Read the water level with the correct number of significant figures.
1) 5 mL
2) 5.3 mL
3) 5.32 mL
4) 5.320 mL
5) 5.3200 mL
Answers
Answer:
the answereis is 5 ml
Explanation:
hope thhis helped.
Related Questions
What is the difference between melting and melting point
Answers
Answer:
Melting Is when a substance is actually melting and melting point is a point at which a substance is able to melt.
I was riding my bike the other day under some very big power lines on a trail and when ever i touched the brake handles it would shock me and when I was farther away from the power lines it wouldn't hurt as much.
Answers
Answer:
When the big power lines are down, electricity is going through the ground and up you bike to the handles, so when yo touch it, you are electrocuted
Explanation:
Snow that weathers buildings in a city is an example of: A mechanical weathering B acid precipitation carbonation D oxidation
Answers
Answer:
A
Explanation:
because its weathering them down.
1. Naturally occurring europium (Eu) consists of two isotopes was a mass of 151 and 153. Europium- 151 has an abundance of 48.03% and Europium-153 has an abundance of 51.97%. What is the atomic mass of europium?
Answers
Work:
151(0.4803) = 72.52 amu
153(0.5197) = 79.5 amu
72.5 + 79.5 = 152 amu
What does 120V AC stand for
Answers
120V is the AC voltage on a single hot wire in your home with respect to neutral (or ground). ... The 0V line in the middle is the voltage of your neutral line. AC power oscillates at 60 cycles per second (60 Hz) in the U.S. Other parts of the world use a 50Hz standard. The AC voltage oscillates from +120V to -120V
Explain what happens when energy is increased
on the three phases of matter.
Answers
Answer:
If we begin with a cube of ice composed water molecules in a crystalized form we are dealing with water molecules with their lowest amount of energy. These molecules have such low amounts of energy that their movement is almost imperceptible. This form of matter for water is at and below 0 C.
If we add heat to the ice thereby increasing the energy in the molecules of water these molecules begin to vibrate at much higher velocities. These vibrations allow for the molecules of water to escape their positions in the crystal and begin to flow into a liquid. This range of temperature is from 0 C to 100 C.
If we continue to add energy and drive the temperature up to 100 C the molecules of water will vibrate so rapidly that they will break away from the liquid form and move into a gaseous state as steam escaping into the the air. This vaporization actually takes place constantly at the surface of the water creating a thin vapor layer at the surface of any body of water.
This is a simplification of the chemical process but basically the amount of energy in the molecules will determine the phase of matter.
Explanation:
i tried to submit an answer earlier but it didn't load
please mark me as brainliest!!
How does one recognize a periodic trend on the periodic table?
O A. Find elements in random positions of the periodic table.
B. Look for predictable changes and patterns.
O C. Look for all elements with 2 electrons in
any orbital.
D. Compare an element's properties to the properties of a noble gas.
Answers
Answer:
B. Look for predictable changes and patterns.Explanation:
Answer:
B
Explanation:
Table:Question 1
All of these elements are metals except
Select one:
helium.
gold.
sodium.
aluminum
Answers
Answer:
Helium is nonmetal
Explanation:
At immense pressures (such as what exists in the center of gas giant planets like Jupiter and Saturn), both Helium and Hydrogen enter a metallic state, where both will conduct electricity. Helium turns into a liquid metal similar to Mercury. So, helium can be a metal.
4) Ramon is playing soccer. The ball comes straight at him, and he kicks it to a player on his right. His kick is an example of A) a pull that stops the ball. B) a force that changes the roll of the ball. C) a pull that creates the motion of the ball. D) a force that changes the direction of the ball. Eliminate
Answers
Answer:
it's D my guy
Explanation:
Answer:
I took a usatestprep with this same question so i know the answer is D
Hopefully you find this helpful. :)
Which of the following types of energy does an object store in the bonds of atoms and molecules? (5
points)
Chemical energy
Gravitational energy
Kinetis energy
Sound energy
Answers
Answer:
Chemical Energy
Explanation:
Answer:
yes
Explanation:
A scientist is unsure about the accuracy of her experiment. She has checked her equipment and found it to be in good working order, checked her data and found it to be accurate, and reviewed her interpretation of the data, which she found to be logical. What should she do in addition to check the accuracy of her results?
Group of answer choices
Answers
Answer:
repeat the experiment
Explanation:
I am big brain. if she wants to know if it is correct, repeating the exact ay would show her if it is right or if she did something wrong
Calculate the volume of a cube having sides 3.0 cm in length
Answers
Answer: 27
Explanation:
3*3*3
you take l*w*h (3*3*3)
How many liquids are found on the periodic table?
1
Answers
There are six liquids found on the periodic table.
