Answers
Answer:
because it's has an additional electron. hydrogen is just made up of one proton
Related Questions
Calculate the density of a sample of metal that has a mass of 1668 g and takes up a volume of 186.2 cm
Answers
Answer:
8,95
Explanation:
Density is equal to mass/volume
[tex]D=\frac{m}{v} \\D= \frac{1668g}{186.2} \\D = \frac{8,95g}{cm^3} \\[/tex]
approximately
Curiosity:
Did you knew that is because of his low density that ships can fluctuate?
Despite their big mass, their volume are far greatter, so the Buoyancy Force acts heavily on them.
how many significant figures are in the number 0.04350 mm?
a. 6
b.5
c.4
d.3
I’m positive that its 4 or 3 or maybe 5?? idk
Answers
Answer:
Option c is correct = 4
Explanation:
Significant figures:
All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.
Zero between the non zero digits are consider significant like 104 consist of three significant figures.
The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.
In given measurement 0.04350 there are four significant number
4,3,5,0
These all are significant.
how many moles are in 23.4g?
Answers
General formula for conversion of mass(g) to mole(n) is mass(g)/molar mass of element or compound (g/mol)
__CH4+O2-->__CO2+__H2O
Answers
CH4 + 2O2 --> CO2 + 2H2O
On the reactant side you start with 1 carbon, 4 hydrogen, and 2 oxygen. On the product side you start with 1 carbon, 2 hydrogen, and 3 oxygen. In order to get them equal, you need to put 2 in front of the H2O which equals out the number of Hydrogen on both sides. But Now we must balance the Oxygens. Because of the H2O we now have 4 Oxygens on the product side and only 2 on the reactant. In order to balance this, we put a 2 in front of the O2 giving us 4 hydrogen on both sides, Balancing the equation
a solid has ___ shape and ___ volume can anyone tell me the answer
Answers
Answer:
fixed shape and a definite volume
Explanation:
Answer:
a solid has a definite shape and definte volume
Explanation:
What is the volume of the rock?
Answers
Answer:
8 mL
Explanation:
You read volume on a graduated cylinder by counting the number under the line on top of the liquid (minuscus).
Before the rock was added, the volume is 10 mL. After the rock was added, the volume is 18 mL. Subtract the two volumes to find the volume of the rock.
18 mL - 10 mL = 8 mL
How many atoms are there in 14.3 g of xenon?
Answers
Answer:
6.56 × 10²² atoms Xe
Explanation:
Step 1: Find conversions
Molar Mass Xe - 131.29 g/mol
Avagadro's Number: 6.022 × 10²³
Step 2: Use Dimensional Analysis
[tex]14.3 \hspace{3} g \hspace{3} Xe(\frac{1 \hspace{3} mol \hspace{3} Xe}{131.29 \hspace{3} g \hspace{3} Xe} )(\frac{6.022(10)^{23} \hspace{3} atoms \hspace{3} Xe}{1 \hspace{3} mol \hspace{3} Xe} )[/tex] = 6.55911 × 10²² atoms Xe
Step 3: Simplify
We have 3 sig figs.
6.55911 × 10²² atoms Xe ≈ 6.56 × 10²² atoms Xe
Which best describes the law of conservation of mass? The coefficients in front of the chemicals in the reactants should be based on the physical state of the products. Products in the form of gases are not considered a part of the total mass change from reactants to products. When reactants contain both a solid and a liquid, the solid counts toward the overall mass and the liquid does not. The mass of the reactants and products is equal and is not dependent on the physical state of the substances.
Answers
Answer:
D) The mass of the reactants and products is equal and is not dependent on the physical state of the substances.
Explanation:
I took the quiz on Edgenuity
The best description of law of conservation of mass is the mass of the reactants and products is equal and is not dependent on the physical state of the substances. Thus, option D is correct.
What is law of conservation of mass?
Law of conservation stats that the any closed in which mass or energy transfer is takes placed the sum of energy and mass before or after transfer is remain constant.The mass of the reactants and products is equal and is not dependent on the physical state of the substances.
It means that in terms of physics if any closed or open system if mass or energy transfer is takes place from the system the total energy i.e in system or surrounding the total energy will always constant. Law of conservation stats that the any closed in which mass or energy transfer is takes placed the sum of energy and mass before or after transfer is remain constant.
