Answer:
A system is a collection of parts that interact together for a common purpose. But a system is not just any old collection of parts. No single part can do the job alone, and any malfunction or delay is likely to affect the whole system. A body system is a set of body parts that do a particular task.
Explanation:
When an electron in an atom moves from a higher, less stable level, down to a lower, more stable level, a photon is
A)
created.
B)
emitted.
C)
absorbed.
D)
destroyed.
Answer:
Emitted
Explanation:
Answer:
B. emitted.
Explanation:
4.564000 x 10^-4 express how many significant figures
Answer: 7
Explanation:
Before a number but after a decimal. The zeros at the end would usually mean that it doesn't count but since the numbers are before the zeros and after a decimal it's 7 sig figs
The molecular weight of Magnesium Sulphate
WILL GIVE BRAINLIEST!!
When salt is added to the solution, it dissolves into its component ions. How did this seem to affect the compound formed on the egg shell?
Answer:
because the salt will melt the egg shell because of whats in the salt
i tried i didnt really know the answer LOL
Explanation:
How is burning wood a good illustration of the law of conservation of mass?
How many atoms are in 3C2H6
Answer:
Two carbon atoms and six hydrogen atoms = 8 atoms
Explanation:
cer about Why do space objects fall to Earth?
The student performed an experiment to test his hypothesis about sunlight and plant height using two plants. He kept everything the same between two tomato plants except he exposed them to different amounts of sunlight. He also used a third plant as a control group, or a group in which no variables are manipulated to confirm the results. Roberto critiqued the work. Which problem did Roberto most likely identify? 1.The sample size is too small. 2.Too many variables are manipulated. 3.It is not possible to keep the conditions the same. 4.Controls should only be used in studies of animals.
Answer:
The sample size is too small
Explanation:
In this case, the sample size refers to the number of plants in the experiment. Only one plant was assigned to each group. This sample size is too small to derive any statistically significant meaning from the outcome of the experiment.
If a larger sample size is used, a more accurate mean value will be obtained. It will also be easy to identify any outliers that could cause the data to be skewed if the sample size were to be smaller. Use of larger sample size decreases the margin of error in the experiment.
When an electron is promoted to a higher energy level what is the new state called
Which statement describes an intensive property of matter?
It is the same for every sample of a single substance.
It depends on how a substance was formed.
It is the same for every sample of every substance.
It depends on the amount of substance present.
Answer:
It is B on edge, iv just finished taking the quiz :)
Explanation:
Hope this helps! Let me know if you need anymore help:)
Answer: The answer Is : It depends on how a substance was formed
Explanation:
Took the test on edge and got 100%
an oxygen atom with 9 neutrons in its nucleus (Enter your answer using the format AX.)
The outer shell of this element was determined as illustrated here. It must be a _____.
: light metal
: heavy metal
: non metal
: noble gas
The outer shell of the given element was determined as illustrated must be a noble gas. Therefore, option D is correct.
What are noble gases?Noble gases can be described as the 6 elements that are organized in group 18 of the modern periodic table. The noble gases are Helium, Neon, Argon, Krypton, Xenon, and Radon.
Under standard temperature and pressure, noble gases exist in the gaseous form and possess low reactivity. Therefore, noble gases are also referred to as inert gas. All the noble gases exhibit stable electronic configurations in their valence shell that are completely filled. Noble gases generally exist as monoatomic.
The general outer configuration of the noble gases can be written as ns²np⁶, n is the principal quantum number. Therefore, the given electron dot diagram has eight electrons in its valence shell so it is representing a noble gas.
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Definition of volume
Answer:
The amount of space an object occupies.
Explanation:
How many grams of Ag are there in 0.901 moles of Ag?
Answer:
The answer is 0.0092705727916105. We assume you are converting between moles Ag and gram.
Explanation:
Answer:
97.2 g Ag
Explanation:
Molar mass of Ag = 107.86 g/mol
0.901 moles Ag x (107.86 g Ag/ 1 mol Ag) = 97.2 g Ag
Moles cancel and you are left with grams of Ag. Multiply 0.901 by 107.86 to find grams of Silver.
Antibiotics do not reduce the number of helpful and harmful bacteria in the microbiome.
O True
O False
Answer:
false; the purpose of antibiotics is to kill bacteria
Explanation:
It is true, it does reduce the number in both categories.
I know all the answers, i just need help identifying key words to show my work.
Explanation:
please the picture is blurry it's very hard to read can you take another picture. am sorry
Answer:
Can u make the clues bigger
Explanation:
ASAP MULTIPLE CHOICE WILL MARK BRAINLIEST
Chlorine has an atomic number of 17.
How many protons are in an atom of chlorine?
17
18
35
52
Explanation:
The protons are in an atom of chlorine is also 17. So , mark this answer as BRAINLIEST answer.Thank you ☺️☺️
How hot can the sun’s photosphere get?
A-15 million °C
B-46 million °C
C-1.5 million °C
D-4,600°C
Answer:a
Explanation:
Catalysts are ______ that increase the rate of a chemical reaction
Answer: substance reactions
Explanation:
how many people have o- blood right now
Answer:
7% of people
Explanation:
What are the 6 types of chemical reactions?
