Answer:
I hope this helps
Explanation:
Lewis symbols, which are also known as Lewis dot diagrams or electron dot diagrams, are diagrams that represent the valence electrons of an atom. Lewis structures, also known as Lewis dot structures or electron dot structures, are diagrams that represent the valence electrons of atoms within a molecule.
how many atoms are in SH2O4 ?
Answer:
≈0.56 moles or ≈3.37⋅ 10 23 atoms
Explanation:
Divide the numbers
2
2
+
2
2
=
4
5
2
2
+
2
2
=
4
x
5
22+22=54x
1
+
2
2
=
4
5
1
+
2
2
=
4
x
5
1+22=54x
2
Divide the numbers
again
1
+
2
2
=
4
5
1
+
2
2
=
4
x
5
1+22=54x
1
+
1
=
4
5
1
+
1
=
4
x
5
1+1=54x
3
Add the numbers
1
+
1
=
4
5
1
+
1
=
4
x
5
1+1=54x
2
=
4
5
2
=
4
x
5
2=54x
4
Multiply all terms by the same value to eliminate fraction denominators
2
=
4
5
2
=
4
x
5
2=54x
5
⋅
2
=
5
⋅
4
5
5
⋅
2
=
5
⋅
4
x
5
5⋅2=5⋅54x
5
Simplify
Multiply the numbers
Cancel multiplied terms that are in the denominator
1
0
=
4
10
=
4
x
10=4x
6
Divide both sides of the equation by the same term
7
Simplify
Show less
Solution
5
2
=
Answer:
This is not a question
Explanation:
no
Which is MOST likely to be considered “newsworthy”?
a study on which foods contain the most antioxidants, done five years ago
a study on which foods contain the most antioxidants, done two years ago
a study on which foods contain the most antioxidants, done last year
a study on which foods contain the most antioxidants, done last month
Which set of coefficients will balance this chemical equation?
__C2H4 + __02 - 2 CO2 + 2 H2O
A. 2,5
B. 1,3
C. 1, 2
D. 2,3
Answer:
Option B is correct = 1,3
Explanation:
Chemical equation:
C₂H₄ + O₂ → CO₂ + H₂O
Balanced chemical equation:
C₂H₄ + 3O₂ → 2CO₂ + 2H₂O
Step 1:
Left side Right side
C = 2 C = 1
H = 4 O = 3
O = 2 H = 2
Step 2:
C₂H₄ + O₂ → 2CO₂ + H₂O
Left side Right side
C = 2 C = 2
H = 4 O = 5
O = 2 H = 2
Step 3:
C₂H₄ + O₂ → 2CO₂ + 2H₂O
Left side Right side
C = 2 C = 2
H = 4 O = 6
O = 2 H = 4
Step 4:
C₂H₄ + 3O₂ → 2CO₂ + 2H₂O
Left side Right side
C = 2 C = 2
H = 4 O = 6
O = 6 H = 4
A is a physical environment where a species lives and
becomes adapted,
a Nest
b Niche
C Habitat
d None of the above
What is the correct name for LiF?
Answer:
Lithium Fluoride.
Explanation:I know science.
How can we determine the constants of an experiment?
Answer:
Identify the variables and constants in your experiment. In a controlled experi- ment, a is any factor that can change. Constants are all of the factors that are the same in both the experimental group and the control group.
A biopsy is performed to determine if the tumor is
Answer:
cancerous
Explanation:
The model of a neutral element is shown below. Which particle determines the reactivity of the element?
A
B
C
D
3
In which of the following states of matter are the particles very far apart so they can fill their containers?
A.
gases only
ОВ.
solids, liquids, and gases
solids and liquids only
C.
D.
solids only
Reset
Submit
Answer:
A. gases only
Explanation:
It is only in gases that the particles are very far apart so they can fill their contains.
There are four major states of matter which solid, liquid, gases and plasma.
