Answer:
By putting the liquid water in the fridge
Explanation:
When it is solid the heat will melt to liquid water and if you put it inside a boiling kettle if it boil finished it will bring out gas,if you open it the cover of the kettle you see water if you put it in the fridge and it will be solid again.
Write each formula to solve for density, volume and mass.
Help me pls I will mark you as brain
before making a covalent bond, where do the atom's electrons spend most of their time?
Answer:
Before bonding, the atom's electrons spend most of their time around the nuclei of each atom. Once bonded, the electrons spend most of their time between the two nuclei
Is hot tea a substance or a mixture
Answer:
IS A SUBSTANCE AND MIXTURE
Cho 1,12 lít NH3 điều kiện tiêu chuẩn tác dụng với 16 g CuO nung nóng sau phản ứng còn một chất rắn x còn lại a tính khối lượng rắn x thu được b tính thể tích dung dịch HCl ph = 0,7 đủ để tác dụng với x
Answer:
11
Explanation:
because jrjrbd kiubsk luvs jd8uga
Which is used in radioactive dating?
O A. carbon-14
O B. index fossils
O C. hydrochloric acid
O D. law of superposition
best answer will be tagged brainliest.... no spamming pliz
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A. Chloride ions (CI)
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I will brainless who can answer this all pleaseeeeej
Answer:
1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. FALSE
6. TRUE
7. TRUE
8. TRUE
9. TRUE
10. TRUE
Explanation:
1. Conduction occurs more readily in solids and liquids
2. Gold is used as a contact metal in the electronics industry as it is a good conductor of both electricity and heat.
3. None
4. Radiation is the fastest mode of heat transfer while conduction is the slowest mode of heat transfer
5. Heat from Sun reaches us by the process of radiation
6. None
7. It is the motion of particles that creates a form of energy called heat (or thermal) energy that is present in all matter
8. At a temperature of 0o C, the thermal energy within a given system is also zero
9. None
10. None
PLEASE MARK BRAINLIEST, THANKS <3
I need help I don’t understand it and I need it done before the end of today
Answer:
May be trial 2..................
Use metric and U.S. conversion factors to solve the problem.
Question - If a student is 175 cm tall, how tall is the student in meters?
Explanation:
100cm = 1m
1cm=1/100 m
175cm = 175/100 m = 1.75m.
hope this helps you.
If a student is 175 cm tall, then according to the metric system the same student is 1.75 m tall.
What is a Metric system?A metric system may be defined as a type of system that significantly weighs and measures the mass and distance respectively in which the meter is the unit of length and the kilogram is the unit of weight.
A metric system is a standard system of measurement which utilizes the meter, liter, and gram as base units of length for distance, capacity for volume, weight for mass, etc.
According to the question, the height of a student in cm = 175 cm.
Then, from the general conversion rule,
1 meter = 100 cm.
1 cm = 1/100 meter.
175 cm. = 175/100 = 1.75 meters.
Therefore, if a student is 175 cm tall, then according to the metric system the same student is 1.75 m tall.
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Phosphorus-32 has a half-life of 14.3 years. How many grams remain after 57.2 years if you have
4.0 g of the isotope at the beginning?
Answer:
29.3 years to live
Explanation:
Phosephurus loses 32 years at his life -32
then he gains 14.3 years back and another 57.2 years
totaling 29.3 years he will live
how many valence electrons does alkali metals gain or lose
Answer:
Alkali metals have 1 valence electron on their outer shell. They are more stable when they have 8 valence electrons, so they want to lose that valence electron. They do this by bonding with other elements. When they lose their 1 valence electron, they have a full octet and are therefore stable.:
pls help me on this I have 5 minutes left to submit
#1
Heterogenous mixture mean unsimilar substances .
Chicken noodle soyp.salt waterpropane.#2
An element is a substance made of only one type of atoms
Example-Al,SWhich of the following represents the velocity of a light wave?
O A. E = fx2
O B. c = hxf
O C. E = hxf
O D. c = fx2
Answer:
D. c = fλExplanation:
c = fλ
where" c "is the speed of light ,
• "f" is the frequency of the electromagnetic waves,
• " λ" is its wavelength.
The term that represents the velocity of a light wave is c = fx2. The correct option is D.
What is velocity?Velocity is the speed by which an object moves or do any motion. When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time.
Light waves are the movement of waves in a direction. There are two types of transverse and electromagnetic. They are divided on the way of their movement.
The velocity of the light wave is the speed at which the light wave moves in a specific direction in time. The formula is given below:
c = fλ
Where c is the speed of light.
f is the frequency of the electromagnetic waves,
λ is its wavelength.
Thus, the correct option is D. c = fx2.
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what is physical change
Answer:
changes that dont result in the formation of new substance with new properties.
which level of protein structure do beta-pleated sheets and alpha helices represent?
microfilaments are composed of ____________ in ____________ arrangement.
Explanation:
microfilaments are composed of repeating actin subunits in a thin double-helix arrangement.
how many protons does boron-11 atom have
Answer:
5
Explanation:
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Only one of the following is a characteristic of a heterogeneous mixture
a. composition is uniform throughout the mixture
b. contains two or more phrases
c. is a pure substance
d. the mixture composition is always the same
Answer:
b contains 2 or more phases
I need the anwer plz helppp this question is worth 25 point
Explanation:
Enzyme X works on sugar C substrate.
Density is a ___ that ____ the ____ of an object to its ______
Answer:
matter , equals , weight , size
Convert 3,124,991 centimeters (cm) to miles (mi) rounding to 4 sig figs
Answer:
19.417794 mi
Explanation:
Answer:
19.41
Explanation:
Give an example of a type of cookie that is a heterogeneous mixture, and a type of cookie that is a homogeneous mixture. Explain your reasoning.
plz answer
A landslide carries many tons of rock from a hillside into a valley. All of the plants in the valley are buried. New plants that begin to grow in the valley after the landslide will MOST LIKELY lack —
Answer: c
Explanation: i got a 100 on the test
is plasma a matter or no
Answer:
yes
Explanation:
it is very hot matter and solid, liquid and gas and plasma is the states of matter
Answer: Plasma is a state of matter that is often thought of as a subset of gases, but the two states behave very differently. ... But unlike ordinary gases, plasmas are made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely. so True.
Explanation: hope this helps!
The atoms of which elements tend to gain electrons? Which tend to lose electrons?
A.Metals tend to lose electrons; nonmetals tend to gain electrons.
B.Metals tend to gain electrons; nonmetals tend to lose electrons.
C.Most metals and nonmetals tend to lose electrons; metalloids tend to gain
electrons.
D.Metals and most nonmetals tend to lose electrons; noble gases tend to gain
electrons.
Answer:
Nonmetals tend to gain electrons and metals tend to lose electrons.
Explanation:
Which substance tends to form anions when bonding with other elements?
sodium
oxygen
argon
calcium
Answer:
B) Oxygen
Explanation:
i just took the test.
Any species that contain negative charge over it called anion. Out of sodium, oxygen, argon and calcium, oxygen is the only element that can form anion. So option B is correct option.
What are non metals?Non metals are the element that have property to gain electron. When any element gain electron then element attain negative charge and that element is called anion.
In our question sodium, argon belongs to metals category and these lie on the left side of the periodic table. Metals are meant to release electron and hence become cation.
Argon is non metal but it is a noble gas which has property to not to react as its octet is complete. Thus the only element that is non metal here is Oxygen that forms anion. Its oxidation state is -2. Thus option b is correct option
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how many neutrons does the isotope of hydrogen called deuterium have
Answer:
The deuterium has one neutron and one proton (mass number equals 2) whereas, the far more common hydrogen isotope, protium, has no neutons in the middle.
Explanation
can evaporated milk be substituted for heavy cream?
Answer:yes
Explanation:
Aluminum chlorohydrate, al2(oh)5cl, is an active ingredient in some antiperspirants. what is the mass percent of aluminum in this compound?
30.93%
15.26%
39.48%
21.75%