Answer:
Explanation:
Six common types of chemical reactions are: synthesis, decomposition, single-displacement, double-displacement, combustion and acid-base reactions .
Chemical reactions can be classified into six main types based on their characteristics. The six types of chemical reactions are Combination (Synthesis) Reaction, Decomposition Reaction, Displacement (Single Replacement) Reaction, Double Displacement (Double Replacement) Reaction, Combustion Reaction, and Redox (Oxidation-Reduction) Reaction.
Combination reactions involve the union of two or more substances to form a more complex compound. Decomposition reactions involve the breakdown of a single compound into simpler substances.
Displacement reactions occur when an element displaces another element in a compound, resulting in the formation of a new compound and a different element. Double displacement reactions involve the exchange of ions between two compounds, leading to the formation of two new compounds.
Combustion reactions occur when a substance reacts rapidly with oxygen, producing heat and light. Understanding these different types of chemical reactions helps in predicting and understanding the behavior of substances during chemical transformations.
Therefore, the six types of chemical reactions are Combination (Synthesis) Reaction, Decomposition Reaction, Displacement (Single Replacement) Reaction, Double Displacement (Double Replacement) Reaction, Combustion Reaction, and Redox (Oxidation-Reduction) Reaction.
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How do you identify the solute and solvent of SO^2
Answer:
How to identify a solute and solvent?
It is not possible to identify the solute and solvent as different substances in a solution. In a solution of table salt and water, the salt is the solute and the water is the solvent. In the cells of your body, substances such as calcium ions and sugar are solutes, and water is the solvent.
Explanation:
Answer:
Fórmula química: SO2 estado=Gas
Punto de ebullición: -10 °C (14 °F)
Masa molar media: 64,06 g/mol
Punto de fusión: -72 °C (-97,60 °F)
Denominación según IUPAC: Dióxido de azufre
Explanation:
Which sequence represents the relationship between temperature and volume as explained by the kinetic-molecular theory? higher temperature Right arrow more kinetic energy Right arrow more space between particles Right arrow higher volume higher temperature Right arrow less kinetic energy Right arrow less space between particles Right arrow higher volume higher temperature Right arrow more kinetic energy Right arrow less space between particles Right arrow lower volume higher temperature Right arrow less kinetic energy Right arrow more space between particles Right arrow lower volume
Answer:
higher temperature → more kinetic energy → more space between particles higher volume
Explanation:
Kinetic Molecular Theory states that gas particles exhibit perfectly elastic collisions and remain in constant motion. Absolute temperature is directly proportional to the average kinetic energy of gas particles.
The following sequence represents the relationship between temperature and volume as explained by the kinetic-molecular theory:
higher temperature → more kinetic energy → more space between particles higher volume
Calculate the mass of 20 moles of Fe
Answer:
1116.9g
Explanation:
The mass of 20 moles of Fe is 1116.9 g or 1117 g/mol.
Calculation,
The mass of one mole of [tex]Fe[/tex] = 55.85 g/mol
Mass of 20 moles of [tex]Fe[/tex] = 20×55.85 g/mol
Mass of 20 moles of [tex]Fe[/tex] = 1116.9 g ≈ 1117 g/mol
What is molar mass ?The mass of the one mole of the substance (atom) is called molar mass.
Example: The molar mass of [tex]Fe[/tex] is 55.85 g/mol
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What is the name of the group of elements that are unreactive gases?
Actinides series
Halogen gases
Lanthanide series
Noble gases
Answer:
halogen gases is not reaction
Answer:
Halogen Gases
Explanation:
How many sig figs are in 2.3400?
Answer:
5 fig Hope this helps!
I hate asking for things, but may I have brainliest I'm trying to rank up.
Explanation:
Sig Figs
5
Decimals
4
Scientific Notation
2.3400 × 100
Words
two point three four
Since sodium chloride is classified as a compound, a sample of it contains A. atoms that are gases, liquids, and solids. B. matter that cannot be reduced to atoms. C.more than one kind of atom. a solution of atoms and molecules.
Answer:
more than one kind of atom. a solution of atoms and molecules.
Explanation:
Although the formula for sodium chloride is NaCl, the compound does not contain actual NaCl molecules. Rather, it contains equal numbers of sodium ions with a charge of positive one (Na+) and chloride ions with a charge of negative one (Cl−).
Since sodium chloride is classified as a compound, a sample of it contains more than one kind of atom, a solution of atoms and molecules.
Compounds are generally made up of atoms of different elements. The elements could be two or even more than two.
Compounds are as opposed to elements because the latter contains atoms of the same substance.
Molecules are the smallest unit of a compound that can take part in reactions.
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One isotope of carbon has 6 protons and 6 neutrons. The number of protons and neutrons of a second isotope of carbon would be _____.
a. 7 and 6
b. 7 and 7
c. 6 and 6
d. 6 and 7
can you help again
will be the brainiest
Answer:
B
Explanation:
Which of these statements is supported by the results of the Thompson’s experiment?
Answer:
um do u have a pic cuz i dont get it