Answer:
Physical properties of a substance are characteristics that can be observed without altering the identity of the substance. Color, odor, density, melting temperature, boiling temperature, and solubility are examples of physical properties. Physical properties can be used to identify a pure substance.
Explanation:
Heat capacity of a material is dependent upon the material's mass.
True or false?
Hello
Answer:
True.This quantity is known as the specific heat capacity (or simply, the specific heat), which is the heat capacity per unit mass of a material. Experiments show that the transferred heat depends on three factors:
(1) The change in temperature,
(2) the mass of the system.
(3) the substance and phase of the substance.
wave has a frequency of 5hz and a wavelength of 25 m/s.
what is the speed of the wave
Answer:
125m/s
Explanation:
speed= wavelength×frequency
= 25×5
=125
The speed of the wave will be 125 m/s.
What is speed?The magnitude of an object's rate of change of position with time, or the magnitude of change of position for each unit of time, is its speed; it can be considered as a scalar quantity.
Speed = wavelength × frequency
Calculation of speed is shown below:
It is given that wavelength = 25 m/s, frequency = 5 hz.
Speed can be calculated by using the formula:
Speed = wavelength × frequency
speed = 25m/s × 5 hz
speed = 125 m/s
To know more about speed.
https://brainly.com/question/7359669.
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Which two formulas represent compounds?
A. Ag
B. HCI
C. H2
D. NaCl
Answer:
it is A and BExplanation:
A and b are Sodium chloride and Hydrogen chloride which are both compounds.
Which of the following substances cannot be separated?
O homogeneous mixture
heterogeneous mixture
element
O compound
Answer: Elements.
Explanation: Homogeneous and heterogeneous is just if a mixture is uniform or not. Mixtures and always be separated. Compounds are elements that combined which can be broken down again. So I say the logical answer is an element since it's pure and cannot be broken down into other elements or more of it's self.
What are some uses we might have for standing waves?
true or false forming a hypothesis is the first strip of the scientific method
Answer:
True (probably)
Explanation:
I think it's true since creating hypothesis is the start of almost every scientific activities that we usually know. Please correct me if I'm wrong.
Muscles, bones, skin, and
organs are all mainly made up of
(PICK
ONE) -> Fats Fiber Minerals | Protein.
Answer:
The answer is Protein.
Help fast. If 1500 joules of energy is used to heat 50g of water with a temperature of 20°C, then what will the final temperature be? (Water’s specific heat is 4.18 j/g°c)
Answer:
27°C
Explanation:
q = 1500 J
m = 50g
c = 4.18 J/g°C
q = m·c·ΔT
ΔT = [tex]\frac{1500J}{50g*4.18\frac{J}{gC} } = 7C[/tex]
ΔT = final temperature - initial temperature
Final temp = 20 + 7 = 27°C
what method of cleaning tools and equipment do you follow or apply?
I clean with a rag wdym
A Solution is a mixture of two or more substances_____
O a in water
O b. seperate from one another
O c in the same phase
Od come to room temperature
Answer:
In the same phase
Explanation:
Because when you make a solution you have to keep them in the same phase or you will oof.
why is the temperature different in different places around world
Answer:
it is because they are placed geographically different.
What is the difference between a physical and a chemical property? (please hurry)
Answer:
A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. ... A chemical property describes the ability of a substance to undergo a specific chemical change.
Explanation:
Velocity and speed are both measurements of how fast something is moving however velocity is different from speed because
A) velocity and speed are the same thing
B) velocity is usually faster than speed
C) The velocity of an object also tells us the direction something is moving
D) velocity is how fast something is changing its speed
Answer:
C
Explanation:
Velocity is a vector quantity I.e it has magnitude and direction
Speed on the other hand is a scalar quantity I.e it has only magnitude
In which layer of Earth's interior is the inferred temperature
6,000°C?
Answer:
outer core
Explanation:
the outer core is estimeted to be 6,000 C
Looking at the periodic table, which of theses elements has the smallest atomic radius (A. Sodium B. potasaium C. Hydrogen D. LithIum)
Answer:
The answer is C. Hydrogen
Explanation:
It has a radius of 53 pm calculated.
If 5,800 j of energy are applied to a 15.2 kg piece of lead, by how much does the temp change if the specific heat of lead is 0.128
Answer:
The answer will be 2.98K
Explanation:
Using the formula:
Q = mc∆T
Q= 5,800 (heat in joules)
m= convert 15.2kg to g which is 15200g (mass in grams)
c= 0.128 J/g °c (Specific heat capacity)
∆T= what we need to find (temperature change)
5800J = 15200g x 0.128 x ∆T
= 2.98K
How many electrons are shared between one nitrogen
atom and one carbon atom
why must we include units with a measurement?
Answer:
Units are used to show if a certain calculation is on track.
Explanation:
For example, 5.1 inches is way shorter than 5.9 inches.
How many kilograms does 300 cg of cheese weigh?
Answer:
300 centigrams of cheese would weigh 0.003 kilograms.
Explanation:
1.As with any grid, the periodic table has ________ (left to right) and __________ (up and down).
2.Every row is called a ___________.
3.All the elements in the same period have the same number of _______.
Each column is called a __________.
4.The elements in each group have the _________ number of electrons in the outer orbital (or valence electrons).
5.Noble gases and helium are considered “happy” because their ______________ shell is ___________.
this was not a multiple-choice its about the periodic table
Answer:
rows and columnsperiodatomic orbitalsvalence electrons4.similar properties
5.electrons are very reactive
the outermostbhag bhag aaya sheer
Answer:
i dont undersstand lol
Explanation:
Explanation:
bhag bhag aaya sheer
..........
Why would you expect soap to taste bitter
Answer:
It is basic
Explanation:
Soaps are always basic, and basic compounds have a bitter taste.
Which of the following factors contributes to the relatively greater atomic size of the higher atomic number elements within a particular family of the periodic table?
a. greater number of energy levels b. larger nuclei
c. greater number of protons d. smaller number of valence electrons
What elements are involved with fission
Answer:
Several heavy elements, such as uranium, thorium, and plutonium, undergo both spontaneous fission, a form of radioactive decay and induced fission, a form of nuclear reaction.
7. Compared with our'Sun, the star Belelgeuse is
smaller, hotter, and less luminous
smaller, cooler, and more luminous
larger, hotter, and less lumulous
larger, cooler, and more luminous
Answer:
Larger, cooler, and more luminous.
Betelgeuse is red in color, and that means that the surface of it is cooler than the sun (bluish white is hottest, and red is lowest). It is also common knowledge that it is larger, so the correct option would be D. Hope this helped :)
Water, air, buildings, food, and everything visible and invisible have mass and takes up space. What is the word used to describe anything that has mass and takes up space?
Answer:
Matter
hope this helps
Answer:
matter
Explanation:
Did the test
What part of the sun do we see from earth?
Answer:
photosphere
Explanation:
photosphere
There are 3 main layers of the Sun that we can see. They are the photosphere, the chromosphere and the corona. Together they make up the "atmosphere" of the Sun. The part of the Sun that glows (and that we see with the naked eye) is called the photosphere
Answer:
There are 3 main layers of the Sun that we can see. They are the photosphere, the chromosphere and the corona. Together they make up the "atmosphere" of the Sun. The part of the Sun that glows (and that we see with the naked eye) is called the photosphere.
Explanation:
Yes, that's right a layer of the sun is called Corona
Coincidence, I think not
Based on the physical properties of elements on the periodic table, which of the
following elements will most likely act as both a conductor and insulator? *
Aluminum
O Sulfur
O Copper
Silicon
How many inches/second are in
1.73 meters/minute?
A. 68.1 in./s
B. 0.0288 in./s
C. 1.14 in./s
D. 2.64 in./s
Answer:
1.73 meters / minute = 1.14 inches / second
Explanation:
The number of inches present in 1.73 meters/minutes is equal to 1.14 inches/seconds.
What is conversion factor?Conversion factor is a quantity which is get multiplied or divided with an any other given quantity to convert the given quantity into any other quantity.
Given quantity = 1.73 m/min
We know that, 1 meter = 39.37 inches
1.73 m/min = 1.73 × 39.37 = 68.11 inches/min
Also we know that, 1 min = 60 min to convert the above quantity into sec we should divide that by 60 as:
68.11 inches/min = 68.11 / 60 = 1.135 inches/sec (1.14)
Hence the required quantity is 1.14 in./s.
To know more about conversion factor, visit the below link:
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Identify the error in the following statement:
A scientific theory is well-substantiated, fact-based, and unchangeable.
O A. Scientific theories can change as scientists continue to test ideas and gather evidence.
Please help me on this! I’ll mark you the brainliest
B. The statement is describing a hypothesis rather than a scientific theory.
O
C. A scientific theory is not well-substantiated.
D. A scientific theory is not fact-based.