1. Bromine
2. Mercury
3. Caesium
4. Gallium
5. Rubidium
6. Francium
On a cool morning, Uyen’s breath can form a cloud when she breathes out. Which changes of state are most responsible for Uyen seeing her breath in this way?
melting
condensation
deposition
sublimation
Answers
Using the periodic table, predict which elements will have similar chemical
properties or reactivity?
A.Nitrogen, sulfur, and bromine
B. Rubidium, yttrium, and zirconium
C.Magnesium, strontium, and barium
D.Cadmium, calcium, and carbon
Answers
Answer:
C. Magnesium, Strontium, and barium
These four elements are in the same group or family. They are in the alkaline earth metals.
Water molecules stick together by a force called?
Answers
Answer:
Cohesion
Explanation:
Depending on how attracted molecules of the same substance are to one another, the substance will be more or less cohesive. Hydrogen bonds cause water to be exceptionally attracted to each other. Therefore, water is very cohesive.
1. Matter can be measured in many ways for specific purposes. Which measurement depends on the force of gravity it is not reliable measurement?
A. Mass
B. Weight
C. Volume
D. Temperature
2. A bar of gold occupies a volume of 17.0cm3 and has a mass of 34.5g. What is the density of that bar of gold?
A. 2.1 ml/g
B. 2.0 g/cm3
C. 0.49 g/cm3
D. 0.51 ml/g
3. What volume of copper will weigh exactly 240g and have a density of 10.5g/cm3
A. 0.04g/cm3
B.18.2g
C.22.8g/cm3
D.21.4 cm3
Answers
Answer:
1. B- weight
2. B- 2.0g/cm3
3. C- 22.8g/cm3
Explanation:
If you increase the number of hours that you practice, you can score more goals in soccer.
a. Hypothesis?
b. How could you set up this experiment?
Answers
Answer:
A.Hypothesis
Explanation:
Answer:
Yes
Explanation:
Hypothesis: If i increase the number of hours i practice, then i will score more goals in soccer.
Set up. I would have two people who don't play soccer. One will be practicing for one hours every day, and the other will be practicing three hours every day. Based on my hypothesis, the person that is training three hours every day will score more goals than the person training one hour a day.
how do magnetic forces repel or attract? make it short and simple 25 points
Answers
hope this help!
A 9.0 g of a mysterious substance was heated from 23.0°C to 85.0°C using 127 J of heat. To identify the substance we need to know the specific heat capacity of it. What is the mysterious substance’s specific heat capacity?
Answers
Answer:
0.228 J/g°C
Explanation:
The specific heat capacity, denoted by c, can be calculated using the formula:
Q = m × c × ∆T
Where; Q = amount of heat
m = mass
c = specific heat capacity
∆T = change in temperature
In this question, m = 9.0g, Q = 127J, T1 = 23°C, T2 = 85°C
Using, Q = m × c × ∆T
127 = 9 × c × (85-23)
127 = 9 × c × 62
127 = 558c
c = 127/558
c = 0.2275
c = 0.228 J/g°C
an atom has 43 protons 55 neutrons and 44 electrons. what is the charge of the atom's nucleus?
Answers
what’s the empirical and molecular formula for a compound with 20.2% sodium, 37.6% sulfur, 42.2%oxygen and a molar mass of 682.8g/mol?
Answers
Answer:
Empirical formula: Na3S4O9
Molecular formula: Na6S8O18
Explanation:
1) To find the empirical formula, which is the simplest whole number ratio of each element that makes up this unknown compound, we first divide the portion of each element by it's respective atomic mass.
Na= 23g/mol, S= 32g/mol, O=16g/mol
Na = 20.2/23 = 0.878mol
S = 37.6/32 = 1.175mol
O = 42.2/16 = 2.638mol
Next, we divide each number of moles by the smallest value (0.878mol)
Na = 0.878/0.878 = 1
S = 1.175/0.878 = 1.34
O = 2.638/0.878 = 3.004
Next, we multiply each decimal fraction by 3 to make it whole no:
Na = 3
S= 4.02 ~ 4
O= 9.012 ~ 9
The simplest ratio between Na, S and O is 3:4:9 hence, the empirical formula is Na3S4O9
2) To get the molecular formula, we use the molecular weight of each element in the empirical ratio, and the overall molar mass of the compound i.e.
Molar mass of compound= 682.8g/mol
molecular weight of Na3S9O4 = (3 x 23g/mol) + (4 x 32 g/mol) + (9 x 16 g/mol)
= 69 + 128 + 144
= 341 g/mol
Hence, (Na3S4O9)n = 682.8g/mol
= (341)n = 682.8
n = 682.8/341
n = 2.002
n~ 2
Hence, molecular formula = (Na3S4O9)2
= Na6S8O18
The empirical and molecular formula are Na₃S₄O₉ and Na₆S₈O₁₈
respectively.
The empirical formula can be gotten by dividing each element by it's
respective atomic mass.
Na= 23g/mol, S= 32g/mol, O=16g/mol
Na = 20.2/23 = 0.878mol
S = 37.6/32 = 1.175mol
O = 42.2/16 = 2.638mol
Then divide each number of moles by the smallest value which in this case is 0.878mol.
Na = 0.878/0.878 = 1
S = 1.175/0.878 = 1.34
O = 2.638/0.878 = 3.004
Next, we multiply each decimal fraction by 3 to make it whole no:
Na = 3
S= 4.02 ~ 4
O= 9.012 ~ 9
The simplest ratio between Na, S and O is 3:4:9 hence, the empirical formula is Na₃S₄O₉
The molecular formula is calculated by multiplying the molecular weight of each element with empirical ratio to get overall molar mass of the compound
Molar mass of compound is given as 682.8g/mol
Molecular weight of Na₃S₉O₄ = (3 x 23g/mol) + (4 x 32 g/mol) + (9 x 16 g/mol)
= 69 + 128 + 144
= 341 g/mol
Hence, (Na3S4O9)n = 682.8g/mol
= (341)n = 682.8
n = 682.8/341
n = 2.002
n~ 2
Hence, molecular formula = (Na₃S₄O₉)²
= Na₆S₈O₁₈
Suppose you made 40 atoms of Highlinium and it has a
half life of 2 seconds. How many Highlinium atoms would you expect to be
left after 6 seconds?
Answers
Answer:
After 6sec 5 atoms will be left.
Explanation:
Given data:
Total atoms of Highlinium = 40
Half life = 2 sec
Atoms left after 6sec = ?
Solution:
First of all we will calculate the number of half lives passes during 6sec.
Number of half lives = Time elapsed/ half life
Number of half lives = 6 sec / 2sec
Number of half lives = 3
Now we will calculate the number of atoms left
At time zero = 40 atoms
At 1st half life = 40 atoms/2 = 20 atoms
At 2nd half life = 20 atoms/2 = 10 atoms
At 3rd half life = 10 atoms / 2 = 5 atoms
Thus, after 6sec 5 atoms will be left.
Which of the sun’s layers is called the sun’s furnace?
Answers
Answer:
The core of the sun
Explanation:
The core of the sun acts like a furnace. The sun's energy comes from nuclear fusion
An object is made from a material that is hard, shiny, and can be hammered into thin sheets.
Which of these is another likely property of the material?
1) it dissolves in water 2)I has a low boiling point. 3) it is a good conductor heat. 4) it’s density is less than that of water
Answers
Answer:
3) it is a good conductor heat.
Explanation:
An object is made from a material that is hard, shiny, and can be hammered into thin sheets. The aforementioned properties are those of a metal. Therefore, the other property of a metal is that, it is a good conductor of heat and even electricity because there valence (outer) electrons are delocalized. Some examples of chemical elements that are metals are iron, gold, sodium, silver, copper etc.
The halogens like to bond with what other group?
O Alkaline earth metals
Alkali metals
O Noble gases
O Transition metals
Answers
how does lithium change into a cation
Answers
Answer:
If it loses an electron it becomes a positive ion. Picture 1.8 Some atoms lose electrons and become positive ions. A lithium atom has 3 protons and 3 electrons. It can lose one of its electrons, making it an ion
Explanation:
Please answer this quick!
Answers
Answer:
A
Explanation:
Thy are all in the color blue.
P.s Click the Brainliest
chromium-58 is a(an)
Answers
Answer:
Element
Explanation:
Chromium (24th Element) has 24 protons and 24 electrons.
Chromium is a Transition Metal.
Chromium has a molar mass of 52.00 g/mol.
Chromium-58 has 34 neutrons, 24 protons, and 24 electrons.
What is a source of energy that is internal to the
earth systems?
A. Sun
B. Moon
C. Tides
D. Radioactive decay
E. All of the above
Answers
Answer: The answer is D - radioactive decay
Explanation: I took the test and got this question correct.
A source of energy that is internal to the Earth's systems is radioactive decay which is option D.
The source of energy that is internal to the earth's systems is radioactive decay.
Radioactive decay is a natural process in which unstable atomic nuclei release energy in the form of radiation. The decay of radioactive isotopes found in the Earth's crust and mantle produces this energy. It contributes to the Earth's internal heat and is important in many geological processes, including plate tectonics and volcanic activity. Radioactive decay, unlike external sources such as the Sun, Moon, and tides, is a source of energy that begins within the Earth itself.
Therefore, the correct option is option d
Learn more about Earth's internal energy here:
https://brainly.com/question/13152432
#SPJ 2