Answer: Thermogenesis:Your body's muscles, organs, and brain produce heat in a variety of ways. For example, muscles can produce heat by shivering. Hormonal thermogenesis: Your thyroid gland releases hormones to increase your metabolism. This increases the energy your body creates and the amount of heat it produces.
Explanation:
True or False Chromium- 63 has 39 neutrons
Answer:
false
Explanation:
Name the following Compound: CrF2
Chromium(II) fluoride is the name given to the substance CrF2. In this compound, fluorine (F) is present as fluoride anion while chromium (Cr) is present in +2 oxidation state.
The compound contains two fluoride ions, as indicated by the number prefix "di-" before the element symbol F. An inorganic substance called chromium(II) fluoride crystallizes into a solid. It has a crystal structure that mirrors its atomic arrangement and is composed of fluoride anions and chromium cations. Chromium(II) fluoride is useful in many different industries. It serves as a catalyst in some chemical reactions and as a precursor in the manufacture of other chromium compounds.
Learn more about Chromium(II) fluoride, here:
https://brainly.com/question/21624719
#SPJ6
9701 s16_qp_12.pdf - Adobe Reader
Edit View Window Help
a Open
Tool
Fill B. Sign
Comment
143%
9
In the treatment of domestic water supplies, chlorine is added to the water to form HCIO.
Cl2(aq) + H2O(1) ►
H(aq) + Cl(aq) + HCIO(aq)
The HCIO reacts further to give CIO ions.
HCIO(aq) + H2O(l) 7H30*(aq) + CIO (aq)
Both HCIO and C10 kill bacteria by oxidation.
What is the change in oxidation number of chlorine when forming the Cio-ion from aqueous
chlorine?
B 0
D
A-1
C +1
+2
9701/12/M/J/16
© UCLES 2016
The change in oxidation number = +1
Further explanationReaction 1
Cl₂(aq) + H₂O(I) → H⁺(aq) + Cl⁻(aq) + HClO(aq)
Reaction 2
HClO(aq) + H₂O(I) → H₃O⁺(aq) + ClO⁻(aq)
The change in oxidation number of chlorine :
From Cl₂ to ClO⁻
oxidation number Cl₂=0
oxidation number Cl in ClO⁻
[tex]\tt Cl+(-2)=-1\\\\Cl=+1[/tex]
So the change : +1
How could a synthetic material such as Acegram affect society?
Explanation:
Synthetic fiber or synthetic fibre (in British English; see spelling differences) are fibers made by humans through chemical synthesis, as opposed to natural fibers that are directly derived from living organisms. They are the result of extensive research by scientists to improve upon naturally occurring animal and plant fibers. In general, synthetic fibers are created by extruding fiber-forming materials through spinnerets, forming a fiber. These are called synthetic or artificial fibers. Synthetic fibers are created by a process known as polymerization, which involves combining monomers to make a long chain or polymer. The word polymer comes from a Greek prefix "poly" which means "many" and suffix "mer" which means "single units". (Note: each single unit of a polymer is called a monomer). There are two types of polymerization: linear polymerization and cross-linked polymerization.
Synthetic material are madeup of monomers and long chain of monomers are known as polymers. The process is known as polymerization and the synthetic material are turned as microplastic which takes a long period of time to decompose. By this way the synthetic materials are very harmful for the society.
What is synthetic material?Synthetic materials are microplastic pollution and madeup up of polymers which is a long chain of polymers and the process is known as polymerization.
The synthetic materials are often converts into microplastic that takes a long period of time to decompose and they are also responsible for generation of greenhouse gases.The synthetic material which is popularly known is nylon which is very tough to recycle.
Therefore,synthetic material are turned as microplastic which takes a long period of time to decompose. By this way the synthetic materials are very harmful for the society.
Learn more about synthetic material here:
https://brainly.com/question/24357817
#SPJ2
Can somebody plz answer both questions correct!!! Only answer in 1-2 sentences.. that’s fine :)
(WILL MARK BRAINLIEST) will appreciate it thanks!
Answer:
a chemical change is usually an irreversible chemical reaction. an example of this is rusting.
a physical change is usually visible while a chemical change isn't. also, a chemical change is irreversible while a physical change is.
Explanation:
Ср Substance Aluminum Calcium Water Potassium Zinc Cp 0.895 J/g^ C 0.650 J/g ° 4.184 J/g^ C 0.750 J/g^ C 0.388J / (g ^ 0) * C Substance Lead Zinc Iron Tin Ср 0.160 J/g^ C 0.390 J/ g °C 0.444 J/g^ C 1227 J/g^ C Substance Copper Magnesium Styrofoam Lithium 0.387 J/g^ C 1.020 J/g^ C 1.300 J/g^ C 3.560 j/g^ C
Answer:
Hddhdhrvssj83hdi
Explanation:
Yee8373hes7
That's the question right
STATES THAT FOR AN ATOM IN THE GROUND STATE, THE NUMBER OF UNPAIRED ELECTRONS IS THE MAXIMUM POSSIBLE AND THESE UNPAIRED ELECTRONS HAE THE SAME SPIN
Answer:
Hund's rule
Explanation:
Hund's rule states that for an atom in the ground state, the number of unpaired electrons is the maximum possible and these unpaired electrons have the same spin.
I will clearly illustrate this using the ground state of the nitrogen atom. Nitrogen atom contains seven electrons. Its electronic configuration is; 1s2 2s2 2px1 2py1 2pz1.
Notice that the number of unpaired electrons in this configuration is maximum and they are all expected to possess the same spin in accordance with Hund's rule .
Which has the greater mass, 1 liter of water or I liter of gasoline? The density of water is 1.00 g/mL and that of gasoline is approximately 0.68 g/mL.
Answer:
Water
Explanation:
Gas= 0.689/ml x 1000 ml = 680 g
Water= 1/ml x 1000 ml = 1000 g (grater)
1 liter of water would have greater mass than the I liter of gasoline if the density of water is 1.00 grams/milliliters and that of gasoline is approximately 0.68 grams/milliliters.
What is density?It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.
By using the above formula for density
ρ = mass / volume
As given in the problem we have to find which has the greater mass, 1 liter of water or I liter of gasoline if The density of water is 1.00 g/mL and that of gasoline is approximately 0.68 g/mL
1 Litre = 1000 milliliter
1 liter of water = 1000 milliliter
mass of 1 liter of water = density of water ×volume of water
= 1.00 grams/milliliters×1000 milliliter
=1000 grams
Similarly;y for the gasoline ,
1 liter of gasoline = 1000 milliliter
mass of 1 liter of gasoline = density of gasoline ×volume of gasoline
= 0.68 grams/milliliters×1000 milliliter
=680 grams
Thus we calculated that 1 liter of water would have a mass of 1000 grams while the I liter of gasoline has mass of 680 grams.
Learn more about density from here
brainly.com/question/15164682
#SPJ6
What we call the factor a scientist
changes to observe its effects?
Can somebody plz answer this question only in 1-2 sentences! That would be great thanks so much :)
(WILL MARK BRAINLIEST)
Pure substances are substances which are homogenous in nature. They either consists of atoms of 1 kind or molecules of 1 kind. Atoms are seen in elements, where as molecules are seen in compounds like Acids, Bases, etc.
They mostly have fixed properties like boiling and melting points and are uniform in nature. :D
The elements sodium and chlorine react to form sodium chloride. Does sodium chloride retain any of the characteristic properties of either sodium or chlorine? Explain your answer.
Answer:
No
Explanation:
during chemical change, a new product is formed with entirely different properties with the element.
that's why water does not behave like hydrogen or oxygen but like water.
please mark brainliest
Here, we are required to determine of the Sodium chloride formed from the reaction of sodium and chlorine retain any of the characteristic properties of either sodium or chlorine.
The Sodium chloride formed from the reaction of sodium and Chlorine does not retain any of the characteristic properties of either sodium or chlorine.The reaction between sodium and chlorine to form Sodium chloride is a chemical change.
A Chemical change is one which is characterized by the formation of a new substance upon the reaction between a substance and another, alternatively, chemical decomposition into two or more different substances can also be termed a chemical change. These processes are not reversible except by means of further chemical reactions and the reactants and products have different characteristic properties.Read more:
https://brainly.com/question/18188845
can u help me pls.
Answer:
its g :)
Explanation:
Which of the following statements about elements is not true?
A. Elements contain equal numbers of protons and electrons.
B. Elements contain equal numbers of neutrons and electrons.
C. Elements contain protons and neutrons in their nucleus.
D. Elements contain electrons that orbit around the nucleus.
Answer:
Option A is not true
Explanation:
Could you please follow me and mark me as the brainliest answer
According to the statements of your question, the answer is B: elements contain equal numbers of neutrons and electrons.
To find the correct answer, we must evaluate each statement.
A. Elements contain equal numbers of protons and electrons
It is correct. In a neutral atom, the number of protons and electrons is the same. When an atom gain or lose electrons, the number of electrons is bigger (the atoms gain electrons) or lower (the atoms lose electrons) than the number of protons.
B. Elements contain an equal number of neutrons and electrons.
It is false. The nucleus of an atom is composed of neutrons and protons, where the atomic mass is given by:
[tex] A = Z + N [/tex]
Where:
Z: is the number of protons = atomic number
N: is the number of neutrons
The difference between the numbers of neutrons, protons, and electrons is evidenced in the so-called isotopes. These are atoms of the same element that have the same number of protons (and hence the same number of electrons if the atom is neutral) and a different number of neutrons in the nucleus.
An example is the hydrogen element, whose isotopes are protium (¹H), deuterium (²H), and tritium (³H). In all of them, the number of protons and electrons is the same (equal to 1), the number of neutrons is 0, 1, and 2, respectively, and the atomic masses are 1, 2, and 3, respectively.
C. Elements contain protons and neutrons in their nucleus.
It is correct. According to Rutherford's atomic model, the nucleus of an atom is composed of protons and neutrons with electrons moving around the nucleus.
D. Elements contain electrons that orbit around the nucleus.
It is correct. As we said earlier, Rutherford's atomic model states that negatively charged electrons move in circular paths around a positively charged nucleus. Later, Bohr proposed an atomic model based on circular paths with discrete energy values.
You can find more about the atomic model here:
https://brainly.com/question/1853483?referrer=searchResultshttps://brainly.com/question/1286022?referrer=searchResultshttps://brainly.com/question/2031894?referrer=searchResultsI hope it helps you!
Please help my teacher is rushing me
I only need help on the first one. Please help me
Answer:
No, it is not an example of a mutation.
Explanation:
Mutations occur in the chromosomes of the organism, in this case the fly. A mutation is a permanent alteration in the DNA of the fly. Therefore, if the fly were to have purple wings when it was born then it would be a mutation. However, in this case we dyed the wings of the fly purple. This does not alter or change the DNA in any way to cause a mutation.
Hope this helps!!
- Kay
What type of bond would be expected between Mg and Ti?
hydrogen bond
ionic bond
covalent bond
metallic bond
Answer:
Covalent
Explanation:
Titanium and its first-nearest boron atoms form a strong covalent bond, so TiB2 has high melting point, hardness and chemical stability. Titanium atom releases two electrons to form Ti 2 + ions, and a boron atom gets one electron to come into B- ion
2) In a calorimetry experiment, 70.0 g of a substance was heated to
270.00 degrees Celsius and then placed in 3500.0 g of water. The water
bath's starting temperature was 15.00 degrees Celsius. If the substance's
listed specific heat is 0.890 J/gC, predict the temperature at thermal
equilibrium. *
onlar
The temperature at thermal equilibrium : 16.1 °C
Further explanationQ absorbed = Q released
Heat can be formulated :
Q = m.c.Δt
c= specific heat, J/g°C
Δt = temperature different, C°
m= mass, g
Q water=Q substance
[tex]\tt 3500\times 4.18\times (t_2-15)=70\times 0.89\times (270-t_2)\\\\14630(t_2-15)=62.3(270-t_2)\\\\14630t_2-219450=16821-62.3t_2\\\\14692.3t_2=236271\\\\t_2=16.1^oC[/tex]
why are lab rules important
Answer:
if we do not have lab rules then something could go wrong like we could die or like what happened right now CORONAVIRUS that is why lab rules are so important to prevent things like this from happening
A compound is 21.6% Mg, 21.4% C, and 57.0% O. What is the empirical formula of the compound?
Answer:
Compound x = [tex] MgC_{2}O_{4}[/tex]
Explanation:
Let the compound be x
Assuming we have a 100g of compound x
Given the following data;
Magnesium, Mg = 21.6% = 21.6g
Carbon, C = 21.4% = 21.4g
Oxygen, O = 57.0% = 57.0g
Now, we would find the amount of moles for each element.
Atomic mass of Mg = 24.30g
Atomic mass of C = 12.01g
Atomic mass of O = 16.00g
Amount of moles for Mg;
21.6*(1/24.30) = 0.89mol
Amount of moles for C;
21.4*(1/12.01) = 1.78mol
Amount of moles for O;
57.0*(1/16.00) = 3.56mol
We then divide by the smallest to find the ratio;
0.89/0.89 = 1 Mol of Mg
1.78/0.89 = 2 Mol of C
3.56/0.89 = 4 Mol of O
Therefore, the ratio of Mg, C and O is 1:2:4.
Compound x = [tex] MgC_{2}O_{4}[/tex]
Hence, the empirical formula of the compound is [tex] MgC_{2}O_{4}[/tex]
B.Read the problem and answer the question that follow
Annalyn weighs 45.3 kg. Roby is 2.56 kg lighter than Annalyn. Together with Cecille, the three of them weigh 150.09 kg. How much does Cecille weigh?
6.What are the given facts in the problem?
7.Are there hidden questions? What are they?
8.What operations will use to solve the problem?
9.What is the solution yo the problem?
10.How will you check if your answer makes sense?
Answer: See explanation
Explanation:
Annalyn weighs 45.3 kg.
Roby is 2.56 kg lighter than Annalyn. This means that the weight of Roby will be:
= 45.3kg - 2.56kg
= 42.74kg
Together with Cecille, the three of them weigh 150.09 kg. Cecille weight will be:
45.3kg + 42.74kg + Cecille = 150.09kg
88.04kg + Cecille = 150.09kg
Cecille = 150.09kg - 88.04kg
Cecille weight = 62.05kg
To check of my answer is correct, I'll add all their ages together. This will be:
= 45.3kg + 42.74kg + 62.05kg
= 150.09kg
Which of these sources is most likely to be credible when it comes to information on the advantages and disadvantages of using plastics?
a catalog of plastic products
a company trying to sell plastic products
a group of scientists studying plastic products
a group of activists against using plastic products
Answer:
C
Explanation:
Hope This Helps :)
Answer:
C. a group of scientists studying plastic products
Explanation:
What is the best description of the paths of S waves and P waves? S waves travel through solids or very dense, glassy liquids. P waves travel through solids, liquids, and gasses. S waves travel through solids, liquids, and gasses. P waves travel through solids or very dense, glassy liquids. S waves travel through Earth's interior. P waves travel along the surface of Earth's crust. S waves travel along the surface of Earth's crust. P waves travel through Earth's interior.
Answer: S waves travel through solids or very dense, glassy liquids. P waves travel through solids liquids and gasses
Explanation:
I took the test, hope this helps!!
define equivalent weight of an element
I WILL GIVE BRAINLIEST!!!!!!!!
Why is cold air is drier than warm air?
a.) Cold air is drier because it cannot hold any water.
b.) Cold air is drier because it is too dense.
c.) Cold air is drier because there is less room for water molecules.
d.) Cold air is drier because the water molecules are more likely to condense to a liquid.
Answer:
D.) Cold air is drier because the water molecules are more likely to condense to a liquid.
Explanation:
This was the answer on my course
the new substances that are created in chemical reactions are called the _________.
Answer:
product
Explanation:
Answer:
products
Explanation:
What feature of New York is located about 44°N, 74°W?
Answer:
Adiroak is rhe answere
How is energy and gravity related to speed?
Answer:
In classical theories of gravitation, the changes in a gravitational field propagate. A change in the distribution of energy and momentum of matter results in subsequent alteration, at a distance, of the gravitational field which it produces.
Explanation:
What do the results tell you about your hypothesis(es)? How do the data support your claim above?
Answer: It tells you if your hyposthesis was incorrect or correct from the data. The data supports this because you tested and got your results correctly which will help you to form a hypothesis.
Explanation:
Answer:
It tells you if your hyposthesis was incorrect or correct from the data. The data supports this because you tested and got your results correctly which will help you to form a hypothesis.
Explanation: its right trust me
how are metals and nonmetals similar
Answer:
As compared to metals, they have low density and will melt at low temperatures. The shape of nonmetals cannot be changed easily because they are brittle and will break. Elements that have properties of both metals and nonmetals are called metalloids. They can be shiny or dull and their shape is easily changed.
Explanation:
3. What is the definition of acceleration?
The change in velocity multiplied by the time of change
The change in speed
The change in velocity
The change in velocity divided by the time during which the change occurs
Answer:
D. The change in velocity divided by the time during which the change occurs.
Explanation: I took the quiz on Accelerate and it was correct
Answer:
D. The change in velocity divided by the time during which the change occurs.
Explanation:
