Answer:
Greenhouse effect
Explanation:
Answer: water vapor, carbon dioxide and other gases absorb and reradiate thermal energy.
Explanation:
Please help I will mark brainy
Answer:
the answer is c I took the test
is bird seed homogeneous or heterogeneous
Answer:
heterogeneous
In order to give birds a varied and balanced diet, commercial bird seed blends typically include a range of seeds, grains, and other substances. As a result, bird seed is frequently categorised as a heterogeneous blend.
A seed is referred to as homogenous if its genetic makeup, size, shape, and other traits are all consistent. To guarantee consistency in the ensuing plants, these seeds are typically created through controlled breeding or genetic manipulation. A heterogeneous seed, on the other hand, is one that varies in genetic makeup, size, shape, and attributes. These seeds frequently result from cross-pollination or natural pollination between various species or kinds.
To know more about heterogeneous seed, here:
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Which measurement is a vector?
How much oxygen (O) is in 5.41 × 106 atoms of oxygen
Answer:
They show you how to do it sweetie
Explanation:
123456789 Common math
Make
a claim about why cells need ribosomes.
Summarize evidence to support the claim
and explain your reasoning.
ls?
Carbon tetrafluoride, CF, contains four identical C-F bonds. Fluorine is more
electronegative than carbon. How will this impact each of the bonds between carbon and
fluorine?
a. The electrons in each C-F bond will be more attracted to the carbon atom.
b. The electrons in each C-F bond will be attracted equally to both atoms.
C. The electrons in each C-F bond will be more attracted to the fluorine atom.
d. The electrons in each C-F bond will separate easily.
Answer:
C. The electrons in each C-F bond will be more attracted to the fluorine atom.
You are sitting in the central park bleachers of a Major League baseball park. You see a batter strike a pitched ball. About 0.4 seconds later you hear the contact between the bat and the ball. In terms of the properties of light and sound waves, how do you explain the difference in the communications you receivedbabout the same event?
Answer:
See the answer below
Explanation:
The speed of light in air and space is faster than the speed of sound in the same media. Light travels with a speed of approximately 3 x [tex]10^8[/tex] m/s while sound can only travel at 343 m/s (at 20 [tex]^oC[/tex]).
Consequently, the visuals of a batter striking a pitched ball which travel by light and is perceived through the eyes would be seen before the sound of the strike.
The difference in the speeds of light and that of sound largely explains the difference in the communication received about seeing a batter striking a pitched ball before hearing the sound of the strike
Help fast please What is the definition of homeostasis?
A. Your body out of balance
B. Being sick
C. Your body not needing any regulation
D. Your body systems staying in balance
Answer:
I think its D
Explanation:
Answer:
D
Explanation:
It's B because homeostasis is the ability to maintain a relatively stable internal state that persists despite changes.
Hope this helps!!! If this is incorrect, I'm so sorry! Have a lovely day.
What do radio waves and microwaves have in common?
O Both have shorter wavelengths than visible light
O Both are at the side of the spectrum that has the highest frequency
O Both have lower frequencies than visible light
O Both have radiant energy than visible light.
Answer:
The last one
Explanation:
How many moles are there in 5.2x10^23 atoms of CO2?
Answer:
0.86 moles of CO₂
Explanation:
Given data:
Number of atoms of CO₂ = 5.2×10²³ atom
Number of moles = ?
Solution:
Avogadro number:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
5.2×10²³ atom× 1 mol / 6.022 × 10²³ atoms
0.86 mol
how much heat is absorbed when 15.0 g of liquid water is heated until the temperature increases by 16.0.
which information does the chemical formula co2 not give you?
A. number of valence electrons in each atom
B. ratio of atoms in the compound
C. total number of atoms in one molecule of the compound
D. type of elements in the compound
Answer:
A
Explanation:
Considering the definition of chemical formula, the correct answer is option A): number of valence electrons in each atom.
A chemical formula is the representation of the elements that make up a compound and the proportion in which they are found, or the number of atoms that make up a molecule.
In other words, a chemical formula is an alphanumeric expression that is used to indicate the composition of a chemical substance and that is constructed from the symbols of its constituent elements, affected by numerical subscripts that report the number of atoms of each element that it is part of the substance.
In summary, the correct answer is option A): number of valence electrons in each atom.
Learn more:
https://brainly.com/question/18452587?referrer=searchResultshttps://brainly.com/question/21406550?referrer=searchResultsWhat is the hybridization of the carbon in the HCN molecule?
Which element is probably most like Carbon? and why
QUESTION 10
Which of the following is not a characteristic of ionic compounds?
A. Contains metals and non metals
B. Ions form a crystal structure
C. Conducts electricity in the solid state
D. High melting point
Answer: C. Conducts electricity in the solid state
Explanation:
if you had 15 moles of Oxygen (O2), how many moles of water (H2O) would you be able to make?
Answer:
30 moles of water will produced.
Explanation:
Given data:
Number of moles of O₂ react = 15 mol
Number of moles of water formed = ?
Solution:
Chemical equation:
2H₂ + O₂ → 2H₂O
Now we will compare the moles of water with oxygen.
O₂ : H₂O
1 : 2
15 : 2×15 = 30 mol
30 moles of water will produced.
Which formula represents an ionic bond? 1 NaCl 2 N2O 3 HCl 4 H2O
Answer:
1 NaCl
Explanation:
NaCl is sodium chloride, and sodium chloride is an ionic compound because it's held together with ionic bonds.The gas could be which of the following? Select all that apply. Hint: These gases are more dense than air. Nitrogen Neon Argon Carbon Dioxide Helium Hydrogen Propane Carbon Monoxide
Answer:
nitrogen, oxygen, carbon dioxide, argon, hydrogen, helium
Explanation:
A radioactive substance has a half life of 2.5 days. How much of 25.0 z is left after 10 days?
1.563 g
Further explanationGiven
A half life of 2.5 days ⇒ t1/2 = 2.5 days
initial sample ⇒ 25 g
duration of decay ⇒ 10 days
Required
sample left after 10 days
Analysis
Use decay Formula :
[tex]\tt Nt=No.\dfrac{1}{2}^{T/t1/2}[/tex]
Solution
[tex]\tt Nt=25.\dfrac{1}{2}^{10/2.5}\\\\Nt=25.\dfrac{1}{2}^4\\\\Nt=\boxed{\bold{1.563~g}}[/tex]
Paraphrase
Substance left after 10 days = 1.563 g
What is the subscript of 3MgC12
Help plz 15 pointsss
Which of the following is not a clue that a chemical reaction has taken place? *
4 points
A solid is formed when two clear solutions are mixed.
A clear solution is added to a red solution, and the result is a blue solution.
A solid is added to water and bubbles form.
A pure solid is heated and turns into a pure liquid.
Answer:
A pure solid is heated and turns into a pure liquid.
Explanation:
No colour change recorded, only change of state, hence this is a physical change - physical changes I.e. change of state and temperature are not chemical reactions.
A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have?
13
5
9
4
Answer:
It has 5 neutrons
Explanation:
The fact that it is a neutral atom tells us that the number of electrons and protons is the same:
The problem tells us there are 4 electrons, thus there are 4 protons.The average mass of an atom is the sum of the number of protons and the number of neutrons:
Mass = # Protons + # NeutronsWith the above information in mind we can calculate the number of neutrons:
9 amu = 4 Protons + # Neutrons# Neurons = 5 NeutronsI need to someone to explain the whole being of Chemistry. I do not understand a single thing, nothing makes sense to me. Literally, I'm going to fail this class because I do NOT understand a single thing taught to me. Maybe it's because I was mistakenly put into Chemistry Pre AP instead of on level but it's so hard and- I just do not get it.
Answer:
Explanation:
In Pre-AP Chemistry, the development of models to explain their macroscopic observations is a primary means through which students develop an understanding of the molecular world.
You will be forced to think and apply concepts to new situations, and even derive your own theories from application. This is excellent preparation for the higher levels of thinking required in college.
Chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.
an atom has 11 protons, 12 neutrons, and 11 electrons. what is the charge of the atoms nucleus?
A) +11
B) -11
C) 0
D) 23
Answer:
Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.
Explanation:
What is the percentage composition of each element in carbon dioxide, CO2? Remember percent composition is based on mass. (Show your calculations for full credit.)
%C = 27.3%
%O=72.7%
Further explanationProust states the Comparative Law that compounds are formed from elements with the same Mass Comparison, so that compounds have a fixed composition of elements
The empirical formula is the mole ratio of compounds forming elements.
MW CO₂ : 44 g/mol
Ar C = 12 g/mol
Ar O = 16
%C[tex]\tt \dfrac{12}{44}\times 100\%=27.3\%[/tex]
%O[tex]\tt \dfrac{2.16}{44}\times 100\%=72.7\%[/tex]
why is a rise in sea level significant?
Answer:
I honestly dont know but its cool problably from water fill or from the waves going to much
Explanation:
what is the density of a liquid if it's volume is 125 mL and it's mass is 50g?
Answer:
0.4g/ml
Explanation:
density= mass/volume
density=50g/125ml
density=0.4g/ml
Which of the following would cause the seasons on Earth to change more gradually?
A Increasing the amount of time it takes Earth to orbit the Sun.
B Increasing the number of times Earth rotates on its axis per year.
C Decreasing the speed of the Moon’s orbit around Earth.
D Decreasing the amount of energy the Sun emits per year.
Answer: The four seasons happen because of the tilt of the Earth's axis. At different times of the year, the sun's rays hit different parts of the globe more directly. The angle of the Earth's axis tilts the Northern Hemisphere towards the sun during the summer.
Explanation: I am not gonna tell u what exactly to pick but this should give an idea okai? Hope I can help u :)
Answer:
so whats the answer?
Explanation:
Which of the following atoms has the highest first
ionization energy?
a. helium
6. potassium
d. hydrogen
e. carbon
Answer:
Helium
Explanation:
The first ionization energy varies in a predictable way across the periodic table.