NEED HELP Please Will Choose Brainlest
Kinetic molecular theory is often used to describe conductors because as the ________ increase the thermal conductivity of the material increases.
atoms
collisions
weight
Answer:
B
Explanation:
Collisions
Answer:
Collisions
Explanation:
The questions talking about molecules so particles are moving around. Hope this helps
N2O difference in electronegativity
A) A metal ruler has a
mass of 42g and a
volume of 10cm". What
is the density?
Answer:
4.2g/cm^3
Explanation:
Density is a measurement of the amount of mass of a substance can fit into a space. In order to find density you can always use the formula mass/volume (often abbreviated as m/v). In this case that would be 42/10 g/cm^3 or 4.2g/cm^3
Help me plz asap
42,52,55,56,57
Answer:
42) 76
b)70
Explanation:
52) because you don't want to confuse different units. one ex)1cm is 1/ 100 of a meter
55) 1 km=1,000 meters
b) 10 decimterers = 1 meter
56)The SI standard for length is the meter the standard for volume is the cubic decimeter
ex) 1cm³=1mL
57) The two scales are the same. but there are no negative temperatures in Kelvin. 0 Kelvin is the lowest temperature possible.
0 Kelvin= -274.5 Celsius
Measuring Physical Properties Lab Report Instructions: In the Physical Properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in Tiny World. Record your observations and test measurements in the lab report below. You will submit your completed report. Name and Title: , instructor's name, Sep 9th, measuring physical properties lab report. Hypothesis: In this section, include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment. If we use Aluminum to build the roof of the house, then the temperature inside the house will remain cooler. If we use Clay brick to build the walls and floors of the house, then the temperature inside the house will remain cooler. If we use copper to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate. If we use Iron to construct the latches on the windows and doors, then the magnetism will keep the latches secure. Procedure: The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using the summary questions, clearly define the dependent and independent variables of the experiment. Independent V- The type of material tested. dependent V- The results of each test completed Objective(s): In your own words, what was the purpose of this lab? Conclusion: Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words. 1. Using two to three sentences, summarize what you investigated and observed in this lab. 2. What building material did you use to build your house? Did your results support or fail to support your hypotheses? 3. What were the densities of the materials you chose for the walls and floor for the home in Tiny World? Why do you think a building material's density is important when building homes or architectural structures? 4. Why wouldn’t you choose wood or aluminum for the latches on your house? 5. Which material has the highest thermal conductivity? Which material has the highest electrical conductivity? Explain why thermal and electrical conductivity is so high with this material. 6. Think about where you live now or where you have lived in the past; use complete sentences to describe this environment and the weather. What building materials do you believe would work well to build a home in that area? Explain why you chose these materials. P.S. Answer objections and conclusion.
Answer:
Explanation:
Data:
Record the results of each of your physical property tests in the table below.
Wood Clay Brick Iron Aluminum Copper Nickel
Flexibility
(?/10) 3/10 2/10 4/10 7/10 6/10 5/10
Magnetism
(number of paper clips) 0 1 10 0 0 7
Thermal Conductivity
(W/(m·K)) 0.12 0.6 80 235 400 91
Electrical Conductivity
(x107 S/m) 0 S/m 0 S/m (1 x107 S/m) (3.8 x107 S/m) (5.9 x107 S/m) ( 1.4x107 S/m)
Density
(g/cm3) 0.75 0.51 0.33 0.45 0.315 0.318
Which term describes the maintenance of a steady internal state in the body?
73.
A gametogenesis
B. homeostasis
C. mitosis
D. respiration
What is the enthalpy of reaction for the decomposition of calcium carbonate?
1. Ba(OH)2
What is the compound
Answer:
BARIUM HYDROXIDE IS THE COMPOUND
How did the scientific method change the way scientists worked beginning in
the 16th century?
A. It required them to challenge the Catholic Church by denying the
existence of God.
B. It stopped them from stealing credit for others' work by banning
repeatable studies.
C. It allowed them to escape the grip of political leaders by creating
new universities.
O D. It encouraged them to rely on observation and experimentation to
support their conclusions.
Answer: D
Explanation:
apex
Which best describes thermal energy?
A.It is the difference between internal energies of two or more substances.
B.It is the sum of internal energies of two or more substances.
C.It is the portion of internal energy that can be transferred from one substance to another.
D.It is the portion of potential energy that can be transferred from one substance to another.
Answer:
Here is ur answer mate
The sum of internal energies of two or more substance.Hope it helps u mate
HELPPPP
Which of the following statements is true?
Plasma can be found in lightning and comet tails.
Liquid molecules also have a strong attraction to one another.
Bose-Einstein condensates form at absolute zero.
All of the above.
