Answer:
the answer is coal
Explanation:
13
0121
This question is about sodium and chlorine.
FIGURE 2 shows the positions of sodium and
chlorine in the periodic table.
FIGURE 2
CI
Na
02
State ONE difference and ONE similarity in t
electronic structure of sodium and of chlori
[2 marks]
The question is asking you to compare each elements electrons, specifically valence since it mentioned their placement on the table.
Similarly: they both are only one electron away from stability (a full octet)
Difference: Sodium will want to loose the one electron, and Chlorine will take it.
2H2S + 3O2 → 2SO2 + 2H2O
1. For every 10.0 g of H2S how many moles of SO2 are formed?
Answer:10
Explanation:
Is it OK for people to post fake vacation pics and other fake info on social media? Why or why not? Use facts and details from the Article to back up your answer.
Answer:
No, It is not okay to pretend on social media.
Explanation:
No, it is not okay for people to post fake vacation pics and other fake info on social media. This is very wrong, as -
This 'all time look good, feel good, have a happening life' approach of social media - implies showing only the positive side & not negative side of people's life. However, in real life is not a bed of roses. Faking things out implies that pretending to be cool has become more important than sharing deep meaningful relationships, & highlights superficial desire of false popularity. It is also harmful to people being communicated this fake image, as they might indulge into any social involvement, on the basis of unreal image of the concerned person.Answer:
it is not ok because there are other people that will look at those pictures and say aww i wish i were them but we all need to exept who we are
hope this helped
mark me brainliest please
Explanation:
what components of blood can be examined
Which describes the horizons in a soil profile?
Answer:
Bedrock lies below the soil layers.
Horizon O forms from organic material.
Horizon C is least affected by the soil formation process
Explanation:
Hope this helped
Answer:
it's c i think
Explanation:
Help! Please will give brainliest for right answer!
Answer:
a positive nucleus gets smaller the negative electrons are attached closer in
Explanation:
write the name of and molecular formula of compound which gives hydrogen ion and chloride ion in the solution state. in which colour is the methyl orange changed after treating it with this compound. why? write the name of salt when the compound is treated with lime water. write the chemical equation.
Why is aspirin sometimes buffered? Will give brainliest.
Answer: the aspirin also contains a buffering agent—usually MgO—that regulates the acidity of the aspirin to minimize its acidic side effects.
Explanation:
Because the acid residences of aspirin may be complex, many aspirin manufacturers provide a "buffered aspirin" form of the drug. In these cases, the aspirin additionally includes a buffering agent-normally MgO-that regulates the acidity of the aspirin to minimize its acidic aspect consequences.
Why may a buffer be added to aspirin?Buffering agents are utilized in tablet formulations to grow the dissolution and absorption of vulnerable acid pills together with salicylic acid, aspirin, and p-aminosalicylic acid as well as to lower gastric infection of lively ingredients.
Why is buffered aspirin not a buffer?So-called "buffered aspirin" isn't surely a buffer, because it does no longer face up to acids and bases. it's miles sincerely aspirin mixed with a primary compound, consisting of magnesium carbonate or aluminum hydroxide, which neutralizes some belly acid.
Learn more about Aspirin at https://brainly.com/question/13533428
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A 20.0g sample of metal with a specific heat of 5 J/(g°C) raised it's initial temperature to 40.0 when 500J heat was added. What was the initial temperature of the metal?
The initial temperature of the metal = 35 °C
Further explanationHeat can be formulated :
Q = m . c . ΔT
Q = heat, J
c = specific heat, J/g C
ΔT = temperature, °C
m = 20 g
c = 5 J/(g°C)
Q = 500 J
T₁ = 40 C
the initial temperature :
[tex]\tt \Delta t(T_2-T_1)=\dfrac{Q}{m.c}\\\\40-T_1=\dfrac{500}{20.5}\\\\40-T_1=5\\\\T_1=35^oC[/tex]
The Electron Affinity(EA) tends to _________ as the atomic number increases In any group.
a.)increase
b.)decrease
:) thank uuu
Answer:
decrease
Explanation:
Which tool would be best to allow you to make observations of an object's color and texture?
A Digital Camera
B Balance Scale
C Graduated Cylinder
D Digital Thermonter
Answer:
A digital camera. You can zoom and all that stuff and see individual pixels when close up. Also none of the other options would make sense.
Explanation:
What classification should this reaction have? CaC12 + F2 = CaF2 + CI2
Answer:
Single-Replacement Reaction
General Formulas and Concepts:
Types of Reactions
Synthesis Reactions: A + B → AB Decomposition Reactions: AB → A + B Single-Replacement Reactions: A + BC → AB + C Double-Replacement Reactions: AB + CD → AD + BCExplanation:
Step 1: Define reaction
CaCl₂ + F₂ → CaF₂ + Cl₂
Step 2: Identify backplate
Single-Replacement Reactions: A + BC → AB + C
BC = CaCl₂
A = F₂
AB = CaF₂
C = Cl₂
can i get some help with this
Answer:
Velocity
Explanation:
Velocity is a vector quantity that mentions the direction of the object(north, south, etc..) speed is not a vector quantity.
I think this is the answer, I hope this helps!
Liquid Nitrogen’s temperature is minus what degress
Answer:
-320f
Explanation:
You have a 155-g sample of Al2O3. If there are 22.5 g of Al in the solution, what is the percent by mass of the solute? Use details to support your answer.
Answer:
14.52%
Explanation:
The percentage by mass (WW%) is calculated by using the formula:
Mass of solute/mass of solution ×
100
The solute (Al) is 22.5g while the solvent (Al2O3) is 155g
Hence, percent by mass is:
22.5/155 × 100
= 0.1452 × 100
= 14.52%
The specific heat of water and steam (water vapor) are 4.18
J/gºC and 2.10 J/gºC respectively. Heating a 74.0 g sample of
water from 88.3 °C to water vapor at 112.5 °C requires 172.58 kJ
of heat. Calculate the heat of vaporization of water in kJ/g.
Assume the boiling point of water is 100 °C.
please help
Answer: 2.26
Explanation:
The heat of the vaporization of water is equal to 2.33 KJ/g.
What is the specific heat capacity?The specific heat capacity can be explained as the quantity of heat required to raise the temperature in one unit of substance by 1 degree Celcius.
The specific heat can be represented in terms of gained or lost heat:
Q = mCΔT
The heat of vaporization can be described as the amount of heat required to turn one gram of a liquid into a vapor, without an increase in the temperature of the liquid.
Given, the amount of heat gained by water, Q = 172.58 kJ
The change in the temperature = 112.5 - 88.3 = 24.2 °C
The specific heat capacity of the water = 4.184 J/g°C
The mass of the water, m = 74 g
The heat of vaporization of water H = q/m
H = 172.58/74
H = 2.33 KJ/g
Therefore, the heat of the vaporization of water is equal to 2.33 KJ/g.
Learn more about specific heat capacity, here:
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EXTRA POINTS!
Which organism has Ganglia?
A: Sponge
B: fish
C: hydra
D: flatworm
Answer:
flatworm
Explanation:
Answer:
D.) Flatworm
Explanation:
Took the test :)
plz help with this........
ITS [tex]C_{4}H_{10}[/tex] AND [tex]C_{5}H_{12}[/tex]
_____________________________________GENERAL FORMULA OF ALKANE [tex]C_{n}H_{2n+2}[/tex]Where n is the number of CARBONS
_____________________________________A)
By using the General Formula of Alkanes having 4 carbon atoms is
[tex]C_{4}H_{2x4+2}[/tex]
[tex]C_{4}H_{10}[/tex]
C)
By using the General Formula of Alkanes having 5 carbon atoms is
[tex]C_{5}H_{2x5+2}[/tex]
[tex]C_{5}H_{12}[/tex]
_____________________________________IF YOU USE THE SAME FORMULA FOR THE OTHER TWO OPTIONS THE OUTCOME WILL NOT BE AS SAME AS GIVEN IN THE QUESTION SO THOSE TWO ARE CAN NOT BE OUR ANSWER
_____________________________________HOPE THIS HELPS!
How many moles of nitrogen dioxide gas will be produced if 25.0 ml of 2M nitric acid react?
Cu + HNO3 = Cu(NO3)2 + NO2 + H2O
Answer:
0.025 moles of NO₂ will produced
Explanation:
Given data:
Moles of NO₂ formed = ?
Volume of HNO₃ = 25.0 mL
Molarity of HNO₃ = 2 M
Solution:
Chemical equation:
Cu + 4HNO₃ → Cu(NO₃)₂ + 2NO₂ + 2H₂O
Number of moles of HNO₃:
Molarity = number of moles / volume in L
2M = number of moles / 0.025 L
Number of moles = 2 M × 0.025 L
Number of moles = 0.05 mol
Now we will compare the moles of HNO₃ with NO₂ from balance chemical equation.
HNO₃ : NO₂
4 : 2
0.05 : 2/4×0.05 =0.025
0.025 moles of NO₂ will produced.
Write a balanced equation for the following reaction;
potassium metal reacts with nitrogen gas to form potassium nitride
Answer:
6K + N₂ —> 2K₃N
Explanation:
K + N₂ —> K₃N
The above equation can be balanced as illustrated below:
K + N₂ —> K₃N
There are 2 atoms of N on the left side and 1 atom on the right side. It can be balance by putting 2 in front of K₃N as shown below:
K + N₂ —> 2K₃N
There are 6 atoms of K on the right side and 1 atom on the left side. It can be balance by putting 6 in front of K as shown below:
6K + N₂ —> 2K₃N
Now the equation is balanced.
What do small-scale convection currents create?
A. Solar winds
B. Prevailing winds
C. Global winds
D. Local winds
Answer:
Local Winds
Explanation:
Answer: I think it would be D. Local winds
Explanation: Sorry if I am wrong.
Hope this helps :)
A cinder block is sitting on a platform 20 m high. It weighs 79 N. The block has ____________ energy.
A. Kinetic
B. Potential
Answer:kinetic
Explanation:
Thank
Answer:
B.
Explanation:
The block has potential energy.
Phillip throws a basketball up in the air and through a hoop. Because the ball is acted on by the force of gravity, the ball will —
Answer:
Fal down to the flour
Explanation:
Because of gravity their is weight that weight keeps us down to earth everything has weight even a leaf not only weight but the atmosphere is like a wall that keeps us safe from all the stuff in space.
Al colocar unos trocitos de zinc en un tubo de ensayo, agregamos 2 mL de acido clorhídrico. El Zinc sustituye el hidrogeno del acido para formar una sal (ZnCl2) con el cloro Zn+2HCl-- ZnCl2 +H2 El nombre correcto de esta sal en la nomenclatura sistemática es
Answer:
DICLORURO DE ZINC
Explanation:
La ecuación es:
Zn (s) + 2HCl (aq) → ZnCl₂ (aq) +H₂ (g)
El zinc reacciona en una reacción redox con el acido clorhídrico para formar una sal y liberar el hidrogeno gaseoso.
Se trata de una reacción redox porque el hidrógeno se reduce (disminuye el numero de oxidación, de -1 a 0, en su estado fundamental), mientras que el Zn se oxida (el numero de oxidación aumenta de 0 a +2).
Como la sal se forma con dos atomos de cloro, se denomina dicloruro por lo que el nombre correcto de la sal en nomenclatura sistemática es:
- DICLORURO DE ZINC
Other than identifying a target for gene therapy, how does identifying a disease-causing mutation help a patient and their family?
Explanation:
Because if the family has the same disease and DNA then the cure will be compatible.
True or False: Natural selection doesn't happen anymore.
How do you changes in the environment affect species extinction?
Answer:
Climate change leads to a loss of species
With these changes, species have to adapt to new climate patterns (variations in rainfall; longer, warmer summers etc). ... The consequences include habitat loss; shifts in climatic conditions and in habitats that surpass migrational capabilities; altered competitive relationships.
Explanation:
Thank you
What are the parts of the earths mantle? A) Inner core, asthensophere, lithosphere
B) lithosphere, asthenosphere, mesosphere
C) crust, lithosphere, asthenosphere
D) mesosphere, asthenosphere, troposphere
Answer:
B
Explanation:
The mantle is composed of the mesosphere and the asthenosphere in the upper most part and in the crust is the lithosphere
1 Compressing a spring increases its
A kinetic energy
B potential energy
C electrical energy
D chemical energy
Please help immediately this is a question on my test. <3
(Science)
Answer:
Potential Energy
Explanation:
By compressing the spring there is more potential energy.
A hypothesis is made at
the conclusion of all research
the conclusion of an experlment
some point during an experiment
after gathering initial data and defining the research
Answer:
a hypothesis is an assumption before further investigation (a guess)
Explanation:
hello hello I hope this helps LOL have a nice dayyyyy
Answer:
after gathering initial data and defining the research
Explanation:
"Hypothesis" refers to the researcher's scientific guess or prediction about the outcome of a research. Such expectation is being done after gathering initial data and defining the research, which means it happens before even conducting the study.
Under hypothesis, the variables' relationships are being predicted but with no evidence yet. It is very important to make a hypothesis according to three criteria: specificity and clearness, testability and falsifiability.
