Answer:
About 36%
Explanation:
Which group on the periodic table is an atom with 5 valence electrons?
Answer: In the Nitrogen family
Explanation:
Other elements in the family are: phosphorus, arsenic, antimony, and bismuth.
Answer:
5A
Explanation:
list six molecules in the reactions in the table & six ionic compounds in the reactions in the table above.
Explanation:
Ionic Compounds: These are compounds that contain ionic bonds. Generally, they are compounds that consists of a metal bonded to a nonmetal. Examples includes;
- CaO
- AgCl
- KCl
- CaI₂
- AgNO₃
- KClO₃
Molecules: They typically contain the covalent bonds. Generally, they are non metals bonded to each other.
Examples Includes;
- H₂
- C₂H₄
- N₂
- NH₃
- Cl₂
- I₂
Carbon exists in many forms on Earth. The diagram below shows part of the carbon cycle. What is happening in Step 1? *
1 point
Captionless Image
Animals are decomposing and releasing carbon into the soil.
Animals are breaking down organic molecules and releasing carbon dioxide into the atmosphere.
Animals are releasing energy into the environment and storing carbon.
Animals are converting carbon dioxide from the atmosphere to oxygen.
The first step of carbon cycle is animals are breaking down organic molecules and releasing carbon dioxide into the atmosphere.
What is a carbon cycle?Carbon cycle completes into four steps: photosynthesis, decomposition, respiration, and combustion.
In the first step, carbon enter the environment by respiration, and in the second step, carbon dioxide is consumed by plants.
Thus, the correct option is B.
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Bar Magnet Number
(B)
Location of Magnet
(Find 3 separate
locations where the
magnet number is
high, medium and low)
Bar Magnet
G
Magnetic (B) Field
B
5.26 G
Bx
3.20 G
G
Ву
4.17 G
52.52 0
Answer:
tell me how you want
this done?
Explanation:
Study this chemical reaction: 2Fe + 3CuCl2 = 2FeCl3 +3Cu Then, write balanced half-reactions describing the oxidation and reduction that happen in this reaction.
Oxidation half equation; 2Fe^2+ ----> 2Fe^3+ + 6e
Reduction half equation; 3Cu^2+ + 6e ---->3Cu
What is an oxidation and a reduction reaction?An oxidation-reduction (redox) reaction is a type of chemical reaction that involves the transfer of electrons between two species. Oxidation refers to the loss of electrons by a substance, while reduction refers to the gain of electrons by a substance.
Redox reactions are important in many chemical and biological processes, such as cellular respiration, photosynthesis, corrosion, and combustion. They can also be used in industrial processes, such as electroplating, battery operation, and chemical synthesis.
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Which amendment protects an accused person's right to remain silent?
O Second
O Eight
O Tenth
O Fifth
?
Answer:
Fifth trust me
Explanation:
What makes something a science
Answer:
Math like Science is Math combined with the calculations and all that stuff so
Explanation:
Scientific methodology includes the following: Objective observation: Measurement and data (possibly although not necessarily using mathematics as a tool)
how is a compound different from mixtures
Answer: a compound is a substance that is made up of more than one type of atoms bonded together, mixtures are a mix of multiple elements or compounds which haven't bonded together.
Explanation:
Objects can be charged when electrons move from one object to another by direct contact 1.Charging by conduction (contact) 2.Charging by conduction (contact), , 3.Charging by friction 4.Static electricity charging by induction
Answer:
Charging by conduction (contact)
Static electricity charging by induction
Explanation:
A body can be charged when another body is made to touch it such that charges are transferred from a charged body to an uncharged body. This is known as charging by contact.
A body can also be charged by induction. In this case, a charged body is only brought near an uncharged body without really touching the uncharged body. Charges are transferred without physical contact of the bodies.
Answer:
the one above is correct
Explanation:
-no need-
pls help 6th grade science
Answer: car b
Explanation:
Using the partial periodic table, which statement is correct?
*Oxygen (O) has more protons than chlorine (Cl).
*Iron (Fe) has more protons than silver (Ag).
*Sodium (Na) has more protons than carbon (C).
*Hydrogen (H) has more protons than helium (He).
Answer:
Sodium (Na) has more protons than carbon (C).
hope that helps!
Find the mass of 5 mol of NaOH.
(I need the answer in the next few minutes with work)
Answer:
199.985 or 200 g NaOH
Explanation:
Not sure if you want an explanation or not but take the 5 mol/ 1 mol NaOH and multiply by molar mass of NaOH which is 39.997/40.
what did mendel know of dna genes and alleles
what is the element (periodic table of elements) of an m&m
Answer:
Explanation:
There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons. Period 1 has only two elements (hydrogen and helium), while periods 2 and 3 have 8 elements.
