*20 points* Pls answer questions in a positive way NO LINKS NO FILES Thank you
Answers
Answer:
A compound is a substance made of two or more different atoms which are chemically combined(Option B)A mixture is made of two or more substances that are not chemically combined (OptionB)Explanation:
Example of compound(CO)
Example of mixture(Milk)
Related Questions
You have been handed a 1892.6g sample of Rion and determine that it has
a volume of 200.0 mL. What is the density of Rion?
Answers
Answer:
9.46 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 1892.6 g
volume = 200 mL
We have
[tex]density = \frac{1892.6}{200} \\ = 9.463[/tex]
We have the final answer as
9.46 g/mLHope this helps you
what is the density of a object that has a volume of 8 ml and a mass of 22 grams?
Answers
Answer:
The density of the object is 0.32gcm3.
Explanation:
hope this helps
Which element most likely has the same number of valence electrons as silicon (Si)?
O germanium (Ge)
O arsenic (As)
O phosphorus (P)
O sulfur (S)
Answers
Answer:
germanium (Ge)
Explanation:
both belong to the same group
Answer:
A. germanium (Ge)
All alkalis are bases but not all bases are alkalis. True or False?
Answers
Answer:
A substance that neutralizes an acid is generally called a base and the basic substances that are soluble in water and alkali and the properties of alkalis are due to these hydroxide ions(OH−). ... - Thus, conclusively it can be said that all alkalis are bases but all bases are not alkali.
Answer:
This is false
Explanation:
it is actually the opposite, all bases don't dissolve in water, but alkali is a base that does dissolve in water. So, alkalis are bases, but not all bases are alkalis
Pinky, message in one of my answers that doesn't have an comment on pls.. i wish i can tlk to u.. but this new system in brainly.. oof
I need help with this , here are the words ( black,radiation, time, holes and universe
Answers
Is hot tea a substance or a mixture
Answers
Answer:
IS A SUBSTANCE AND MIXTURE
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?
Answers
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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How would the boiling point of water be affected if you doubled the amount of water?
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Answer:
The boiling point wouldn´t be effected. The amount of time it would take to get it to that point would increase
Explanation:
How many grams of H2O is needed to produce 0.75 moles of ?
Answers
Answer:
H2O2 + H2S → 2H2O + S? that is the answer
Which is used in radioactive dating?
O A. carbon-14
O B. index fossils
O C. hydrochloric acid
O D. law of superposition
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how many neutrons does the isotope of hydrogen called deuterium have
Answers
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
Someone pls help me I will make you brain
Answers
Answer:
the 3rd option is the answer
Dissolving and melting are similar because both
A. result in a change in mass.
B. are kinds of physical change.
C. involve even mixing of substances.
D. result in new substances being formed.
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Answer is B are kinds of physical change.
Is the correct answer <3
which level of protein structure do beta-pleated sheets and alpha helices represent?
Answers
what is the density of an object with a height of 1 and a mass of 36
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you will divide 36 by 1 and multiply 2 on both sides which makes 72 by 2 so 2into 1 is 2 and 2 into 36 is 72
best answer will be tagged brainliest.... no spamming pliz
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[tex]\huge \mathcal \fcolorbox{cyan}{black}{ \blue{AnSweR}}[/tex]
A. Chloride ions (CI)
[tex] \large{ \green{ \bold{ \underline{ \underline{ \overline{ \overline{ \pink{hope \: this \: helps \: you \: \: ✌}}}}}}}}
[/tex]
Write each formula to solve for density, volume and mass.
Answers
V= M/D
M= D x V
hope it helps!!
PLEASE HELP i have medical issues and i am behind
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
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Answer:
b contains 2 or more phases
Two scientists are investigating the properties of water. In one experiment, they notice that water breaks down to hydrogen and oxygen gas during a chemical reaction. Which of the following does this experiment demonstrate
A. it demonstrates that a water molecule consists of two hydrogen atoms and one oxygen atom.
B. it demonstrates that water consists of atoms
C. it demonstrates that water is a compound
D. it demonstrates that water is an element
Answers
Answer:
A
Explanation:
Obtain and Communicate Information 1. SEP Obtain Scientific Information Conduct research to learn about the history of atomic models and the scientists who developed the models. Identify any experimental evidence and reasoning that supported each model. I
Answers
Answer:
Sorry I don't know.
Explanation:
I'm in 8th grade.
true or false: Halogens are very stable because they have a full outer shell of 8
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Answer:
True
Explanation:
Halogens are very stable because they have a full outer shell of 8
true or false?
Brainiest plz and hope this answer helped let me know if you need any more help I am glad to help!
It's true!
1. A unit of mass used to express atomic and molecular weights. One proton or
neutron equals one mass unit.
Atom
Atomic mass
Nucleus
Amy
Protons
Neutrons
Uranium
Electrons
Hydrogen
Answers
Answer:
Atomic mass
Explanation:
It is the unit used o express atomic and molecular weights.
is plasma a matter or no
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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 thermochemical equation for the formation of ammonia (NH3) is shown below. How much energy (kcal) is released when 6.0
mol of H2 reacts?
(Note - when the direction of energy flow is indicated, e.g. "released", the negative sign is not used in the answer.
3 H2(g) + N2(g) →2 NH3(g) triangleH = - 11 kcal
Answers
In the formation of NH₃, -22 kcal are released when 6.0 moles of H₂ react.
Let's consider the thermochemical equation for the formation of ammonia.
3 H₂(g) + N₂(g) → 2 NH₃(g) ΔH = - 11 kcal
As we can see, 11 kcal are released when 3 moles of H₂ react. The heat released when 6.0 moles of H₂ react is:
[tex]6.0molH_2 \times \frac{(-11kcal)}{3molH_2} = -22kcal[/tex]
In the formation of NH₃, -22 kcal are released when 6.0 moles of H₂ react.
Learn more: https://brainly.com/question/2874342
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
Answers
Answer:
11
Explanation:
because jrjrbd kiubsk luvs jd8uga
Could somebody please give me an example of some physical properties for any substance?
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Answer:
A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.
Explanation:
Explain how copper conducts electricity?
Answers
Answer:
Copper is a metal made up of copper atoms closely packed together. As a result, the electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons because they help copper be a good conductor of heat and electricity.
Explanation:
what does the bottom layer represent?
Answers
Answer:
A blanket
Explanation:
bottom layer is a nice comfy blanket you could use to sleep with
Explanation:
Something comfy you can use for yourself or others.
Which 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
Answers
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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can evaporated milk be substituted for heavy cream?
Answers
Answer:yes
Explanation: