Answer: .132
Explanation:
Equation for the complete chemical reaction, ionic equation, ionic net equation
Answer:
an ionic equation is a chemical equation in which the electrolytes in aqueous solution are expressed as dissociated ions. ... Additionally, the net charge is the same on both sides of the equation.
Explanation:
So what you end up with is you always end up H+ plus OH- yields H2O, because HCl, and NaOH, since they're strong, they fully dissociate. So the Na+, and the Cl - are spectator ions. So with a strong acid and strong base, the net ion equation is always H+ plus OH- yields H2O.
Learning Task 4: Read the instructions found on the next page. Answer the
questions. Write your answers in your answer sheet..
Answer:
1. yes because it wants to go back to its original spot.
2. the poetical energy turns into kenotic energy and then moves back to the original position
3. it will go back to the original position just different angle
4. same thing as last time goes back to the original position but different angle because of how you are holding the ruler.
Explanation:
If her body were functioning correctly, this is what would happen with starch/glucose
What is the function of the Intercostal Muscle
Answer:
The intercostal muscles also stabilize the chest wall; in full inspiration they contract to prevent the intercostal spaces being sucked inwards by the negative intrathoracic pressure generated by contraction of the diaphragm.
Explanation:
Hope this helps! Brainliest is always appreciated :)
A chemistry student measures out 41 grams of sodium hydroxide, NaOH. They react it with an excess of hydrochloric acid, HCl, forming water and sodium chloride, NaCl. After boiling away the water and the HCl, they find the mass of the NaCl to be 25.5 grams. What is their percent yield? (Don't forget to write a balanced equation)
The nucleus of the eukaryotic cell is important because it
A. Controls the passing of substances through the cell membrane
B. Its rigidity controls the passing of substances through the cell wall
C. Contains DNA and controls the cell
For this question I think the answer is C.
It is the location of a cell's DNA
Which means it controls the cells
A student is doing an investigation on the movement of objects.
Why is it important for her to repeat the investigation several times?
32. A sample of potassium is composed of 23% K-39, 48% K-40 and the remainder K-41. Calculate the average mass
of the sample.
Answer:
40.06 amu.
Explanation:
From the question given above, the following data were obtained:
Isotope A (K-39)
Mass of A = 39 amu
Abundance of A = 23%
Isotope B (K-40)
Mass of B = 40 amu
Abundance of B = 48%
Isotope C (K-41)
Mass of C = 41 amu
Abundance of C = 100 – (23 + 48)
Abundance of C = 100 – 71
Abundance of C = 29%
Average mass =?
Average mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100]
= [(39 × 23)/100] + [(40 × 48)/100] + [(41 × 29)/100]
= 8.97 + 19.2 + 11.89
= 40.06 amu
Thus, the average mass of potassium is 40.06 amu
8
This wasp was viewed under a microscope with a 40x objective lens and a 10x
eyepiece lens.
What was the total magnification
help its for my assessment
25 points
Answer:
400x
Explanation:
magnification=magnification of objective lens*magnification of eyepiece lens
m=40*10
m=400x
What do you call a rock that cooled rapidly outside a
volcano?
Explanation:
intrusive rocks.....
.
Which of the following best describes the distribution of the world’s food supply? Select all that apply.
Still unevenly distributed leaving millions starving to death.
Quickly changing to be evenly distribute based on humanitarian efforts.
Slowly changing to be slightly more evenly distributed based on humanitarian efforts.
Evenly distributed throughout the population of the world now.
Answer: It would be A and C
Explanation: I did the test and got it right. Hope this helps!
Answer:
A + C
Explanation:
ur an amazing person have a great day :3
quote for today : ~dont trust anyone to much remeber the devil was once angle
What is the pattern in the periodic table for valence electrons and orbital shells of an element?
Answer:
Valence electrons increase as you go across the table (by periods)
Orbital Shells increase as you go down the table (rows)
Use the drop-down menus to select the names of the labeled structures.
A:
B:
C
Answer:
A:petal
B:pistil
C:stamen
Explanation:got it right on edu 2021
Answer:
C
A
B
Explanation: on ED about Identifying Earth’s Layers
Which is true of cell differentiation?
A. Tissues produce various stem cells.
B. Stem cells become different types of cells.
C. Unicellular organisms become multicellular
Answer:
B
Explanation:
When stem cells differentiate, they are different (almost like mutation).
Answer:
osifigkjgjcjfjrjrkrjrktktkkfkfkrkrkrktkgktkt
What name is given to this type of diagram
Answer:
There's no graph attached to the question
Which is the best prediction about the cell structures of muscle cells?
A.
Muscle cells have a large volume of cytoplasm so that the cell can easily change shape.
B.
Muscle cells contain a large number of mitochondria in order to provide more energy.
C.
