Answer:
b . Irradiated food is shown to not be radioactive.
Explanation:
If it can be proven that irradiated food is not radioactive, then it will effective dispute the idea that irradiated food are less safe to eat.
An irradiated food is one in which ionizing radiations have been employed to improve food quality. Thus, bacteria and other food spoilers can be exterminated from the food. Most irradiated food do not contain radiation and are fit for consumption.If it can be proven, that this is true, then it will challenge the idea that irradiated foods are not safe.
element x bonds with phosphate in a ratio of 3 ions of element x to 2 phosphate ions. what kind of ion does element x form?
Answer:
The kind of ion is X2+ ( where the ion is formed as a result of the loss of two valence electrons)
Explanation:
The ratio of ions of the element X to the phosphate ions is 3 to 2
So what we have as formula of these will be;
X3(PO4)2
Generally we have the phosphate ion formula as; PO4^3-
So for this formula above to be possible then the element x will have a formula of its ion X2+
Why is NCl3 not soluble in water?
Answer:
Explanation:
NCl3 does not dissolve in water because it is a nonpolar molecule which is different with water. NCl3 is nonpolar due to the difference in electronegativities between 3 atoms of Cl and 1 atom if N2.
Answer:
A polar solute dissolves into a polar solvent and a non-polar compound dissolves into a non-polar solvent, this rule is known as "like dissolves like".
What percentage of Carbon (C) is present in one molecule of
Dichlorodifluoromethane (CF2Cl2), commonly known as Freon, an anti-freezing agent
used in automobiles.
Please round everything to whole numbers for this question. Use the following
masses in your calculations:
C = 12
F = 19
Cl = 35
The percentage of Carbon (C) present in one molecule of
Dichlorodifluoromethane (CF₂Cl₂) : 10%
Further explanationProust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements
With this law, we can calculate how many grams an element is needed to make a compound with a certain mass, as desired
MW Dichlorodifluoromethane (CF₂Cl₂) :
=12+2.19+2.35=120 g/mol
[tex]\tt \%mass~C=\dfrac{12}{120}\times 100\%=10\%[/tex]
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Answer:
fsdafdsafdsafdsafdasfsagfd
Explanation:
I have a question, about trends in the periodic table. Mostly focusing on ionization energy. From going from right to left it increases as the atom's size decreases. Can someone explain why this happens? Like why does it increase as the size decreases Thank you.
The ground state electron configuration of As
Answer:
Arsenic atoms have 33 electrons and the shell structure is 2.8. The ground state electron configuration of ground state gaseous neutral arsenic is [Ar]. 3d10. 4s2.
Explanation:
Hydrogen bond is not formed by 1) oxygen 2) nitrogen 3) chlorine
PLEASE HELP!!!
Answer:
Input work is the work done on a machine as the input force acts through the input distance. This is in contrast to output work which is a force that is applied by the body or system to something else. Output work is the work done by a machine as the output force acts through the output distance.Jan 15, 2020 bahsgsh bvshgs d hg
describe a habitat of giraffe or an elephant(i prefer the giraffe tho, and please make it reasonable)
Answer: Savanna, Woodland, or Grassland.
Giraffes eat new shoots and leaves, their habitat needs to have a good supply of trees -- they flock towards acacia trees in particular. Giraffes use their extremely long legs, necks and tongues to browse mainly from the thorns on the acacia tree. The tongue and the inside of the mouth are lined with tough tissue that protects against the thorns.
A scientist observes rock masses that have moved past each other in opposite horizontal directions. Which feature does the scientist observe?
Answer: strike-slip fault
Explanation:
Answer:
C; strike split
Explanation:
1. What part of the human body has the same role as the power source in a computer?
2.What part of the human body has the same role as the keyboard or the mouse on a computer?
Answer:
The heart
Hand
Explanation:
The part of the human body that has the same role as the power source in a computer is the heart. A power source in a computer provides energy that powers the whole system.
The human heart provides the pumping action for the circulatory system. Just like current passes through wires in a computer by energy from the power source, the human heart pumps blood throughout the body in a like manner. Without the pumping action of the heart, the human body is dead.Also, keyboard and mouse are input devices. They are used to give instruction and perform certain tasks on the computer system.
The human body can also carryout tasks by using the hand. Objects are moved from one place to another just as you drag an icon using the mouse. We type word processors using information from the keyboard, also, we are able write using pen on paper.a balloon initially has 0.40 liters and a temperature of 20°C what will the volume of the balloon be after it heats to 250°C
Answer:
0.7L
Explanation:
Given parameters:
Initial volume V₁ = 0.4L
Initial temperature T₁ = 20°C = 20 + 273 = 293K
Final temperature = 250°C = 250 + 273 = 523K
Unknown:
Final volume V₂ = ?
Solution:
To solve this problem, we apply Charles's law.
It states that "the volume of a fixed mass of a gas varies directly as the absolute temperature if the pressure is constant".
mathematically;
[tex]\frac{V_{1} }{T_{1} } = \frac{V_{2} }{T_{2} }[/tex]
V and T are temperature values
1 and 2 are initial and final states;
Insert the parameters and solve;
[tex]\frac{0.4}{293}[/tex] = [tex]\frac{V_{2} }{523}[/tex]
V₂ = [tex]\frac{523 x 0.4}{293}[/tex] = 0.7L
Directions: Read through each scenario and identify the independent variable, dependent variable, and the control.
Question 1
1 pts
Rob is in charge of waxing the floor at the local mall. He wants to test a new brand of floor wax called
Squeaky Clean. Rob waxes 20 floor tiles with Squeaky Clean and 20 tiles with the original wax brand.
After one week he counts the number of scratches on the floor. What is the independent variable?
number of floor scratches
brand of floor wax
20 tiles with original brand wax
Answer:
The correct answer is - brand of floor wax.
Explanation:
The independent variable is the variable or the factor in an investigation which is manipulated or change in the experiment and affects the dependent variable and produces a various result.
In this investigation, there are different brands of the floor was are the independent variable as they are changed to see the effect on the scratches on the floor on 20 tiles for each brand.
What is radioisotope?
Answer:
An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Radioisotopes may occur in nature or be made in a laboratory. In medicine, they are used in imaging tests and in treatment.
Hope I could help!
Answer:
(RAY-dee-oh-I-suh-tope) An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Radioisotopes may occur in nature or be made in a laboratory. In medicine, they are used in imaging tests and in treatment. Also called radionuclide.
Explanation:
Can someone help? Ill give brainliest!
Directions: count each side of the reaction then Circle yes or no if it follows the law of conservation of mass
Answer:
It does follow the law of conservation of mass.
Explanation:
You start with 4 phosphorous atoms and 6 oxygen atoms, you end with 4 phosphorous atoms and 6 oxygen atoms.
Describe the process of evaporation condensation, and precipitation
Answer:
eva... water to gaseous foum .... condensation liquid to solid and perp ..... water that is falling out of the sky, this could be rain, drizzle, snow, sleet, hail or something rarer!Answer:
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, or hail. Condensation is the process by which water vapor in the air is changed into liquid water.
Explanation:
Momentum is mass times
A. acceleration
B. velocity
C. distance
B. velocity
This is the answer
For the water, what color is the oxygen molecule?
Answer:
red
1: The SCP/E-water molecule: oxygen atom (red color) and hydrogen atoms (white color).
Explanation:
which of the following explains why salt water is considered a mixture
Answer:
sal5 water = kaka
Explanation:
because i need points ty man
A group hikes from sea level to a mountain peak. Each letter in the diagram indicates a spot where the group stops to drinks boiling water. At Wich point in the hike does water have the highest point.
Answer:
oh my god i have learnt about this
Explanation:
Answer:
Point A
Explanation:
I dont know why but it was right on the test.
When propane is reacted in the presence of oxygen gas, the products of this combustion reaction are: A. CO + H2O B. CO2 + H2O C. C2H4 + H2O D. CH4 + H2O
Answer:
B. CO2 + H2O
Explanation:
Propane is an hydrocarbon as it contains only v=carbon and hydrogen atoms.
Whenever an hydrocarbon reacts with oxygen or undergoes a combustion reaction, two products are always formed only,
These two products are;
Carbon dioxide (CO2) and water (H2O)
This means the correct option is option B.
Which of these changes to a modern lifestyle would promote the
development of more-sustainable practices in the world food system?
O A. Switching from chicken to beef
B. Eating fewer processed foods
O C. Buying tropical fruits
D. Eating fresh vegetables year-round
Eating fewer processed foods would promote the development of more-sustainable practices in the world food system.
What are Processed food?
This is the food which has undergone some degree of alteration during preparation such addition of preservatives etc.
Eating less of it will ensure that more sustainable practices in the world food system are promoted.
Read more about Processed food here https://brainly.com/question/21201084
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Which element is not conserved in this unbalanced chemical equation?
2NaOH + H2S04 - NaSO4 + 2H20
Ο Α. Η
O B. S
O c. O
O D. Na
In the given unbalanced reaction, the number of sodium is not balanced. There must have two sodium in the product side also. The correct formula of sodium sulphate is Na₂SO₄.
What is mass conservation law?According to the law of conservation of mass, the total mass of a system is conserved. Thus, mass can neither be created nor be destroyed. Therefore, for a chemical reaction, the total mass in the product side must be equal to the total mass in the reactant side.
The balanced equation of a chemical reaction thus, obeying the mass conservation law where, each element have to be equal in number in both sides.
In the given reaction, the number of Na in reactant side is 2 and that in product side is 1 only. Thus total mass of sodium is not conserved. It can be corrected as Na₂SO₄ in the product side.
To find more on mass conservation, refer here:
https://brainly.com/question/13383562
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An isotope of Cesium -137 has a half-life of 30 years. If 1.0 g of Cesium – 137 disintegrates over a period of 60 years, how many grams of Cesium- 137 would remain?
Answer:
Explanation:
Radioactive decay follows the equation:
Ln [A] = -kt + ln [A]₀
Where [A] is amount of isotope after time t: Our incognite,
k is rate constant: ln 2 / Half-life = 0.0231 years⁻¹
t are 60 years
[A]₀ is initial amount of isotope: 1.0g
Replacing:
Ln [A] = -kt + ln [A]₀
Ln [A] = -0.0231 years⁻¹*60 years + ln 1.0g
ln [A] = -1.386
[A] = 0.25g
arrange the following in order of increasing mass . a. 16 water molecules b. 2 atoms of lead 3. 5.1*10^-23
Substance A dissociates 100% in water to produce H3O+ ions while substance B dissociates 25% in water to produce OH- ions. What can be determined from this information?
A:Substance A is a strong acid and substance B is a weak base
B:Substance A is a weak acid and substance B is a strong base
C:Substance A is a strong base and substance B is a weak acid
D:Substance A is a weak base and substance B is a strong acid
Answer:
A:Substance A is a strong acid and substance B is a weak base
Explanation:
From this information, we can conclude that substance A is a strong acid and substance B is a weak base.
A strong acid is one that ionizes completely in solution. Most strong acids are usually concentrated. 100% dissociation is a complete ionization.
A weak base ionizes slightly in an aqueous solution. 25% dissociation is weak ionization.
Answer:
a
Explanation:
Which type of stress causes fault-block mountains?
help asap
i have to get a good grade on this
the number of molecules in 7g nitrogen
Answer:
the number of molecules in 7g nitrogen
Ans) 7 gram of Nitrogen contains 1.5×10^23 molecules =1.5e+23
what does primary succession end with
help me plzzzzzzzz it helps a lot
Answer:
D
Explanation:
cracks from temperature changes is a type of physical weathering often known as freezing and thawing