Particles of a gas have very weak attractive forces between them. They do not have fixed volume nor shapeThey easily fill up any containers they are put into. Gases are compressible and moves randomly in a straight line. Liquids and solids do not fill up containers. Liquids although have weak forces but they are better attracted than gases. Solids have fixed and definite volume.So, option A is the perfect answer.
Add a neutron to create carbon-13. Is this isotope stable or radioactive?
6) What types of atomic orbitals are in the third principal energy
level?
C A sand p only
B. p and d only
CC. s, p, and d only
CD. s.p. d, and f
Answer:
Types of atomic orbitals present in the third principal energy are s, p and d only .
Explanation:
OPTION A-: s and p atomic orbitals - these two orbitals are present in second principal energy level. Therefore , the option is incorrect. OPTION B-: p and d only - This option is wrong as there is no such principal level energy where , s atomic orbital is absent .OPTION C-: s , p and d only -these orbitals are present in third principal energy level. The third major level of energy has one orbital, three orbitals of p, and five orbitals of d, each of which can contain up to 10 electrons. The third stage thus holds a maximum of 18 electrons. This option is correct .OPTION D-: s , p, d and f only -There is also a f sublevel at the fourth and higher stages, containing seven f orbitals, which can accommodate up to 14 electrons at most. Therefore, up to 32 electrons will hold the fourth level: 2 in the s orbital, 6 in the three p orbitals, 10 in the five d orbitals, and 14 in the seven f orbitals. This option is incorrect .Thus , the correct option is C (s , p and d only .)
Answer:
s, p, and d
Explanation:
Fill in the [?]: 12,341 us = [?] S
Is frying an egg a physical or a chemical change? Explain in detail
Answer:
Yes, a cooking egg is a chemical change! Water is evaporated from the egg and the egg changes composition. You might say that raw egg and water are the reactants and cooked egg and water vapor are the reactants.
Explanation:
Frying an egg is an example of a chemical change.
What is a chemical change?A chemical change refers to a kind of irreversible change. In this type of change, the element that undergoes a transformation cannot be returned to its original state.
This is the case with an egg which when fried cannot be returned to its original liquid state. So, unlike a physical change tha can be reversed, a chemical change is irreversible.
learn more about chemical changes here:
https://brainly.com/question/1222323
#SPJ6
Which is a property of barium (Ba)?
A. It does not conduct electricity.
B. It is brittle as a solid.
C. It rarely reacts with other elements.
D. It is very reactive.
Answer:
i think but i am not sure but according to me it mainly reacts yo non metals and i think its very reactive if my answer is wrong then comment below this question i will see it and i will get an opportunity to learn something new
Who performed the oil-drop experiment?
O A. Albert Einstein
B. Robert Millikan
O C. J. J. Thomson
D. Niels Bohr
Answer: Robert Millikan
Explanation: Robert Millikan was the first person to perform the oil drop experiment. It was done many centuries ago. Hope this helps you!
The mitochondria in a cell is most like a_______in its function
Answer: microbe Rickettsia prowazekii
Explanation:
Which is heavier? A pound of cotton candy or a pound of marbles
the density of granite is approximately 2.7 grams per cubic centimeter. what would be the approximate mass of a cube of granite 10.0 centimeters on a side
Given parameters:
Density = 2.7g/cm³
Length of the cube = 10cm
Unknown:
Mass of the cube = ?
Solution:
Density is the mass per unit volume of a substance.
Density = [tex]\frac{mass}{volume}[/tex]
Mass = density x volume
We need to find the volume of the cube;
Volume of the cube = L³
where L is the length of the cube;
Volume of the cube = 3³ = 27cm³
So, the mass of the granite = 2.7 x 27 = 72.9g
The granite has a mass of 72.9g
1. Or what is the steering of a vehicle an example?
i Pulley
ii. Wedge
iii Wheel and axle
iv. First class lever
Answer: Wheel and axle
Explanation:
Wheel and axle is the best answer. Technically that's not the primary part that steers a vehicle though. A pulley is in the engine and I've never heard of wedge and first class lever. The question isn't too clear, but yea, I would pick ii if I was in your spot.
The ________variable is the one the experimenter has chosen to investigate
dependent
control
experimental
independent
Which part of scientific design occurs when an experiment is conducted by more than one scientist to determine the validity of results?
A. replication
B. research
C. trials
D. variables
Answer: c
Explanation:
i think the answer is c
How many moles would 9.02 x 10^25 molecules of HCI equal?
Answer:
The answer is 149.83 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
N = 9.02 × 10^25 molecules of HCI
We have
[tex]n = \frac{9.02 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 149.83388704...[/tex]
We have the final answer as
149.83 molesHope this helps you
What are some of the Properties of Liquids.
Answer:
Liquids take on the shape of their container. The liquid state of matter is an intermediate phase between solid and gas. Like the particles of a solid, particles in a liquid are subject to intermolecular attraction; however, liquid particles have more space between them, so they are not fixed in position.
Explanation:
Are atoms the smallest particles we know about, or are there smaller ones?
Answer:
That we know about yes, but physicians still say there are more things out there. (we do not know about these yet tho)
Explanation:
how many neutrons would 34 16 S-2 have? A. 16 B. 18 C. 20 D. 32
Answer:
Explanation:
For
32
S
2
−
, there are 16 protons, 18 electrons, and 16 neutrons.
Explanation:
The atomic number,
Z
, specifies the number of protons, positively charged, massive, fundamental particles present in the sulfur nucleus. This number defines the sulfur atom as a sulfur atom (i.e if there were 17 protons, the atom would be chlorine).
For a neutral atom, if there are 16 positive nuclear charges, there must necessarily be 16 negatively charged particles, 16 electrons, whizzing about the nucleus.
Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus.
And thus finally, if we have the
32
S
2
−
ion, there are 18 electrons, 16 protons, and 16 neutrons.
An atom can be defined by its properties:
Atomic number (Z): It is equal to the number of protons present in a neutral atom.Mass number (A): It is equal to the sum of the number of protons and the number of neutrons.An isotope is represented by the general notation of [tex]_Z^A\textrm{X}[/tex], where X is the symbol of an element.
For the given isotopic specie, [tex]_{16}^{34}\textrm{S}^{-2}[/tex], mass number is 34 and atomic number is 16.
Number of neutrons = Mass number - Atomic number
Put the value in the above formula.
[tex]\Rightarrow \text{Number of neutrons}=34-16\\\\\Rightarrow \text{Number of neutrons}=18[/tex]
So, the correct option is (G).
Learn more about neutrons in an atom here: https://brainly.com/question/19958244
Can you guys please help me .. I don’t know we’re they go I only did one . Please help me this 6th grade work And I’m new to this pleaseee I will give you brainlest :( ? I’m only 11 .
Answer:
2.cohesion 3.adhesion 4. polar molecule 5. changing states 6. condensation 7.capilary action 8.adhesion 9. changing state 10. evaporation
will ya'll help me, please
Answer:
Either A or D
But i think D
hope this helps =3
sorry if im wrong
How much heat is absorbed when 500 g of
water, c = 4.184 J/g°C, goes from 25.0 °C to
35.0 °C?
Answer:
Assume that the coffee has the same density, 0.997 g/mL ... One liter of water has a mass of 1 kg and a specific heat of 4.184 J/(g °C).
Explanation:
Why do you think properties of materials used would be considered a constraint?
Answer:
For a material to be considered as building material, it should have required engineering properties suitable for construction works. These properties of building materials are responsible for its quality and capacity and helps to decide applications of these material. Such properties of building materials are categorized as follows. 1. Physical properties 2. Mechanical properties 3. Chemical properties 4. Electrical properties 5. Magnetic properties 6. Thermal properties
Explanation:
