Answer:
solids
Explanation:
solids aren't very malleable of prone to change shape and/or volume so...
Which of the following is an
example of a homogeneous
mixture?
A. fruit punch
B. a sandwich
C. a toolbox
Answer:
fruit punch
Explanation:
............
When using an electronic device, such as an electronic balance, the measurement displayed on the screen is assumed to have one estimated digit included. in fact, you'll often sec the estimated digit changing rapidly, because there is fluctuation in the estimate. Explain why it is important to record the zero in the measurement shown to this right,
The zero calibration of the electronic balance allows to maintain the precision of one digit.
Electronic measurement equipment has a mechanism to set the zero of the measurement every time the equipment is turned on, this procedure must be carried out to eliminate:
Possible existence of some material on the plateChanges in the characteristics of the balance completes due to agingCchanges in ambient conditions, for example temperatureChanges in the mass of the plate due to deformation or breakage.
The methods of regurgitating the zero of the balance consists of measuring the weight without masses and bringing this value to zero, in general by changing some adjustable parameter of the balance, for example magnetic field current, reference level with a beam of light.
With this calibration it will be achieved that there is always a precision digit in the readings.
With Electronic Balance Calibration it is possible to have a pressure digit
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Answer:
The zero is the estimated digit.
Explanation:
If the zero was left off of the measurement, people would assume the tenths place was the estimated digit.
Need help please
Which of the following physical changes shows a change in a substance’s state of matter?
A. A piece of paper being torn in half
B. Clay being molded into a bowl
C. An ice cube being crushed
D. Liquid water becoming steam
Answer:
c
Explanation:
because when you crush an ice it would break into peace's and the ice would not be a solid
Stars with a greater overall mass are and , and they consume their nuclear fuel .
Answer:
they will expand
Explanation:
as they bring out they become red giants then eventually white dwarfs or the scarier options a black hole
if an airplane travels a distance of 500km in 5 hours, what id the average speed?
Answer:
[tex]speed = \frac{distance}{time} \\ = \frac{500}{5} = 100 \frac{km}{hours} \\ thank \: you[/tex]
Help me with physical science
Answer:ok
Explanation:fish
A gas has a density of 5.56 g/L. What would the mass in kilograms of 1 m^3 of this gas
Answer:
Mass is 5560 grams
Explanation:
[tex]{ \boxed{mass = density \times volume}}[/tex]
Density is 5.56 g/L
Volume is 1 m³ = 1,000 L
Substitute the following to get mass:
[tex]mass = (5.56 \times 1000) \\ { \boxed{ \boxed{mass = 5560 \: grams}}}[/tex]
The respiration rate of a goldfish is measured. The goldfish is then placed in cold water and the respiration rate is measured again
Answer:
so the answer are Tyre and he'll to do
Which of the following correctly describes a compound? (4 points) a The atoms are bonded together, and the compound has different physical and chemical properties than the individual elements. b The atoms have no set ratio for how the atoms can combine, and they are not chemically bonded together. c The atoms can only combine in fixed ratios, and they retain their individual chemical and physical properties. d The atoms retain their individual chemical properties, and they can only be separated from each other by a chemical change.
Answer: A
Explanation: A compound is defined as two or more different elements bonded together in an ionic or covalent bonding arrangement. Any individual compound has a fixed ratio of it's elements. The elements do not retain their individual chemical properties.
The observed mass of the sun is 6.270 * 10 ^ 26 g but the actual mass of sun is 5.97*10^ 24 kg . The percent error in measurement is 4,78 %
Answer:
False hoge iska answer
Explanation:
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In a synthesis reaction, two atoms of sodium (Na) combine with one molecule of chlorine gas (Cl2) to produce sodium chloride (NaCl). How many molecules of sodium chloride are produced?(1 point)
four
two
one
three
Answer: 2
Explanation: I DID DA TEST
A synthesis reaction is a chemical reaction in which two different atoms interact together to produce a different molecule or compound.
Sodium is an alkali metal with the atomic number 11. It has a +1 valence electron in its outermost shell.
Chlorine is a halogen family element with the atomic element 17. It requires an electron to complete its octet structure.
That is why the bonding reaction between them is called Electrovalent or Ionic bonding.
When 2 moles of Sodium (Na) combines with 1 mole of Chlorine (Cl), we have:
[tex]\mathbf{2 Na_{(s)} + Cl_2_{(g)} \ \to \ 2NaCl_{(s)} }[/tex]
Therefore, from the above reaction, we can conclude that there are two molecules of sodium produced when two atoms of sodium (Na) combine with one molecule of chlorine gas (Cl2).
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guys please help i need to pass this!!
Answer:
Towards the center of the earth.
Explanation:
That is the gravitational pull for us on earth like we are pulled to the center of earth not the atmosphere high up in the sky hope this helps? I know you can pass this! You got it the fact that you got that far is proof.
How many elements are in “C2H6O”
Answer:
Ethanol's chemical formula is C2H6O. This chemical formula can also be written as CH3CH2OH or C2H5OH. It is made of nine atoms that include two carbon (C) atoms, six hydrogen (H) atoms, and one oxygen (O) atom.
Explanation:
Answer:
three elements. carbon hydrogen and oxygen
Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide.
Which statement best describes these three components of air?
Oxygen, nitrogen, and carbon dioxide are all classified as pure substances.
Oxygen, nitrogen, and carbon dioxide cannot react with another substance.
Oxygen, nitrogen, and carbon dioxide are chemically bonded to one another.
Oxygen, nitrogen, and carbon dioxide can be classified as elements.
Answer:
they’re all pure substances. Carbon dioxide is not an element
Explanation:
The properties of graphene are all of the following except this _______________.
a
high electrical conductivity
b
flexible
c
one layer of atoms thick
d
highly reactive
Answer:
I think it's a flexible
I hope it's helps you
Convert -8.0 degrees F to
degrees C.
Answer:
Its -22.222C
Explanation:
I hope its helpful.
Answer:
-22.222
Explanation:
:)
Hi, I need help please :)
A car travels 4 miles in 0.08 hours. The speed of the car is miles/hr.
Why is nucleus of an atom charged is negatively charged?
Answer:
Charge is caused by a flow of electrons, since electrons are around the nucleus they can be lost or gained by atoms. When an atom gets charged, it gains a charge, that is, it gains an electron. Since electrons are negatively charged, when an atom gains one, it also becomes negatively charged.
A 147g piece of metal has a density of 7.00g/mL. A 50mL graduated cylinder contains 20.0mL of water. What is the final volume after the metal is added to the graduated cylinder
Answer: 41.0 ml
Explanation: (147g/7.00g/ml) = 21.0 ml for the metal
Add to 20.0ml to reach 41.0 ml to 3 sig figs
Water is an important molecule for life on Earth to exist. Water is known to have unique properties like high heat of vaporization that helps moderate the temperature of the ecosystem. It also has high surface tension and high boiling point. In relation to our topic, what do you think is behind the molecules of water that makes these properties possible? Explain and support your answer.
Hydrogen bonding in water molecules are responsible for the unique properties of water.
Water is a molecule composed of hydrogen and oxygen atoms. Oxygen is highly electronegative. This leads to the introduction of polarity in the O-H bond in water. Hydrogen bonding occurs in a molecule when hydrogen is bonded to highly electronegative atom.
As a result of this polarity and consequent hydrogen bonding due to the hydrogen - oxygen bond, water molecules have several unique properties such as high heat of vaporization, high surface tension and high boiling point.
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Compound 2 contains 2.0g of hydrogen and 32.0g oxygen. What is the percent compound of each element?
Note down the formula below
[tex]\boxed{\sf Mass\%\;of\; element=\dfrac{Mass\:of\:the\: element}{Mass\;of\:the\: compound}\times 100}[/tex]
Mass of the compound
[tex]\\ \sf\longmapsto 32+2=34g[/tex]
Mass % of Hydrogen:-
[tex]\\ \sf\longmapsto \dfrac{2}{34}\times 100[/tex]
[tex]\\ \sf\longmapsto \dfrac{1}{17}\times 100[/tex]
[tex]\\ \sf\longmapsto 5.8\%[/tex]
Mass % of Oxygen:-
[tex]\\ \sf\longmapsto \dfrac{32}{34}\times 100[/tex]
[tex]\\ \sf\longmapsto \dfrac{16}{17}\times 100[/tex]
[tex]\\ \sf\longmapsto 94.2\%[/tex]
example of electrovalent bond
Explanation:
MgCl2, CaCl2, MgO, Na2S, CaH2, AlF3, NaH, KH, K2O, KI, RbCl, NaBr, CaH2 etc.hope it helps.stay safe healthy and happy..Que significa HI en educación ambiental
Answer:
Um... Hello in environmental education. i think that what u said :)
Explanation:
Methane gas that comes out of a bunsen burner contains what type of energy?
A. Light energy
B. Heat/thermal energy
C. Chemical potential energy
D. Electrical energy
what discovery was a minor help in the development of the periodic table?
Answer:
In 1932 James Chadwick first discovered neutrons, and isotopes were identified
Explanation:
Which best describes this compound
Answer:
There is nothing to see
Explanation:
You didnt add the image
Why is it impossible for an element to have an atomic number of 110.5?
a. atoms of an element have the same whole number of protons and neutrons
b. atoms of an element all have the same whole number of protons
c. exactly half of the isotopes would need an atomic number of 110 and half would need an atomic number of 111 which is very unlikely
d. atoms with atomic numbers greater than 100 are unstable
Answer: B
Explanation: The atomic number is based only on the number of protons in the nucleus of an atom. Since this is a count of whole numbers, it cannot be a decimal. It's either element 110 or 111, not 110.5.
Answer:
B
A
C
A
C
These should be the answers for your test. If you have any questions, please DM me
What would happen if our intestines were not coiled (twisted) inside our body?
Answer:
If there is a change in the natural shape of the intestines, this can be known as a twisted bowel. A twist in the small intestine is referred to as a volvulus. Twists in the large intestine are known as a colonic volvulus. These abnormal twists or loops can cause an obstruction or other medical conditions which could be fatal. If signs of twisting bowel present, it is important to seek medical attention as quickly as possible.
You decide to clean the bathroom. You notice that the shower is covered in a strange green slime. You decide to try to get rid of this slime by adding lemonade juice. You spray half of the shower with lemonade juice and spray the other half of the shower with water. After 3 days of spraying equal amounts 3 times a day, there is no change in the appearance of the green slime on either side of the shower. How many trials are being performed in this example?
Answer:
3
Explanation:
