Answer:
water, lead, and wood
Explanation:
All are correct on Edg 2020
Answer:
Which material has the highest specific heat?
water
Which material has the lowest specific heat?
lead
Which material has the ability to absorb twice as much heat as aluminum when placed in the same environment of mass and temperature?
wood
Explanation:
Help! Please will give brainliest for right answer!
Answer:
a positive nucleus gets smaller the negative electrons are attached closer in
Explanation:
what components of blood can be examined
In going down a group in the periodic table, what effect does electron shielding generally have on the effective nuclear
charge acting on the outermost electron in an atom?
Answer: Electron shielding has little effect on the effective nuclear charge because electrons are being added to principal energy levels, not to any inner levels. As the nuclear charge increases across a period, the effective nuclear charge acting on the outermost electrons increases.
Explanation:
Down a group in periodic table, the number of electron in an atom increases. Therefore, the shielding of an electron from the nuclear charge by neighbouring electrons increases which further reduces the ionization energy.
What is ionization energy?Ionization energy is the minimum amount of energy required to remove the loosely bound electron from the valence shell of the atom. From the left to right in a row in periodic table the ionization energy increases and down a group it decreases.
Metals in left side of periodic table are electron rich and easily loss electrons because, the valence electrons in them are loosely bout due to less effective nuclear pulling.
The less the nuclear pulling to the electrons the less electronegative the atom is. The electrons can shield each other from the nuclear attractive pulling. Hence, down a group as the number of electrons increases, this shielding or screening effect also increases results in less nuclear charge to the valence electron.
To find more on ionization energy, refer here:
https://brainly.com/question/28385102
#SPJ2
Please hurry i really need it fast
The answers are here
In which figure does Colin do work?
A. Figure A
B. Figure B
C. Both figures
D. Neither figure
What is the temperature of a gas at STP?
O A. 273 K
O B. 273°C
ОС. ОК
O D. -273°C
Answer:
The temperature of a gas at STP is 273K
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 :)
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%
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:
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.
What is the electron configuration for boron (B)?
Answer:
[He]2s2 2p1.
that is the answer have an amazing day. Remember your an amazing person for who you are.
Based on the scientific sources you found, did you think one person’s points were more scientifically valid than the other’s
Answer:
Yes. The scientific sources disputed several of the fitness instructor’s points. For example, he mentioned that GMO foods cause food allergies, but two credible sources disputed this claim. The lab technician, however, supported her findings with verifiable scientific information.
Explanation: plato
How glycerin is form?
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:
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:
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.
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.
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.
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.
EXTRA POINTS!
Which organism has Ganglia?
A: Sponge
B: fish
C: hydra
D: flatworm
Answer:
flatworm
Explanation:
Answer:
D.) Flatworm
Explanation:
Took the test :)
How many protons are in the nucleus of one atom of neon based on this information found in the Periodic Table?
Answer:
10 protons
Explanation:
The atomic number of an element is equal to the number of protons of the element. The atomic number of neon is 10. Therefore, neon contains 10 protons.
10 protons are in the nucleus of one atom of neon based on this information found in the Periodic Table.
What is periodic table ?The chemical elements are arranged in rows and columns in the periodic table, sometimes referred to as the periodic table of the elements. It is frequently used in physics, chemistry, and other disciplines and is frequently regarded as a symbol of chemistry.
The elements are organized in what is known as the periodic table. Columns and rows are used to organize the table. The horizontal rows are referred to as "periods," while the vertical columns are known as "groups."
Thus, The atomic number of an element is similar to the number of protons of the element. The atomic number of an element neon is 10. So, neon contains 10 protons.
To learn more about the periodic table, follow the link;
https://brainly.com/question/11155928
#SPJ2
What is the empirical formula for N2H6
Answer:
NH4
Explanation:
empirical formula is the ratio of all elements to each other. so
2:6= 1:4
that's why
N1H4 or NH4
True or False: Natural selection doesn't happen anymore.
Please help. It's for chemistry
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.
When the potential difference across a lamp is 3.3V the current is 0.15 calculate the resistance of the lamp and give the unit
Answer:
22Ω
Explanation:
Given parameters:
Potential difference = 3.3V
Current = 0.15A
Unknown:
Resistance = ?
Solution:
According to ohm's law, potential difference, current and resistance are related by the expression below;
V = I R
where V is the voltage
I is the current
R is the resistance
3.3 = 0.15 x R
R = [tex]\frac{3.3}{0.15}[/tex] = 22Ω
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.
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
I NEED HELP!! PLEASE
what is the predicted order of electronegativity values from least to greatest for elements in the second period?
A. li b>n>f
B. c b>n>f
D. there is no way to predict
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!
