Answer:
I honestly think is hair length
help me with example 2 please
Answer:
you need to calculate it by percentage
Answer:
mass = 20g
volume = 80ml =0.08 dm³
[tex]p = \frac{mass}{volume} [/tex]
[tex]p = \frac{20g}{0.08 \:dm ^{3} } \\ p = 250gdm {}^{ - 3} [/tex]
Please help it’s due today. I will give brainliest.
Answer:
both conserve mass
Explanation:
Answer:
B.both conserve mass.
which factor affects an objects weight but not its mass?
A. Volume
B.Magnetism
C. Gravity
D Conductivity
Answer:
Gravity
Explanation:
Gravity is the pull of an object to another object like a human to the Earth. This is weight.
Answer:
C. Gravity
Explanation:
Just Took The Test And Got A Perfect Score. ;)
What is the wavelength, in meters, of yellow light with a frequency of 5.10 x 1014 Hz?
Answer:
5.88 × 10⁻⁷ m
Explanation:
Speed of Light = Wavelength times Frequency
c = λν
Step 1: Define
c = 3.0 × 10⁸ m/s
ν = 5.10 × 10¹⁴ Hz
λ = unknown
Step 2: Solve for λ
3.0 × 10⁸ m/s = 5.10 × 10¹⁴ Hz · λ
λ = 5.88235 × 10⁻⁷ m
Step 3: Simplify
We are given 3 sig figs.
5.88235 × 10⁻⁷ m ≈ 5.88 × 10⁻⁷ m
to get dry ice to the triple point
PLEASE HELP !!
What word is used to describe the electrodes used in electrolysis that do not react?
Answer:
Electrodes are the rods that carry the electric current to and from the electrolyte. These rods are usually inert, as in they do not react- usually graphite or platinum. The positive electrode is called the anode and the negative electrode is called the cathode.
Explanation:
plz mark me as brainiest
Electrodes in electrolysis that do not react are called inert electrodes.
Electrodes are conductors which carry current in and out of the electrolyte.
The negative electrode is the anode and the positive electrode is the cathode.
Inert electrodes do not react.
Electrodes in electrolysis that do not react are called inert electrodes.
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a man is 72 inches tall, what is his height in meters? round to three significant figures.
Answer:
1.829 meters is the answer
Explanation:
Look at the map of temperature versus latitude
globe. Why are the bands not straight
around
the
across!
The bands not straight around since location is not a factor in measuring temperature. Temperature seems to be not the same as the power of a thermodynamic process.
What is temperature?Temperature is a unit used to describe hotness or coldness. It may be stated in terms of any number of arbitrary scales and shows the direction in which heat energy would naturally flow, i.e., from a hotter body to a region of lower temperature (one at a lower temperature).
Temperature seems to be not the same as the power of a thermodynamic process; for instance, an iceberg has a significantly larger total heat energy than a match, despite the fact that a match is burning at a substantially higher temperature. The bands not straight around since location is not a factor in measuring temperature.
Therefore, the bands not straight around since location is not a factor in measuring temperature.
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Which is a common psychological side effect of dementia?
A.optimism
B. loss of brain functionality
C. emotional distress
D.loss of coordination
Answer:
D is your Answer just did the quiz
( date on bottom when I did the quiz)
Explanation:
3 - 24 - 2021
Do all systems have Inputs and Outputs? I’m sorry I’m really dumb
How might it be possible for a substance to go directly from a solid to a gas without being liquid in between
It is possible for a substance to go directly from solid to gaseous state due to sublimation.
What is sublimation?Sublimation is defined as a process in which transition of a substance takes place from solid to gas phase without passing through the intermediate liquid phase.
It is an endothermic process which occurs at temperatures and pressure below the triple point. Reverse process of sublimation is deposition in which substances in gaseous phase directly go into solid phase.
It only refers to the change in state and not for describing transformation of substances. Sublimation requires an additional amount of energy and is an endothermic change proceeding with absorption of energy.
The enthalpy of sublimation is calculated by adding enthalpy of fusion and enthalpy of vaporization.
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Help me. I need help on these questions and i don’t understand
The ____________________ metals are all of the elements located in groups 3-12 on the Periodic Table.
Answer:
Transition Metals are all of the elements kn group 3-12.
Which postulate of Dalton’s atomic theory has not been disproved by further investigation?
A. All matter is made of tiny particles called atoms.
B. Atoms are indivisible and indestructible.
C. All atoms of a given element have the same mass.
D. Atoms of an element are all identical.
Answer:
The indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons...
hope this helps u
The Daltons atomic model gave the theory of chemical combination and the law of conservation of atoms. All matter is made of atoms is not disapproved. Thus, option A is correct.
What was Dalton’s atomic theory?Dalton’s atomic theory was given by John Dalton and involved several main points. According to the theory that matter has been composed of tiny atoms that are indestructible and indivisible.
It also stated about the mass, as atoms of various elements have different masses and the properties are shared by the atoms of the same element only. It gave rise to the law of conservation of mass, definite, and multiple proportions.
One of the laws is about matter being made of tiny particles called atoms. It has been not disproved by further investigation in any of the atomic models and theories.
Therefore, option A. the matter is made of atoms is not disproved.
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how many of protien consumed by humans around the world is fish?
a) 5 percent
b)20percent
c)4p percent
d)50 percent
The answer would be 20% (B)
Explain whether the formula CuO can be used to represent both Copper oxide(1) and Copper(2) Oxide
Answer:
See explanation
Explanation:
Oxide has a 2- charge.
Copper (I) Oxide = Cu2O
Copper (II) Oxide = CuO
The formula CuO can not be used to represent both copper I oxide and copper II oxide.
The formula of an ionic compound takes into account the oxidation state and valency of the the metal cation which is usually shown as a Roman numeral in the name of the compound.
For the compound copper I oxide, the correct representation of the compound is Cu2O. This shows that oxygen has a valency of 2 while copper has a valency of 1 in the compound.
The correct representation of copper II oxide is CuO. In the compound, both copper and oxygen have valency of 2.
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Joyce poured 200 milliliters (mL) of water into a beaker, placed a thermometer in it, and heated it until it started to boil. She recorded a temperature of 100 degrees Celsius (°C) when it started to boil. She repeated the process with 400 mL of water. What would be the temperature when this second sample started to boil?
Answer:
473 °C
Explanation:
The following data were obtained from the question:
Initial volume (V1) = 200 mL
Initial temperature (T1) = 100 °C
Final volume (V2) = 400 mL
Final temperature (T2) =..?
Next, we shall convert celsius temperature to Kelvin temperature. This can be obtained as follow:
T(K) = T (°C) + 273
Initial temperature (T1) = 100 °C
Initial temperature (T1) = 100 °C + 273 = 373 K
Next, we shall determine the final temperature of the water as follow:
Initial volume (V1) = 200 mL
Initial temperature (T1) = 373 K
Final volume (V2) = 400 mL
Final temperature (T2) =..?
V1/T1 = V2/T2
200/373 = 400/T2
Cross multiply
200 × T2 = 373 × 400
200 × T2 = 149200
Divide both side by 200
T2 = 149200/200
T2 = 746 K
Finally, we shall convert 746 K to celsius temperature. This is illustrated below:
T(°C) = T(K) – 273
T(K) = 746 K
T(°C) = 746 – 273
T(°C) = 473 °C
Therefore, the temperature of the second sample when it starts to boil is 473 °C
PLS HELP What is the name of the value located in the top right of an element?
Answer:
It's the elements atomic mass and the number of neutrons and protons in an atom.
Explanation:
A student was performing a series of experiments to verify the density of a liquid. The table shows the results of four experiments. Which of these statements is correct?
Experiment No. Density (g/cc)
1 0.70
2 0.81
3 0.80
4 0.81
A) The mean of the data is 0.7.
B) The mean of the data is 0.8.
C) The median of the data is 0.70.
D) The median of the data is 0.81.
Answer:
0.8
Explanation:
since when you add them up you get 3.12 and divide it you get 0.78. Round and you will get 0.8
Someone help me with this plz due in 10 minutes ILl give brainly!!!
Answer:
which one do u want help with?
Explanation:
Write two uses of sublimation process?
Answer:
Explanation:
Practical Applications of Sublimation
Sublimation and erosion cause ablation, a process that wears down glaciers. Sublimation of iodine may be used to reveal latent fingerprints on paper. Sublimation is used to purify compounds. ... Because dry ice sublimates so readily, the compound is used to produce fog effects.
water is a compound with a chemical formula h2o. compare a physical change involving water with a chemical change involving water. how do the changes differ?
Answer:
Chemical would be water splitting into just hydrogen and oxygen. Where as a physical change would be if it turned to ice.
Explanation:
Help PLEASE HELP PLEASE
Answer:
b. k+
Explanation:
No, since the slopes are different.
Yes, since the slopes are the same and the y-intercepts are the same.
Yes, since the slopes are the same and the y-intercepts are different.
No, since the y-intercepts are different.
Option C, slopes are same but y intercepts are different is the correct answer
Which group has the highest ionization energies? Explain why.
Answer:
nobel elements (gr. 18) because they are fully stable due to octet complete--------------------------------------------------
Plz help! The best answer will be marked as brainliest!
Make a funny sentence of alloys for Magnesium
Here is an example for Mercury, it HAS to for Magnesium
“I love to travel but I do corrode aluminum so we won’t be flying off on adventures in airplanes planes anytime soon”
Answer:I love to travel however I do erode aluminum so we won't be taking off on undertakings in planes at any point in the near future
Explanation:
The sun's energy influences climate in different ways. For example, the latitudes at the equator receive more intense energy from the sun and therefore have warmer temperatures. How does the sun's energy MOST DIRECTLY influence precipitation in an area?
Answer:
The Sun's energy is transferred as both light and heat energy, that raises the temperature of an area receiving the Sunlight. The increased temperature results in the evaporation of water from surfaces and water bodies, such that the mass of water vapor rises up into the atmosphere and condenses when it gets away from the ground heat to the cooler and higher altitudes
When there is a situation of low pressure, the wind blows into the low pressure, where, in the equator, comprises of high temperature air which could contain considerable amount of vapor from the neighboring water bodies, resulting in the eventual rise of very moist air, up into the atmosphere, that condenses at low temperature at the high altitudes, accumulate into larger masses of liquid water, and fall as rain
Explanation:
What two positions would the moon be when we have the lowest tidal range?
Answer:
Quarter and half moons
Explanation:
Help me ASAP !!!!!!!!!!!
Answer:
What do you need help on
Explanation:
Due in 5 min PLEAZE HELP!!
Answer:
CO
Explanation:
Co, Cr, and Cu are elements. Elements cannot be broken down by a chemical change, but compounds can. and CO is a compound
Answer:
co
Explanation:
