what are some physical propeties of copper?
Put appropriate exact correct answers due in 10 mins
*please note that if you put incorrect and inappropriate answers I won't mark as braninlist I will report answer*
Answer:
Explanation: Reddidh colour
bright metallic luster
malleable and ductile
good conductor of heat
Answer:
Copper has a melting point of 1083.4 +/- 0.2°C, boiling point of 2567°C, specific gravity of 8.96 (20°C), with a valence of 1 or 2.
Copper is reddish colored and takes a bright metallic luster.
It is malleable, ductile, and a good conductor of electricity and heat
How many atoms do you count?
Answer:
44
Explanation:
product testing claims are called?
Explanation:
They are called consumer testing or comparative testing, is a process of measuring the properties or performance of products. ... Product testing might be accomplished by a manufacturer, an independent laboratory, a government agency, etc. Often an existing formal test method is used as a basis for testing
hope this helps
Answer:
Product testing claims are called Consumer Testing .
. SE7.12D Which of the following statements accurately represents the differences in
plant and animal cells?
Only plant cells have a cell wall, chloroplasts, and a large vacuole.
Only animal cells have a cell wall, chloroplasts, and a large vacuole.
Only plant cells have a cell membrane, mitochondria, and cytoplasm.
Only animal cells have a cell membrane, mitochondria, and
cytoplasm.
CLEAR ALL
Only plant cells have a cell wall, chloroplasts, and a large vacuole.
I hope this helped :)
Features which are found in plant cells only are the chloroplast, large vacuole and cell wall.
Plants and animal cells consists of the following parts ; Mitochondria, cell membrane, vacuole, cytoplasm and so on. The vacuole present in animal cells are much smaller than those found in plant Cells. Hence, vacuole in animal cells are called small vacuole Plant cells also consists of cell wall, chloroplast and a large vacuole. All these are missing in animal cells.Therefore, Only plant cells have "a cell wall, chloroplasts and a large vacuole."
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A 5.32 g mixture contains both lithium fluoride, LiF, and potassium fluoride, KF. If the mixture contains 3.12 g fluorine, what is the mass of the KF in the mixture?
Answer:
Explanation:
entire mixture = 5.32g
F = 3.12g --> 3.12g*(1mol/18.998g) = 0.1642mols F
Since LiF has 1mol Li to 1 mol F,
0.1642mols F* (1mol Li/1 mol F) = 0.1642mols Li
Convert into grams:
0.1642mols Li * (6.94g/1mol) =1.1397g Li
So add the masses of Li and F together:
3.12g F + 1.1397g Li = 4.2597g LiF
5.32g - 4.2597g LiF = 1.06g KF
-----
Basically what we did is convert the given mass of F to mols and since we know that there is a 1:1 mole ratio of F to L, the number of mols of F is the number of mols of Li. Change the mols of Li to grams and then add the mass of Li with given mass of F. You now have the mass of LiF. To find mass of KF, subtract mass of LiF from mass of entire mixture.
What is the unit of measure for energy? watt newtons joules meters per second
Answer:
c. Joules
Explanation:
I went over this already
Based on scientific information and records, the unit of measurement for energy is called: C. Joules.
What is energy?Energy can be defined as the ability of an object or body to do work. Thus, energy must be possessed or transferred to an object or physical body before it can be used in doing a work such as heating a system.
In Science, Joules is the standard unit of measurement for energy while Newton is the unit of measurement for force. Also, Watt is the unit of measurement for power and meters per seconds is a unit for measuring the velocity (speed) of an object.
Read more on energy here: https://brainly.com/question/1242059
is the capacity to do work or to produce heat.
Answer:
Energy is the ability to do work or to produce heat.
what is a mass number
Answer:
What is an mass number?
Mass number is an integer (whole number) equal to the sum of the number of protons and neutrons of an atomic nucleus. In other words, it is the sum of the number of nucleons in an atom. Mass number is often denoted using a capital letter A. Contrast this with the atomic number, which is simply the number of protons.
Explanation:
Which sentences describe alpha particles?
1. Alpha particles consist of two protons and two neutrons.
2. Alpha particles consist of a negatively charged electron emitted by a nucleus.
3. Alpha particles are produced during alpha decay.
4. Alpha particles are produced during beta decay.
5. Alpha particles release energy.
Answer:
1. Alpha particles consist of two protons and two neutrons.
Explanation:
Alpha particles are generally produced in the process of alpha decay, a radio active decay in which an atom loses an helium atom.
AN alpha particle is identical to the helium particle. The helium particle has mass number of 4 and atomic number of 2. This means;
Number of protons = 2
Number of neutrons = Mass Number - Atomic Number = 2
The correct option is option 1.
Answer:
Correct Answers
1
3
5
Explanation:
which liquid is least dense and more dense between: water. oil. gasoline, seawater, and syrup
Answer:
most dense is syrup least dense is gasoline.
If an atom has 3 protons in its nucleus, how many electrons must it have
Answer:
3
Explanation:
REMEMBER :Protons and electrons are always the same.
Hope this is correct and helpful
HAVE A GOOD DAY!
During World War One, observation balloons were used in order to spy out enemy positions. An observation
balloon was filled with 0.50 atmospheres of Helium, 54.0 mm Hg of Nitrogen, and 0.400 atmospheres of
Hydrogen. What pressure in atmospheres was the balloon filled to?
Answer:
0.971
Explanation:
The pressure (P) in atmospheres (atm) the balloon was filled to will be
P = P1 +P2 + P3
where P1 is the pressure in atm of Helium (0.5 atm)
P2 is the pressure in atm of Nitrogen (X atm)
P3 is the pressure in atm of Hydrogen (0.4 atm)
The value of P2 provided in the question is in mmHg
To convert we have
1 atm = 760 mmHg
X atm = 54 mmHg
X = 54 × 1/760
X = 0.071 atm
Hence, P2 = 0.071 atm
Thus, from the formula earlier
P = 0.5 + 0.071 + 0.4
P = 0.971 atm
Which element has similar chemical properties compared to Carbon (C)?
Answer:
silicon (S)
Explanation:
Which nonmetals have similar chemical properties? Check all that apply. sulfur nitrogen selenium oxygen carbon fluorine
Answer:
Sulfur, Selenium, Oxygen.
Explanation:
In the periodic table, all the elements that are arranged in a group or vertical column have similar properties as well as similar valance electrons. Therefore, the elements sulfur, selenium, and oxygen can be seen in group 16 of the periodic table. Here, the atomic number of oxygen is 8, the atomic number of selenium is 34, and the atomic number of sulfur is 16.
Answer:
Check the following boxes:
Sulfur
Selenium
Oxygen
Explanation: All these nonmetals all have similar chemical properties.
find the density of an object that has a mass of 6.13 g and volume of 1.50 cm³.
≈ 4.10 g/cm³
Explanation:Hi there !
Density formula
d = m/V
d = 6.13g/1.5cm³
d = 4.08(6) g/cm³ ≈ 4.10 g/cm³
Good luck !
Write the electron configuration for an atom that has 17 electrons.
Which measurements shows the correct degree of the precision for this ruler?
Answer:
The answer is "13.25 cm"
Explanation:
When the lengths of being in an entity were also documented by either a cm-length ruler in 2 decimal positions. These measurements showed the decimal point, 13.25 cm possess 2 decimal roles, and 0 decimal places that is equal to 130 or 132 cm. It is the right choice is therefore 13.25 cm, because it takes two decimals and this is more accurate.
Answer:1.5 cm
Explanation:edge2020
Which branch of chemistry studies substances containing carbon?
(3 puntos)
organic
theoretical
analytical
physical
inorganic
biochemistry
Explanation:
Organic........you cholo
A scientific theory can never be disproven.
Please select the best answer from the choices provided
OT
OF
The statement 'a scientific theory can never be disproven' is FALSE. It depends on the emergence of new lines of evidence.
Scientific theoryA scientific theory is a given explanation of some aspect of the natural world, which is sustained by much evidence obtained using the scientific method.
In a scientific theory, the evidence was tested in repeated situations and consequently confirmed.
However, scientific theories can be refuted (rejected) in the light of new lines of evidence.
Learn more about scientific theories here:
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Answer:
The statement 'a scientific theory can never be disproven' is FALSE. It depends on the emergence of new lines of evidence.
The rate of geologic processes can happen quickly or take a long time.
Answer:
Take a long time
Explanation:
Geology is defined as a science mostly concerned with the study of the history of the earth as recorded in different rocks formations.
Geologic processes are events that occur on a geological timescale which may span across many centuries.
The four major geologic process are known to include; impact cratering, volcanism, tectonics, and erosion.
Answer:
true
Explanation:
47.0 mL of an HBr solution were titrated with 37.5 mL of a 0.215 M LiOH solution to reach the equivalence point. What is the molarity of the HBr solution?
Answer:
0.172 M
Explanation:
M1V1=M2V2
(x)(47.0mL) = (37.5mL)(0.215M) solve for X
Answer: 0.172
Explanation:
which describes an atom with an atomic number of nine
Answer:
Fluorine
Explanation:
fluorine is the element in question, as its atomic number is 9
Choose all answers that apply
PLZ HELP ASAP i am doing a test and i need help. I WILL BE DOING BRAINLIEST TO THE FIRST PERSON WHO REPLYS
When dynamite explodes, it releases a large amount of light and heat. This is an example of _____.
slow combustion
rapid combustion
an exothermic reaction
an endothermic reaction
a chemical change
a physical change
Answer
Rapid Combustion
Explanation:
An explosion is a combustion and a quick reaction, That makes it rapid
I saw someone do this but someone answered it with the wrong answer so please help me!!
Shemika is preparing for her birthday party. She made a punch by mixing pineapple juice, orange juice, and seltzer water in a pitcher. She made fruit salad by putting blueberries, apple chunks, and mango
chunks in a bowl. Which of the following is true about her snacks?
Both snacks are homogeneous mixtures
The punch is a heterogeneous mixture and the fruit salad is a homogeneous mixture.
The punch is a homogeneous mixture and the fruit salad is a heterogeneous mixture.
The punch is a solution and the fruit salad is a homogeneous mixture.
Answer:
C. the punch is a homogeneous mixture and the fruit salad is a heterogeneous mixture
Explanation: The punch is made from many juices meaning you could not physically separate it while you can do that with the fruit salad because it is chunks of fruit
I really need to understand this
Describe the pattern observed in volume measurements as different masses or volumes of the unknown solid or liquid were selected. Explain why this pattern exists.
Answer:
Throughout the expansion segment below, the definition including its instance specified is defined.
Explanation:
Volume is the sum of space filled by measurement of material throughout 3 directions. The volume of either a compound is mainly determined by the amount and the process including its molecules.The larger the volume as well as strength including its solid as well as liquid, the greater the total weight.That's because the combined volume or total weight is supposed to have been significantly greater. After all, there is so much mass.
Why is the Earth's hydrosphere (oceans) made up of mostly hydrogen
and oxygen? *
Answer:
Because ocean water contains salt, there is also sodium and chlorine in the oceans.
Explanation:
How does an area’s climate determined
Answer:
The simplest way to describe climate is to look at average temperature and precipitation over time. Other useful elements for describing climate include the type and the timing of precipitation, amount of sunshine, average wind speeds and directions, number of days above freezing, weather extremes, and local geography.
Explanation:
hope it helps
A test tube can be used to hold
A
more concentrated solutions than a beaker holds.
B
larger amounts of chemicals than a beaker holds.
с
smaller amounts of chemicals than a beaker holds.
D
less dangerous substances than a beaker holds.
3
Calcium oxide is made from the thermal decomposition of calcium carbonate: CaCO3 CAO + CO2
a) Calculate the maximum mass of calcium oxide that could be formed from heating 500 g of calcium
carbonate.
Answer:
Explanation:
n CaCO3 = mass / m.wt
= 500 /( 40 + 12 + 16x 3)
= 5 mole
n CaO = 5 moles ( from the balanced equation we have 1:1 moles )
mass of CaO = nCaO X m.wt
5 x( 40 +16 )
= 280 grams