Muscle cells do not have nuclei because they do not need to produce proteins.
D.
Muscle cells are surrounded by cell walls so that they are strong enough to move bones.
Answer:
is B
Explanation:
it isnt C or D so let's look at A and B so the answer is more likely going to be B because A your muscles cant change shape and C your muscles are protien and D humans and animals do not have cell walls that only have cell membrane
Answer:
No B. is incorrect, the REAL answer is actually C.
Explanation:
The main function of muscles is to move body parts by contracting, which requires a lot of energy. so C. is the only answer that concludes with this. The cell structure that produces energy is the mitochondrion.
Therefore, the best prediction is that muscle cells contain a large number of mitochondria in order to provide more energy.
So that means B. would be an assumable answer.
I hope this helps!
Read the list of elements given below.
F, Cl, Br, I
Which of the following about the elements is true?
A. All of them are highly reactive metals
B. All of them are highly reactive nonmetals
C. F and Cl are reactive nonmetals and Br and I are highly reactive metals
D. F and Cl are reactive metals and Br and I are highly reactive nonmetals
Is the gravity a black hole strong enough to keep light from escaping True or False
Answer:
The gravitational pull of a black hole is so strong that nothing, not even light, can escape once it gets too close. ... Moving at close to the speed of light, these particles ricochet off the event horizon and get hurled outward along the black hole's axis of rotation
(True)
Yo I rly need help plzzz
How much total heat is required to bring 25.0g of ice at ~2.00 C to a liquid at 50.0 C? Please
Answer:
q=m*c*•
Explanation:
•=50-2
m=25
c=4.18
q=?
use this
If 2.0 moles of magnesium hydroxide are present, how many moles of phosphoric acid, would be required for the reaction?
3Mg(OH)2 + 2H3PO4 Mg3(PO4)2 + 6H2O
Answer:
1.33
Explanation:
what does indicator that a chemical change has occurred?
Answer:
change in color or state of matter
Explanation:
hope i helped! ❤❤
There are three bulbs powered by a battery. What will happen if the middle light burns out.
Answer:
ABC
Explanation:
Please help me to calculate the volume of the rectangle above
Answer:
200m
Explanation:
V=L x W x H
V=5m x 4m x 10m= 200m
Answer:
volume is 200m³
Explanation:
The volume of a rectangle is length x width x height.
h=10m, w=4m, 5m
multiply together to get 200
volume is cubed so the unit is m³
Explain the ratio of calcium ions to chloride ions in CaCl2
Answer:
The ionic formula for Calcium Chloride is
C
a
C
l
2
Calcium is an Alkaline Earth Metal in the second column of the periodic table. This means that calcium has 2 valence electrons it readily gives away in order to seek the stability of the octet. This makes calcium a
C
a
+
2
cation.
Chlorine is a Halogen in the 17th column or
p
5
group.
Chlorine has 7 valence electrons. It needs one electron to make it stable at 8 electrons in its valence shells. This makes chlorine a
C
l
−
1
anion.
Ionic bonds form when the charges between the metal cation and non-metal anion are equal and opposite. This means that two
C
l
−
1
anions will balance with one
C
a
+
2
cation.
This makes the formula for calcium chloride,
C
a
C
l
2
.
I hope this is helpful.
An atom of sodium -23 na -23 had a net charge of +1 identify the number of protons, neutrons, and electrons in the atom then explain how you determined the number of each type of particle
Answer:
Protons = 11
Electrons = 10
Neutrons = 12
Explanation:
The atomic number of an element is the number of protons present in the nucleus of an atom of that element. A neutral atom of an element contains equal number of protons and electrons, therefore, the atomic number is also the electron number for a neutral atom.
The mass number is the sum of proton and neutrons in the nucleus of an atom of an element.
The atomic number of sodium-23, Na-23 is 11 while the mass number is 23.
An atom of sodium that has a net charge of +1 has lost an electron. Therefore, from the above information, the number of protons, neutrons and electrons present in this atom of sodium-23 is as follows:
Protons = 11
Electrons = 11 - 1
Electrons = 10
Neutrons = 23 - 11
Neutrons = 12
Which of the following DOES NOT belong to the group?
A.eyes
B.mouth
C.large intestine
D.stomach
Answer:
eyes
Explanation:
It is because the mouth, large intestine and stomach comes in the digestive system abd eyes doesn't.
HOPE THIS HELPS
Which pair could be genetic clones?
look at the photo
Answer:
cow female
Explanation:
If there are 20.0g of KOH available, how many grams Ca(OH)2 will form?
I got a weird answer, so can someone explain?
Answer:
can u send the qsn 4rm the start so tt I can help
The surface currents of Earth’s oceans are most likely created by which of the following?
Answer:
global wind patterns. the rotation of the Earth. the shape of the ocean basins.
Explanation: