Answers
Related Questions
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.
Answers
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.
Help me with physical science
Answers
Answer:ok
Explanation:fish
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
Answers
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
What would happen if our intestines were not coiled (twisted) inside our body?
Answers
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.
what discovery was a minor help in the development of the periodic table?
Answers
Answer:
In 1932 James Chadwick first discovered neutrons, and isotopes were identified
Explanation:
Hi, I need help please :)
Answers
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?
Answers
Answer:
3
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,
Answers
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
learn more about electronic balance here:
brainly.com/question/13206375
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.
The respiration rate of a goldfish is measured. The goldfish is then placed in cold water and the respiration rate is measured again
Answers
Answer:
so the answer are Tyre and he'll to do
Convert -8.0 degrees F to
degrees C.
Answers
Answer:
Its -22.222C
Explanation:
I hope its helpful.
Answer:
-22.222
Explanation:
:)
guys please help i need to pass this!!
Answers
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.
Stars with a greater overall mass are and , and they consume their nuclear fuel .
Answers
Answer:
they will expand
Explanation:
as they bring out they become red giants then eventually white dwarfs or the scarier options a black hole
1. What are they key characteristics scientists look for to figure of it something is real science or pseudoscience?
2. What are the five main steps in the scientific method?
3.What is a physical property?
4. What are the two types of physical properties?
Answers
Answer:
Among these warning signs are: A tendency to invoke ad hoc hypotheses, which can be thought of as “escape hatches” or loopholes, as a means of immunizing claims from falsification. An absence of self-correction and an accompanying intellectual stagnation. An emphasis on confirmation rather than refutation.oMake an observation.Ask a question.Form a hypothesis, or testable explanation.Make a prediction based on the hypothesis.Test the prediction.Iterate: use the results to make new hypotheses or predictions.3. A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance
4.extensive and intensive properties.
PLEASE MARK ME BRAINLIESTWhich of the following is an
example of a homogeneous
mixture?
A. fruit punch
B. a sandwich
C. a toolbox
Answers
Answer:
fruit punch
Explanation:
............
Compound 2 contains 2.0g of hydrogen and 32.0g oxygen. What is the percent compound of each element?
Answers
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]
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 %
Answers
Answer:
False hoge iska answer
Explanation:
Please follow me
A car travels 4 miles in 0.08 hours. The speed of the car is miles/hr.
Answers
I don’t know how to explain it. Sorry :(
A gas has a density of 5.56 g/L. What would the mass in kilograms of 1 m^3 of this gas
Answers
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]
What is the phase change in which
a substance changes from a gas to
liquid?
a
Answers
Answer:
Usually the answer to this kind of question would be Condensation
Explanation:
You feel me my Guy...
Answer:
vaporization
Explanation:
oops i dont think i meant to do this
Answers
step by step: Good luck
How many elements are in “C2H6O”
Answers
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
Why is nucleus of an atom charged is negatively charged?
Answers
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.
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
Answers
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
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
Answers
Answer:
I think it's a flexible
I hope it's helps you
example of electrovalent bond
Answers
Explanation:
MgCl2, CaCl2, MgO, Na2S, CaH2, AlF3, NaH, KH, K2O, KI, RbCl, NaBr, CaH2 etc.hope it helps.stay safe healthy and happy..if an airplane travels a distance of 500km in 5 hours, what id the average speed?
Answers
Answer:
[tex]speed = \frac{distance}{time} \\ = \frac{500}{5} = 100 \frac{km}{hours} \\ thank \: you[/tex]
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
Answers
Answer:
c
Explanation:
because when you crush an ice it would break into peace's and the ice would not be a solid
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.
Answers
Answer:
they’re all pure substances. Carbon dioxide is not an element
Explanation:
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.
Answers
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.
Learn more; https://brainly.com/question/10904296
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