Therefore,the best description of law of conservation of mass is the mass of the reactants and products is equal and is not dependent on the physical state of the substances. Thus, option D is correct.
Learn more about law of conservation of mass here:
https://brainly.com/question/13383562
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20 POINTS HELP NEEDED !!!Find the mass of a rock that displaces from 10.5 ml to 12.4 ml, if the density of the rock is 5.8 g/ml. SHOW ALL WORK PLEASE!!!!
Answers
Answer:
The answer is 11.02 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
density = 5.8 g/ml
volume = final volume of water - initial volume of water
volume = 12.4 - 10.5 = 1.9 mL
The mass of the rock is
mass = 5.8 × 1.9
We have the final answer as
11.02 gHope this helps you
Answer:
110.2 g
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
Which surface has the least amount of friction?
Answers
Answer:
Smooth surface
Explanation:
I hope that helps
smooth surface OK please give me the brain list answer
What is scientific consensus?
O a new scientific idea that was confirmed by the original researcher
an idea that has been changed due to new information
O a general agreement among scientists about a scientific idea
the understanding that knowledge in a particular area can be uncertain
Answers
Answer:
it's C
Explanation:
got it right on EDG 2021
The scientific consensus is a general agreement among scientists about a scientific idea. The correct option is C.
What is a scientific idea?A scientific idea is the explanation or facts of science. It reveals the truth about the world. How the world works and the secrets of nature. It tells and gathers true information about the world.
The different aspects of life and the world are understood and studied by scientists. Different scientists work for different forms of life. The scientist's ideas change over the different evidence.
The generalized ideas of various scientists give and agree upon the different theories of the levels of science. The publication process and specialized field.
Thus, the correct option is C. a general agreement among scientists about a scientific idea.
To learn more about the scientific ideas, refer to the link:
https://brainly.com/question/18779762
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Calculate the value of 0.1394÷0.004 showing all workings
Answers
Answer:
34.85
Explanation:
In what type of reaction or process does heat flow into the system?
Answers
Answer:
through thermal energy
Audio and radio signals can be carried over electric wires and they are examples of ________ current. A) alternating B) direct C) pulsating D) variable
Answers
Answer:
Direct current!
Explanation:
Process of elimination, it isn't A, it isn't C, and it definitely isn't D
Answer:
A.) Alternating
Explanation:
Usatestprep
Element in the periodic table are arranged by
Answers
elements in the periodic table are arranged by the atomic number of the element
Answer:
The isotope carbon-14 has 6 protons and an atomic mass of 14. Carbon-14
Explanation:
What is the mass of an object with a density of 0.3456 g/cm3and a volume of 112.4 cm3?
Answers
Answer:
The answer is
38.85 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
density = 0.3456 g/cm³
volume = 112.4 cm³
The mass of the object is
mass = 0.3456 × 112.4 = 38.84544
We have the final answer as
38.85 gHope this helps you
How do you view failure? Is failure the end, or is failure an important lesson and motivator?
Answers
Answer:
Failure is a lesson
Explanation:
Without failure, we'd be less capable of compassion, empathy, kindness, and great achievement. It's through failure that we learn the greatest lessons that life could teach us.
I
A 5.29g piece of an unknown solid is placed in a graduated cylinder that initially contained 5.00mL of water, if
the water rises to 12.6mL, what is the density of this solid?
Answers
Answer:
about 0.7 g/mL
Explanation:
Density = mass ÷ volume
D = 5.29 g / (12.6 mL - 5.00 mL)
D = 5.29 g / 7.6 mL
D = 0.696052.... g/mL
D = about 0.7 g/mL
Where are the transition metals on the periodic table?
A. In the first column
B. In the second column
c. In two rows, separated from the rest of the table
D. In columns 3 - 12 in the center of the table
SUBMI
Answers
Answer:
D.
Explanation:
In columns 3 - 12 in the center of the table
An atom has 16 protons and 17 neutrons.
What is the chemical symbol for the atom?
A: 33S
B: 32Cl
C: 33Cl
D: 32S
Answers
Answer:
A: 33S
Explanation:
An atom has 16 protons & 17 neutrons. What is the chemical symbol for the atom? Consult the periodic table.
Answer:
the answer is A
Explanation:
i just took quiz and got 100%
Which elements in the periodic table are least likely to combine with other elements?
a. halogens
b. Nobel gases
c. alkaline earth metals
d. transition metals
Answers
Answer:
nobel gases
Explanation:
nobel gases elements in the periodic table are least likely to combine with other elements
If you have an initial water level in a graduated cylinder of 17 mL, and the final water level after placing a 2g aluminum piece in is 20 mL, what is the density of the aluminum in g/mL?
Formula:? Work:? Answer:?
Answers
Answer:
The answer is
0.67 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass of aluminum = 2 g
volume = final volume of water - initial volume of water
volume = 20 mL - 17 mL = 3 mL
The density is
[tex]density = \frac{2}{3} \\ = 0.6666666...[/tex]
We have the final answer as
0.67 g/mLHope this helps you
Answer:
0.67g/mL
Explanation:
The formula is [ d = m/v ] where m = mass and v = volume
Find the volume.
20 - 17 = 3
Find the density.
d = 2/3
d ≈ 0.67
Best of Luck!
Which type of cell is a rose thorn?
A)prokaryotic
B)eukaryotic
C)eukaryotic animal
D)chloroplastic
Answers
Answer: I think it is A
Explanation:
Explanation:
[tex]eukaryotic[/tex]
I will give Brainliest ...What mass of KBr is present in 75.0 mL of 0.250 M KBr solution?
Answers
Answer:
Mass of KBr present = 2.23 g
Explanation:
Number of moles of KBr present in 75.0 ml of 0.250 M solution of KBr is first determined
From the formula: molarity = number of moles/ volume (L);
Number of moles = molarity * volume (L)
Volume of solution in Litres = 75/1000 = 0.075
Number of mole = 0.250 * 0075 = 0.01875 moles
Mass = number of moles * molar mass
Molar mass of KBr = 119 g/mol
Mass = 0.01875 moles * 119 g/mol = 2.23 g
Describe what human Microbiome is: HELP ASP!!!
Answers
Answer:
The microbiome is defined as the collective genomes of the microbes (composed of bacteria, bacteriophage, fungi, protozoa and viruses) that live inside and on the human body. We have about 10 times as many microbial cells as human cells.
Explanation:
Hope this helps
Which part of the wave is changed when there is interference?
A. the amplitude
B. the crest
C. the trough
D. the wavelength
Answers
Answer:
A. the amplitude
Explanation:
Hopes this helps if not then dang.
pls help!! will give brainly
New evidence can lead to a change in scientific knowledge. (3 points) True False
Answers
Answer:
True
Explanation:
An explanation of an event that is based on repeated observations and experiments
is
a
O a. problem
O b. hypothesis
O c. theory
d. variable
Answers
10 pts
A pitcher throws a baseball with a velocity of 33 m/s. If the ball has a mass of 4 kg, how
much kinetic energy does the ball have?
Answers
Answer:
The answer is
2178 JExplanation:
The kinetic energy of an object given it's mass and velocity can be found by using the formula
[tex]KE = \frac{1}{2} m {v}^{2} \\ [/tex]
where
m is the mass
v is the velocity
From the question
m = 4 kg
v = 33 m/s
The kinetic energy is
[tex]KE = \frac{1}{2} \times 4 \times {33}^{2} \\ = 2 \times 1089 \\ = 2178 \: \: \: \: \: \: \: \: [/tex]
We have the final answer as
2178 JHope this helps you
Answer:
2,178J
Explanation:
The formula is [ KE = 1/2mv² ] where m = mass and v = velocity.
KE = 1/2(4)(33)²
KE = 1/2(4)(1089)
KE = 1/2(4356)
KE = 2178
Best of Luck!
A scientist is conducting an experiment to determine if eating chocolate ice cream helps students perform better on
science tests. She gives one group of students ice cream but does not give ice cream to another group of students.
She gives the same test out to all of the students and records their scores. In this experiment, the dependent variable
is the
Answers
Answer:
I think another group who didn't receive ice creams
