Answer:
[tex]\boxed {\boxed {\sf A. \ Barium (Ba)}}[/tex]
Explanation:
Lewis dot structures illustrate the valence electrons in an element.
Valence electrons are the outermost electrons in an atom that bond with other atoms by accepting or releasing electrons. The groups, or columns, of the Periodic Table have the same number of valence electrons.Calcium is in group 2.
The other elements in this group are:
Beryllium, Magnesium, Strontium, Barium, and RadiumSo, all these elements have the same lewis dot structures because they have the same number of valence electrons.
Based on the answer choices, choice A is correct.
Science and technology are different, yet related, fields of study. Which action is best classified as science?
A.
making a prosthetic leg to help a person walk
B.
building houses that can withstand strong earthquakes
C.
designing a faster type of computer
D.
analyzing cells of a newly discovered species
Answer:
Option D
Explanation:
analyzing cells is something I'm doing in science class right now!
Hope this helped, have a nice day! :)
Answer:
Science and technology are different, yet related, fields of study. Which action is best classified as science?
Explanation:
What’s the meaning of low metabolism
Answer:
A person with a "low" (or slow) metabolism will burn fewer calories at rest and during activity and therefore has to eat less to avoid becoming overweight.
meaning of normal metabolism-Metabolism is the process by which your body converts what you eat and drink into energy. Even when you're at rest, your body needs energy for functions such as breathing, circulating blood and repairing cells. The energy your body uses for these basic functions is known as your basal metabolic rate.
A person with a low metabolism will burn fewer calories at rest and during activity and therefore has to eat less to avoid becoming overweight.
Signs of a slow metabolism
-You have gas.
-You crave sugar.
-You keep gaining weight.
-It's tough to lose weight.
-You always feel bloated.
-You have hypothyroidism.
-You easily develop cellulite.
-Your blood sugar is too high.
In addition or subtraction, the result carries the same number of decimal places as the quantity carryi
the fewest decimal places.
The Earth’s inner core is made mostly of ____.
A) magma
B) halite
C) iron
D) diamond
Answer:
iron and nickel
______________
CO2 + H20 ----> C6H1206 + 02
*
14. What are the reactants of the reaction?
Explanation:
[tex]CO _{2} \: and \: H _{2} O[/tex]
Reactants must be on the left hand side of the reaction
What are all the elements in a column called? NO LOOKING IT UP and if u do put it in ur words
Answer:
There have been seven horizontal rows of elements are called phases in the periodic table of elements. Groups, or families, are called vertical columns of elements. Metals, – anti, and metals are the most common ways of classifying the periodic table.
Explanation:
Please HELP!! Which best describes CO2?
1)This is an ionic compound; it is named carbon
dioxide.
2)This is a covalent compound; it is named
carbon oxide.
3)This is an ionic compound; it is named carbon
oxide.
4)This is a covalent compound; it is named
carbon dioxide.
What is released during Cellular Respiration?
Energy from Glucose
Energy from Chlorophyl
Energy from Protein
Answer:
energy from glucose
Explanation:
HURRY PLEASE!! An atomic physicist determines that an atom is composed of 8 positively charged particles and has a mass of 15 amu. Which is the best conclusion that can be drawn?
A)The atom has 7 neutrons and 8 protons.
B)The atom has 7 electrons and 8 protons.
C)The atom has 8 neutrons and 7 electrons.
D)The atom has 8 electrons and 7 protons.
A solution is saturated in CO2 gas and KNO3 at room temperature. What happens when the solution is warmed to 75°C?
solid KNO, precipitates out of the solution
gaseous CO2 bubbles out of the solution
solid KNO, precipitates out and gaseous CO2 bubbles out
nothing happens; both CO2 and KNO3 remain in solution
Answer:
gaseous CO2 bubbles out of the solution
Explanation:
We already know that the dissolution of a gas in water is exothermic. Hence, when the temperature of a solution containing a gas is increased, the solubility of the gas decreases and the gas bubbles out of the solution.
Similarly, the dissolution of KNO3 in water is endothermic. This implies that the solubility of the solid increases with increasing temperature.
Thus the solid becomes more soluble at 75°.
When the solution is warmed to 75°C ; ( B ) gaseous CO₂ bubbles out of the solution
When a solution is saturated with CO₂ ( gas ) and KNO₃ ( s ) has its temperature increased above the room temperature to about 75°C the solubility of the gas CO₂ will decrease, because the solubility of gas in a solution decreases with an increase in temperature while the solubility of a solid increases with increase in temperature.
Since the solubility of the gas decreases the gas will escape as bubbles ( CO₂ bubbles ).
Hence we can conclude that When the solution is warmed to 75°C ; ( B ) gaseous CO₂ bubbles out of the solution.
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Is it true that the direct transfer of thermal energy between particles of matter that are touching is called conduction.
Why can small perennial weeds and grasses not serve as pioneer species during primary succession?
Answer:
because
Explanation:
because
What are two ways that atoms of different elements are different?
Answer:Explanation:Protons and other subatomic particles will be discussed a little later. The atoms of different elements are different from each other because they have different numbers of protons. The graphic below illustrates this point by showing the atoms of two elements in the containers of oxygen and hydrogen.
hi someone help me pls
Answer:
c
Explanation:
chemical change results from a chemical reaction where nothing is change example of chemical changes burning, cooking, rotting and rusting
Answer:
IM LOOKING FOR POINTSSSSS
Explanation:
PLS HELP
S
S
S
S
S
S
S
S
S
S
SS
SS
S
Can someone figure this out for me thank you
What is the valency of argon?
Answer:
0 electrons in outermost shell as it is a noble gas
Answer:
the valency of argon is 0
since it has complete valence shells , so it doesn't react with any other element
Define the problem: How do the structure and properties of foods change as
their components change?
Part 1 - Research Baking Substitutes
Prepare a pamphlet about baking with substitutions for people with allergies or health
concems. Research the role that a common ingredient found in baked good plays in
creating the expected texture and structure Choices could include eggs, baking
powder, oil, milk, or sugar Describe an ingredient that could be used as a substitute for
the ingredient you have chosen
Include answers to questions such as the following in your leaflet
1. SEP Obtain Information What type or types of molecules or compounds are in
the ingredient?
Answer:
alam ko sagot pero mataas lang
What is it?
Mg + O2 + Mgo
1. Decomposition
2.Double Displacement 3.Synthesis
4. Single Displacement
Answer:
The correct reaction is as follows:
2Mg + O2 → 2MgO
3. Synthesis
Explanation:
Chemical reactions are of different types depending on how they occur. One of these types is called SYNTHESIS OR COMBINATION REACTION. A synthesis reaction is that reaction in which two atoms of two elements are chemically combined to form a single molecule or compound. That is;
A + B → AB.
This is the case in this question where atoms of Magnesium (Mg) and oxygen (O) reacted to form a single compound of Magnesium oxide (MgO). Hence, it is said to be a SYNTHESIS REACTION.
Help!!!! What type of compound is N2O3? And what is its name?
Explanation:
Dinitrogen trioxide is a nitrogen oxide. Nitrogen trioxide appears as a blue liquid with a sharp, unpleasant chemical odor.
Description: Dinitrogen trioxide is a nitrogen oxide.ChEBINitrogen trioxide appears as ...
Synonyms: Dinitrogen trioxideNITROGEN TRIOXIDENitrogen oxide (N2O3)10544-7...
Molecular Formula: N2O3
Molecular Weight: 76.012 g/mol
If a 10 kg stone falls from a height of
30 m, what is the velocity of the stone
as it hits the ground?
Answer:
26.32 because z easy
Explanation:
Answer:
26.32 because z easy
Explanation:fds
Answer:
26.32 becfdseefdause z easy
Explansefdsefdsefdsenfuystyegfsvfgvsfhs76ieu4fguyhgvrykes4rjehrfgehg4fuebecause z easy
Explanasetion:sf
26.32 because z easy ef
Explanation:
Answer:ds
26.32 because z easy
Explanation:
hbdshfiushyAnswer:
26.32 because z easy
Explanation:
Answer:
26.32 because z easy
Explanation:fds
Answer:
26.32 becfdseefdause z easy
Explansefdsefdsefdsenfuystyegfsvfgvsfhs76ieu4fguyhgvrykes4rjehrfgehg4fuebecause z easy
Explanasetion:sf
26.32 because z easy ef
Explanation:
Answer:ds
26.32 because z easy
Explanation:
hbdshfiushy
Giving brainliest please help with this question
Answer:
B! Hope this helps! :)
Explanation:
What happens to your hypotheses as new information is gained
ALL I ask is you answer correctly I'm having a bad day ! :(
Jimmy Fallon was playing with acids and bases and was trying to determine how many grams of Copper (I) Hydroxide he would need to create 48.76 grams of Copper (I) Phosphate when reacting it with Phosphoric Acid.
Answer:
i have no clue whats going on here but imma act like i do.....
Explanation:
The ability of iron to conduct electricity is a physical property of iron. *
True
False
Answer:
True
Explanation:
A physical property is a property that can be measured without changing the chemical composition of the substance.
The chemical composition of iron does not change when it conducts electricity so conductivity is a physical property.
Hope that helps.
Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the given statement is true.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.
A physical property is a property that can be measured without changing the chemical composition of the substance. So, ability of iron to conduct electricity is a physical property of iron
Therefore, the given statement is true.
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What element was most recently discovered?(2010 A.D.)
Tennessine (Ts)
Element #117
Discovered: April 5, 2010
In an unexpected temperature change,
what causes the temperature change?
Answer:
WEATHER!
Explanation:
Weather can cause an unexpected temperature change! :) Hope this helps!
How many moles are in 3.63 x 1023 atoms of Mn?
Answer:
0.603 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{3.63 \times {10}^{23} }{ 6.02 \times {10}^{23} } = \frac{3.63}{6.02} \\ = 0.60299...[/tex]
We have the final answer as
0.603 molesHope this helps you
Click Oil Basics to explore the natural resources needed for the production of plastics. Use the information to answer the question. Which of these ingredients is important in making plastics? carbon dioxide particulate matter natural gas plant liquids volatile organic compounds
Answer:
natural gas plant liquids
Explanation:
The ingredients that are important for the production of plastics are natural gas and plant liquids. The correct options are c and d.
What is plastic?Polymers are the primary component of a wide variety of synthetic or semisynthetic materials known as plastics. Due to their versatility and importance to civilization, plastics are a very important material. This is due to the fact that plastics can be bent and molded into a variety of objects, from plates to phones.
Radiation is to blame for this becoming possible. People who manufacture plastics can heat polymers sufficiently to allow them to bend by employing radiation. They can then be formed into a variety of things when this occurs.
Plastics are made from natural gases and liquids obtained from plants.
Therefore, the correct options are c, natural gas, and d, plant liquids.
To learn more about plastic, refer to the link:
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BRAINLIEST !!! HELP PLZ
Answer:
Hcl Answer
Explanation:
may be this helpful!
What shapes do s, p, d represent?