Answer:
Plasma can be found in lightning and comet tails
Explanation:
hope i helped! [i got this correct in a test,hope you get it correct]
Hey, can someone help me? I haven't been getting answers to my q's lately, and somehow my questions keep getting deleted. This is simple and worth 13 points. If water has a density of 19.3g/ml. Will gold float or sink in water?
Answer:
I haven't been getting answers either, so you're not alone. I am pretty sure it doesn't sink or float.
Explanation:
Gold has the same density as water, so it is neutrally buoyant. Hope this helps a bit!
An element has this information:
15 protons, 13 neutrons, 14 electrons
What is the name of this element?
Answer:
hydrogen
Explanation:
The volume of a coke cup is 600 mL. What is it’s volume in cubic centimeters ?
Answer:
600 cm^3
Explanation:
The volume of a coke cup is 600 ml. So the volume in cubic centimeter is 600 cm^3
What is volume?Volume is defined as measure of 3 dimensional space occupied by a matter, substance or enclosed by a surface.
Volume is measured in cubic unit.
Cubic centimeter is commonly used as the SI unit of volume.
One cubic centimeter correspond to the volume is equal to one millimeter.
Cubic centimeter is used to measure the volume of small things.
As
1 cm^3 = 1 cm
1cm^3 = 1ml
So
600 cm^3 = 600 ml
Thus, volume of a coke cup is 600 ml. So the volume in cubic centimeter is 600 cm^3
To learn more about volume, refer to the below link:
https://brainly.com/question/1578538
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What is the shape of pure carbon fullerenes?
A. Hollow tube
B. Hollow Sphere
C. Flat layers
D. Hard, solid crystal
Answer:
The correct answer is Hollow Sphere.
help I have to do this before the end of the day!
Answer:
What the
Explanation: fawk
A scientist wants to determine how temperature affects photosynthesis? He sets up a controlled experiment in which he places small plants acquired from an aquarium store into 3 separate test tubes. He pours 20 ml of cold water into one test tube, 20 mL of room temperature water into the second test tube, and 20 mL of warm water into the third test tube. He covers each test tube with a small latex balloon and measures the circumference of each balloon after 2 days. What is the test (independent0 variable?
Answer:
Independent variable: DIFFERENT TEMPERATURE
Explanation:
The independent variable of an experiment is the variable that the experimenter changes or manipulates in order to effect an outcome or response in the measured variable/dependent variable.
In this experiment, a scientist wants to determine how temperature affects photosynthesis. He sets up the experiment by adding 20ml of water at different temperatures to three test tubes. Hence, the independent or experimental variable is the DIFFERENT TEMPERATURES GIVEN TO EACH PLANTS IN THE TEST TUBE because it is what the experimenter changes in order to effect a measurable outcome i.e. oxygen released in each balloon as a result of photosynthesis, which is the dependent variable
Thus the above response is right.
Learn more about test variable here:
https://brainly.com/question/1542597
What type of chemical bond is present in the CI2 molecule?
What gas is measured in an ICE CORE and what is the correlation between that gas and temperature?
Answer:
Explanation By looking at past concentrations of greenhouse gasses in layers in ice cores, scientists can calculate how modern amounts of carbon dioxide and methane compare to those of the past, and, essentially, compare past concentrations of greenhouse gasses to temperature. Ice coring has been around since the 1950s.n:
Answer:
oh what the guys said above me
no copying from google
what is a penumbra solar eclipse?
Answer:
Hi there!
Your answer is:
In a solar eclipse, we see two types of shadows. One is the "umbra" or the darkest shadow caused by the sun. It's located in the center.
The "penumbra" in a solar eclipse is the shadow that's lighter and located on the sides of the earth. Think about it like this:
The sun and earth are in line. The darkest shadow will continue in that line. That is the umbra. The penumbra continues directly on the outside of the umbra. It's lighter that the other shadow!
A penumbra solar eclipse is when the sun, moon, and earth DONT align properly. This causes a partial eclipse, not a full eclipse. A penumbra solar eclipse is a Partial solar eclipse.
Hope this helps! To be clear, none of this is copied. This is based off of my previous knowledge on the subject and interest in phenomena such as these!
what determines the velocity of an object
Answer:
the direction of the object
Explanation:
simple question ill name u brainiest
Answer:
Test tube :)
Explanation:
Im pretty shure its D- graduated cylendar
A flask holds much more than that a test tube doesnt have mesure meants (i dont tink so at least?) and a beaker also much more and is harder to explain..
How many significant figures are in the number 20300?
Answer:
There are three significant figures in the number 20300
3. A copper sulfate hydrate is taken in a crucible and heated until completely dry.
Mass of the crucible: 26,30g
Mass of the crucible + hydrate compound: 27.35 g
Mass of the crucible + compound (after 1" heating): 27.03 g
Mass of the crucible + compound (after 2nd heating): 26,98 g
Mass of the crucible + compound (after 3d heating): 26.97 g
Answer the following questions based on the above data. Show work.
(1) What is the mass of the anhydrous (fully dry) Cu(SO4)2?
How many moles of anhydrous Cu(SO4)2 is this?
(ii)
What is the mass of water (liberated during drying)?
How many moles of water is this?
(111)
What is the simplest molar ratio between anhydrous Cu(SO4)2 and H2O?
(iv)
What is the formula for the hydrate of copper sulfate?
1310: Experiment 3 - Study of Hydrates
36
Answer:
i) mass of the anhydrous CuSO₄ = 0.67 g;
Number of moles of anhydrous CuSO₄ present = 0.004 moles
ii) mass of water liberated = 0.38 g;
Number of moles of water liberated = 0.02 moles
iii) simplest mole ratio = 0.02 / 0.004 = 5 : 1
iv) Formula of the hydrate of copper sulfate = CuSO₄.5H₂O
Explanation:
Molar mass of CuSO₄ = 159.6 g/mol
i) mass of the anhydrous CuSO₄ = (mass of crucible + compound after 3rd heating) - mass of crucible
= 26.97 g - 26.30 g = 0.67 g
Number of moles of anhydrous CuSO₄ present = mass/molar mass
= 0.67 g / 159.6 g/mol = 0.004 moles
ii) mass of water liberated = (Mass of the crucible + hydrate compound) - (mass of crucible + compound after 3rd heating)
mass of water liberated = 27.35 g - 26.97 g = 0.38 g
Number of moles of water liberated = mass/molar mas
Number of moles of water liberated = 0.38 g/ 18.0 g/mol = 0.02 moles
iii) simplest mole ratio = 0.02 / 0.004 = 5 : 1
iv) Formula of the hydrate of copper sulfate = CuSO₄.5H₂O
Elements in which two groups are considered highly reactive?
a.1 & 18(8A)
b.2 & 14 (4A)
c.3-12
d.1 & 17(7A)
Answer:
option d is correct
Explanation:
element of group 1A and 7A(halogens) are highly reactive
Starch is a type of: Protein Fat Nucleic acid Sugar
Answer:
it's not a protien at all
Explanation:
Starch is not a protein. Starch is a type of carbohydrate. It is a polysaccharide, it has lots of sugars though
How does the Scientific Theory of Atoms help us undersand atoms?
Answer:
Atomic theory is the scientific theory that matter is composed of particles called atoms. ... According to this idea, if one were to take a lump of matter and cut it into ever smaller pieces, one would reach a point where the pieces could not be further cut into anything smaller.
Explanation: hope this helps
The table shows five items that a person may consider including in a safety contract.
Item number Item
1 Label all containers.
2 Tie long hair back.
3 Bring a cell phone to the lab in case of emergency.
4 Bring a small laptop computer to the lab to use MSDS online.
5 Wear safety goggles at all times.
Which three of the five items would be best to include in a safety contract?
1, 2, and 3
1, 2, and 5
2, 3, and 4
3, 4, and 5
Answer:
1,2, and 5
Explanation:
The items that should include in a safety contract are:
1 Label all containers.2 Tie long hair back.5 Wear safety goggles at all times.Who has to entire a technology safety settlement?One copy must be signed by means of both you and a determined mum or dad before you may participate inside the laboratory. the second reproduction is to be stored in your technology pocketbook as a regular reminder of the safety guidelines. 1. conduct yourself in an accountable man- ner at all times inside the laboratory.
Which is accurate lab protection?Avoid direct contact with any chemical. in no way odor, inhale, or flavor laboratory chemical compounds. always wash palms and fingers with soap and water after eliminating gloves and earlier than leaving the painting's place. never eat, drink, bite gum or tobacco, smoke, or apply cosmetics in the laboratory.
Learn more about safety here: brainly.com/question/9380087
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How many Magnesium are in 10MgCI2
Answer:
10 Mg
Explanation:
We are given the compounds MgCl₂.
For every one mole of Magnesium Chloride, there are 1 atom of Mg and 2 atoms of Cl₂.
So if we have 10 moles of MgCl₂, we will have 10 Mg.
Fractional distillation is used to seperate mixture of water and ethanol. The temperature of the top of the fractioning column is lower than the temperature of the bottom. The more ..... liquid evaporates and moves further up the column. It eventually reaches the .... where the .... changes to a liquid
- Condenser
- Higher
- Crystallisation
- Solid
- Volatile
- Flask heavy
- Vapour
Answer:
condenser higher uuuu
