Answer:
1.605cm = 4 significant figures
16.050cm = 4 significant figures
16.050cm = 4 significant figures
12 + 12.5 + 125 = 149.5 = 4 significant figures
1.62 × 10^3/2.8 × 10^-5 = 1620/0.000028 = 11 significant figures
Describe how iron and sulfur can be an element, mixture, and a compound.
iron is a metal and sulfur is a non-metal and both are in the periodic table which means they are elements. Together they can form a compound with an ionic bond. and can be mixed to form a mixture.
What is the harm done to the environment called
Use the periodic table to match each of the following element symbols to its name, atomic mass, or atomic number Match B) 32.06 (atomic mass) c) 14 (atomic number)
I need help with the same thing
Not sure if you need the answer anymore but...
Sp is A (antominy)
S is B (32.06 u)
Si is C (14)
Hope I helped anyone who needed this answer!
The overall process of photosynthesis has the balanced chemical equation 6CO2 + 6H2O --> C6H12O6 + 6O2. What does this tell you about the relative amounts of carbon dioxide and water consumed in this process?
Answer:
Equal parts are needed to make glucose and oxygen. The excess oxygen is released into the air
Explanation:
This equation explains why having plants in your house is good.
Dr.Okoh has a steel beam with a volume of 35cm to the third power and a mass of 1040g. Find the density
Answer:
The answer is
29.7 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} [/tex]
From the question
mass of steel beam = 1040 g
volume = 35 cm³
The density of the steel beam is
[tex]density = \frac{1040}{35} \\ = 29.714285...[/tex]
We have the final answer as
29.7 g/cm³Hope this helps you
If a liquid has a volume of 5800 mL and you need the mass in Liters, will the number appear to
become smaller or larger?
Answer:
The number will appear to become smaller (from 5800 mL to 5.8 L).
Explanation:
The conversion of milliliters to liters is the following:
1 L = 1000 mL
Hence, the volume of 5800 mL to L is:
[tex] V = 5800 mL*\frac{1 L}{1000 mL} = 5.8 L [/tex]
Therefore, the number will appear to become smaller (from 5800 mL to 5.8 L).
I hope it helps you!
does anybody knows the field in science for the levels of organization
Answer:
Taxonomy
Explanation:
Taxonomy is the science of naming, describing and classifying organisms
Why is it better to mix drops of solutions in a reaction plate rather than to mix milliliters of a solution in a flask?
Explanation: Hey Sonia, I see I'm not the only one at school struggling in Chem. My best guess is to minimize the likelyhood and size-amount of a chemical reaction.
How do each earth’s layer compare to each other?
*BRAINLIEST* Is calcium nitrate solution an element, compound, homogenous mixture, or heterogeneous mixture?
Answer:
It's a compound.
Answer:
Homogeneous mixture.
Explanation:
All solutions are homogeneous mixtures; therefore, a calcium nitrate solution would be a homogeneous mixture.
Definition of malleable? And example
A freighter ship carrying a cargo of uranium hexafluoride sank in the English Channel in late August 1984. The cargo of uranium hexafluoride weighed 7.51 x 104 kg and contained 1.47 x 106 L of UF6. What is the density, in g/mL, of uranium hexafluoride?
Answer:
Heyo (Ish Mash Potato) XD
Explanation:
a freighter carrying a cargo of uranium hexafluoride sank in the english channel in 1984. the cargo of uranium hexafluoride weighed 2.25x10 to the eight power. kg and was contained in 30 drums, each having a volume of 1.62x10 to the sixth power L. what is the density in g/ml, of uranium hexafloride.
Hope Mr. Mash Potato Helped!!!
Explanation:
A freighter ship carrying a cargo of uranium hexafluoride sank in the English Channel in late August 1984. The cargo of uranium hexafluoride weighed 7.51 x 104 kg and contained 1.47 x 106 L of UF6. What is the density, in g/mL, of uranium
can someone help me calculate the average speed??
Answer:
3 meters per second
Explanation:
Average speed = total distance / total time
We know that total distance = 45 meters and total time = 15 seconds, hence, average speed = 45 meters / 15 seconds = 3 meters per second.
Answer:
V=S/t
Explanation:
V=?
S= 45meters
t=15sec
V=S/t
V=45/15
V=3m/sec
Electrons involved in bonding between atoms are____.
Answer:
valence electrons
Students were creating flashcards to help them remember the advantages and disadvantages of petroleum. Which student's flashcard is correct? Question 6 options: a) Student A: Petroleum is a solid fossil fuel that can be used to make plastics. It is the most polluting fossil fuel. b) Student B: Petroleum is an energy-rich fossil fuel used to make gasoline. It can cause environment damage if it spills or is burned. c) Student C: Petroleum is a gas that burns cleanly and is used to generate electricity. It has to be drilled from under the ocean floor. d) Student D: Petroleum is a type of biomass that is cheap and available most everywhere. It can create greenhouse gases when burned.
Answer:
C
Explanation:
I think its correct because I think c is the right answer
How many liters are equivalent to 645 mililiters
Answer:
0.645 liters
Explanation:
THE QUESTION IS equivalent 0.645 Liters
What point were the authors of the Declaration trying to make in the Preamble?
HELP.
Answer:
To explain why they are revolting against the king
Explanation:
Fire blankets are used for
Answer:
to put out fires or keep ppl safe from fire
Explanation:
How many moles are in 19.4 grams of sodium( Na)?
Answer:
0.844 mol Na
Explanation:
19.4 g Na x (1 mol Na/22.99 g Na) = 0.844 g Na
Please help me answer all of this! (Will give brainliest answer and hearts) Please and thank you!
Answer:
Hi there!
Your answers are:
1. Physical
2. Chemical
3. Chemical
4. Chemical
5. Chemical
6. Physical
7. Physical
8. Chemical
Explanation:
Physical, aka mechanical, digestion occurs due to ACTIONS from the body! This can be contracting muscle walls to move it along or the use of teeth to crush food. Chemical digestion is due to some acid or chemical that the body makes! This breaks down food so the body can process it.
I hope this helps!
How dose the Temperature of a bouncy ball affect its bounce height?
Answer:
The colder the bouncy ball is the harder the rubber gets so it will contract ans make the bouncy ball heavier, the hotter the bouncy ball is the lighter it gets because the ball expands making the bouncy ball bigger
Explanation:
Chlorine-
What is the mass number of this element?
How many neutrons?
Answer:
Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure. The chemical symbol for Chlorine is Cl. Neutron Number and Mass Number of Chlorine Mass numbers of typical isotopes of Chlorine are 35; 37.
Explanation:
Identifying Physical and Chemical Properties
Ques: how to identify physical or chemical properties
Ans: you can identify them by their properties. make sure that it matches its property. but you must know the physical and chemical properties . i will give an example .so how to identify boiling of eggs and changing of water into ice. Physical properties
-it can be reversed back
-it is temporary change
-no new substance is formed
chemical properties
-it cannot be reversed back
-it is permanent change
-new substance is formed
now boiling of eggs matches all property of chemical change so it is chemical change. changing of water to ice matches all property of physical change so it is physical change.
hope it helps
Which of the following describes a reference point?
A. The point at which the direction of motion changes
B. The center point of a grid
C. The position of an object after its motion has stopped
D. The location of an object before its motion begins
Answer:
A.The point at which the direction of motion changes
The point at which the direction of motion changes is described as a reference point.
What is motion?
Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.
Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.
Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic mechanics is based on modern kinematics.
Learn more about motion,here:
https://brainly.com/question/22810476
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If the chemical properties of a substance remain unchanged and the appearance or shape of an substance changes it is called a
a.Chemical change
b.Physical change
c.Chemical Property
d.Both a physical and chemical change
e.Neither a physical or chemical change
Answer:
B
Explanation:
physical change is the answer I hope
Answer:
A
Explanation:
it is A because i am really smart
what is a hypothesis?
Answer:
A suggested solution for an unexplained occurrence.
Explanation:
A hypothesis is an educated guess, because you don't know what will happen / what is going to happen, you are just making a guess on what you think will happen. It is a solution for an unexplained occurrence.
4. Circle the letters of elements that are required for a measurement to
make sense.
a. scientific notation
b. numbers
с. exponents
d. units
Answer:
(b) numbers and (d) units
Explanation:
To measure any quantity, numbers and units are required. It can be understood with an example.
We measure a length of a piece of wood as 5 cm. In this case 5 is a number and centimeters or cm is a unit in which we measure its length. It means for any measurement, number and units are important elements that are required to make sense.
Hence, the correct options are numbers and units.
How did scientists find out about the the evolution of the atmosphere?
What could J. J. Thomson conclude from his experiments? Atoms are mostly empty space. Most of the mass of the atom is concentrated in the center. Atoms must balance positive and negative particles. Atoms are indivisible.
Answer:
atoms must balance positive and negative particles
Explanation:
Answer:
C: Atoms must balance positive and negative particles.
Explanation:
Which is an example of how society affects science?
1.Laws have been passed banning the production of a living copy of a person.
2.Prices of prescription drugs have increased dramatically over time.
3.A girl has decided to bake a cake for her sister's birthday.
4.Some people enjoy watching stars and planets in the night sky.
Answer: Laws have been passed banning the production of a living copy of a person.
i just took the test so i know the answer is correct.
Answer:
The answer is A.
Explanation:
I just did the edgunuity test.
