbits around the nucleus.What are the following is example of physical property
Answer:
ig b
Explanation:
u didnt show a picture of it so I cant help
CH4+O2--->CO2+2H2O2
Write a few paragraphs predicting the products of the chemical reaction and explaining why you made this prediction. Your document should:
i. identify the products of the chemical reaction.
ii. explain why these are the products based on trends in the periodic table (the number of valence electrons, electronegativity, etc.).
iii. identify the types of bonds in the reactants and products.
iv. identify the number of each type of bond in the reactants and products.
v. identify the type of reaction.
Riley Greene
Initial prediction : CH_4+O_2 transfers to CO_2+H_2O
Initial Explanation :
The products of this reaction are CO_2 and H_2O. These elements are Carbon Dioxide and Water. Atom's chemical properties are determined by the number of electrons in its outermost shells. Based on the number of electrons in the shells, it decides the reactivity of atoms. Atoms with the same number of electrons in the outer shells have similar chemical properties. If atoms have 1,2 or 3 valence electrons they react by giving out those electrons to become stable. If atoms have 6 or 7 electrons in the outer shell they react by taking in electrons to complete its outer shell.
So Methane has 8 valence electrons while Oxygen has 6. One molecule of methane combined with two oxygen molecules, react to form a carbon dioxide molecule, and two water molecules usually given off as steam or water vapor during the reaction and energy.
In the reaction, the bonds in the methane and oxygen come apart, the atoms rearrange and then re-bond to form water and carbon dioxide.The reactants are on the left side of the equation and the products are on the right. In the reaction, the bonds in the methane and oxygen come apart, the atoms rearrange and then re-bond to form water and carbon dioxide. No new atoms are created and no atoms are destroyed. This reaction is a combustion reaction.
Dot diagram Attached....
Revised prediction : CH_4+O_2 transfers to CO_2+H_2O
Revised Explanation : I was correct initially so I put the same explanation.
The products of this reaction are CO_2 and H_2O. These elements are Carbon Dioxide and Water. Atom's chemical properties are determined by the number of electrons in its outermost shells. Based on the number of electrons in the shells, it decides the reactivity of atoms. Atoms with the same number of electrons in the outer shells have similar chemical properties. If atoms have 1,2 or 3 valence electrons they react by giving out those electrons to become stable. If atoms have 6 or 7 electrons in the outer shell they react by taking in electrons to complete its outer shell.
So Methane has 8 valence electrons while Oxygen has 6. One molecule of methane combined with two oxygen molecules, react to form a carbon dioxide molecule, and two water molecules usually given off as steam or water vapor during the reaction and energy.
In the reaction, the bonds in the methane and oxygen come apart, the atoms rearrange and then re-bond to form water and carbon dioxide.The reactants are on the left side of the equation and the products are on the right. In the reaction, the bonds in the methane and oxygen come apart, the atoms rearrange and then re-bond to form water and carbon dioxide. No new atoms are created and no atoms are destroyed. This reaction is a combustion reaction.
The reaction as shown is a combustion reaction.
The reaction; CH4 + O2 ---> CO2 + 2H2O2 is a combustion reaction because methane reacts with oxygen to yield carbon dioxide and water. Carbon is always tetravalent in its compounds hence there are four carbon oxygen bonds in the product. Lets recall that the bonds in CH4 re nonpolar because of the minimal electronegativity difference between carbon and hydrogen. Even though the bond in CO2 is polar but the eneitire molecule is nonpolar because the dipoles cancel out. Water is a polar molecule.
Hydrogen forms only one bond hence in water molecule, each hydrogen atom is bonded to a central oxygen atom. All the bonds in water and carbon dioxide as well as in methane and oxygen are covalent.
Learn more: https://brainly.com/question/14283892
One isotope of oxygen differs from another isotope of oxygen in *
Each isotope of Oxygen has a different number of neutrons
Further explanationThe elements in nature have several types of isotopes
Atomic mass is the average atomic mass of all its isotopes
Isotopes are atoms has the same number of protons but has a different number of neutrons.
So Isotopes are elements that have the same Atomic Number (Proton)
Some of the isotopes of oxygen are:
[tex]\tt _8^{16}O,_8^{17}O,_8^{18}O[/tex]
Each isotope has 8 protons and 8 electrons but has a different number of neutrons
For O-16: number of neutrons = 16-8 = 8
For O-17: number of neutrons = 17-8 = 9
For O-18: number of neutrons = 18-8 = 10
What is the change in entropy (AS) when sodium chloride dissolves in water?
I WILL GIVE BRANLIEST HELP HELP HELP THE SUBJECT IS ACTUALLY SCIENCE What factor is a mushroom in an ecosystem? Abiotic or Biotic?
Answer: The answer is biotic
Explanation:Mushrooms are biotic because they are living things. Abiotic means non living, so these are factors in the environment that influence a living thing's life and chance of survival
Answer: jdusjzj bacteria germs
Explanation:
How much heat is required to raise the temperature of a 6.21 g sample of iron from 25.0 oC to 79.8 oC?
Answer:
151.1J
Explanation:
Given parameters:
Mass of iron = 6.21g
Initial temperature of iron = 25°C
Final temperature of iron = 79.8°C
Unknown:
Amount of heat = ?
Solution:
The amount of heat require to cause this temperature can be determined using the expression below;
H = m c (T₂ - T₁)
H is the amount of heat
m is the mass
c is the specific heat capacity
T is the temperature
Specific heat capacity of iron 0.444J/g°C
Insert the parameters and solve;
H = 6.21 x 0.444 x (79.8 - 25)
H = 151.1J
Helpppppp i hate chemistry
I will give brainiest who helps me with the correct answer
I promise
5. Name the compound which contain Strontium, Fluorine, and Oxygen.
Options:
Strontium fluorate
Strontium fluoride
Strontium chlorate
Strontium fluorine
The growth of a plant toward light is called _____.
phototropism
tropism
geotropism
It's called phototropism
Answer:
The answer is (Phototropism)
Which of the following correctly describes the electrical charges of subatomic particles?
B Protons/positive; neutrons/negative; electrons/negative
C Protons/neutral; neutrons/positive ; electrons/negative
D Protons/negative; neutrons/neutral; electrons/negative
Answer:
D Protons/negative; neutrons/neutral; electrons/negative
Explanation:
There are three fundamental subatomic particles found in atom which are the protons, neutrons and electrons.
Protons are the positively charged particlesNeutrons are neutral and do not carry any chargesElectrons are negatively charged.In the tiny central nucleus, both protons and neutrons can be found
The electrons occupy the bulk volume of the atom.
Would CdF2 conduct electricity if dissolved in water?
When a metal conducts electricity, the charge is carried by electrons moving through the metal.
When naming acids the prefix hydro- is used when the name of the acid anion ends in___
Answer:
hydrochloric acid
Explanation:
These anions usually have the ending “-ide.” As acids, these compounds are named starting with the prefix “hydro-,” then adding the first syllable of the anion, then the suffix “-ic.” For example, HCl, which is hydrogen and chlorine, is called hydrochloric acid. More complex acids have oxygen in the compound.
HELP ME PLEASE ! I NEED HELP !
Which statement best completes the diagram?
Mexican culture
Most people live in
urban areas.
The most widely
spoken language is
Spanish
?
A. The most important literature is nonfiction
B. The most popular foods are vegetarian,
C. The most common religion is Catholicism.
D. Most people work as farmers.
Answer:
The answer is (c)
Explanation:
Answer:
C. The most common religion is Catholism.
Explanation:
I'm taking the quiz rn.
Question 2 (1 point)
Which of the following is the main reason the transition metals are able to exist in different forms?
а.
predictability in ability to bond
B.
unfilled d orbitals
C.
magnetic properties
D.
predictability in number of valence electrons
Answer:
B. Unfilled d orbitals
Explanation:
What would happen if a researcher failed to realize a thermometer he or she was using has a Celsius and Fahrenheit scale?
Answer:
To obtain a more accurate read on temperature, the researcher should make sure to measure temperature by Celsius degrees rather than Fahrenheit.
Explanation:
Temperature is a measure of heat intensity. In food science experiments, you should always require an exact description of heat intensity. The most commonly used unit of temperature in the laboratory is the Celsius degree because the Celsius temperature scale is based on the boiling and freezing points of pure water. The difference between the points of boiling and freezing temperatures (at 1 atmosphere of air pressure) is divided into 100 equal units, making a Celsius degree 0.01 of the difference between the boiling and freezing points of water, making it the most accurate method of exact temperature reading. It is important to use the Celsius scale if you have a thermometer that reads Celsius and Fahrenheit.
Which of the following equations is not balanced?
Explanation:
i think the answer is first and last
I WILL GIVE YOU BRAINLIEST HELP HELP HELP THE SUBJECT IS ACTUALLY SCIENCE What factor is deer in an ecosystem? Abiotic or Biotic? the subject is actually science
Answer: the answer is biotic because dear are a living factor
Explanation:
How are elements and compounds a part of our daily lives?
Answer:
Aluminium (A1) -Used in the production of duralumin alloy for use in the construction of aeroplane bodies. 3. Silicon (Si) -To make microchips 4. Sulphur (S) -To make matches, fireworks and for the manufacture of sulphuric acid 5.
Explanation:
Hope this helped!
Answer:
yes
Explanation:
we use different elements and compounds in our life ex salt and iron but most of the substances found in our environment are mixture btw scientists need to classified substances to work with our substances and to study pure substances hope it helps u
What are the coefficients that will balance the skeleton equation below?
___GaF3 +___KCN rightwards arrow___Ga(CN)3 + ___KF
A.
1, 3, 1, 3
B.
3, 1, 3, 1
C.
1, 1, 1, 3
D.
1, 3, 3, 1
1 points
QUESTION 6
The previous question is an example of what type of chemical equation?
A.
Synthesis
B.
Decomposition
C.
Single Re-Placement
D.
Double Re-Placement
1, 3, 1, 3
Explanation:
Ga - one on both sides
F - three on both sides
CN - three on both sides
K - three on both sides
But remember that CN was being multiplied by 3 on the right side already, meaning GA(CN)3 didn't mean a coefficient.
Answer:
Double re-placement
The two metals switched dance partners, that means it's a double.
An atom of a certain element has 12 protons, 14 neutrons, and 2 valence electrons. What is the name of this element?
Given :
An atom of a certain element has 12 protons, 14 neutrons, and 2 valence electrons.
To Find :
The name of this element.
Solution :
We know, element with atomic number ( number of protons ) 12 and valance electrons is Magnesium.
Now, isotope of magnesium of proton with 14 neutrons is Mg-16 .
Therefore, name of element is Mg-16 .
Hence, this is the required solution.