A patient needs to take 875mg twice daily The pills in the bottle are each 250mg How many pills does she wants to take 875mg
Answer:
[tex]3.5[/tex] pill need to taken for completing dosage of [tex]875[/tex] mg
Explanation:
Total dosage of medicine to be taken in a day
[tex]= 2 * 875 \\= 1750[/tex]mg
Total weight of one pill [tex]= 250[/tex] mg
Number of pills required is equal to total dosage of medicine divided by the weight of one pill.
Hence,
Number of pills
[tex]= \frac{875}{250} \\= \frac{175}{50} \\= \frac{35}{10} \\= 3.5[/tex]
3. Color is a chemical property of a pure substance. From your observations of the color changes in the permanganate oxidation of benzaldehyde, make some deductions about the number of chemical species involved and if the organic compounds or the inorganic compounds are responsible for the colors observed.
Answer:
See explanation
Explanation:
We know that in the presence of strong oxidizing agents such as permanganate , aldehydes are oxidized. This oxidation is often accompanied by a colour change.
The colour change in the permanganate oxidation of benzaldehyde is caused by the inorganic permangate. The colour changes from purple to colourless because Mn^7+ is reduced to Mn^2+.
The benzaldehyde is readily oxidized to benzoic acid in the presence of permanganate.
Does anyone know this ?Please I need help
Explanation:
Entropy refers to the degree of disorderliness of system. Basically it refers to how random a system is.
Gong through the options.
A. The phase change is from solid to liquid. Liquid has a greater degree of disorderliness compared to solid hence entropy is increasing.
B. The phase change is from solid to gas. Gas particles has a greater degree of disorderliness compared to solid hence entropy is increasing.
C. The phase change is from aqueous to liquid. Aqueous solutions has a greater degree of disorderliness compared to liquid hence entropy is decreasing.
D. The reactant side has; solid + gas. In the product side, there is only gas. The product side has a greater degree of disorderliness hence the entropy is increasing.
E. The entropy of the product is greater than the entropy of the reactants hence entropy is increasing.
F. The phase change is from aqueous to solid. Aqueous solutions has a greater degree of disorderliness compared to solid hence entropy is decreasing.
Solid iron(II) sulfide reacts with aqueous hydrochloric acid to produce aqueous iron(II) chloride and hydrogen sulfide gas . Write a balanced chemical equation for this reaction.
A balanced chemical equation for this reaction :
FeS(s)+2HCl(aq)→FeCl2(aq)+ H2S(g)
Further explanationGiven
Word equation
Required
Balanced equation
Solution
The chemical equation can be expressed in terms of:
word equation skeleton equation balanced equationSkeleton equation
FeS(s)+ HCl(aq) --> FeCl2 (aq) + H2S (g)
Balanced equation
FeS(s)+2HCl(aq)→FeCl2(aq)+ H2S(g)
Summarize how you would go about calculating the grams of product given the grams of reactant you start with.
hi please help, what is the correct formula for zinc nitrate?
A. ZnNO3
B. Zn, 2, N, 3
C. Zn(NO3)2
Answer:
The answer is (c) Zn(No3)2
Explanation:
Because we know the cation of zinc is+2 and whereas nitrate is anion, -1.
how many elements are in 4K2CO3
Answer: 3 elements
Explanation:
They are
K for Potassium, C for Calcium and O for Oxygen
Why does Play-Doh taste salty?
Pls my science teacher wants an answer so pls answer ASAP i need an explaination
Answer:
It's made of salt
Explanation:
The recipe has salt as an ingredient
Answer:
playdoh is literally made of salt. thats why it tastes salty
Explanation:
What is the percent by mass of calcium in calcium carbonate,
CaCO3?
(Molar mass of CaCO3 = 100.09 g/mol)
%
What is the percent by mass of calcium in calcium carbonate, CaCO3? (Molar mass of CaCO3 = 100.09 g/mol)
Answer: 40.04 percent
The percent by mass of calcium in calcium carbonate ([tex]CaCO_{3}[/tex]) is approximately 40.04%.
To calculate the percent by mass of calcium in calcium carbonate ([tex]CaCO_{3}[/tex]), we need to determine the molar mass of calcium (Ca) and the molar mass of calcium carbonate ([tex]CaCO_{3}[/tex]), and then use the following formula:
Percent by mass of calcium = (Molar mass of calcium / Molar mass of calcium carbonate) x 100
Given:
Molar mass of [tex]CaCO_{3}[/tex] = 100.09 g/mol
Now, let's calculate the molar mass of calcium (Ca):
The molar mass of calcium (Ca) is 40.08 g/mol.
Plugging in the values into the formula, we get:
Percent by mass of calcium = (40.08 g/mol / 100.09 g/mol) x 100
= 0.4004 x 100
= 40.04%
Therefore, the percent by mass of calcium in calcium carbonate ([tex]CaCO_{3}[/tex]) is approximately 40.04%.
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What formula gives the ratio of elements?
Answer:
In a chemical formula, the elements in a compound are represented by their chemical symbols, and the ratio of different elements is represented by subscripts.
Explanation:
what are the properties of acids
Explanation:
Aqueous solutions of acids are electrolytes, meaning that they conduct electrical current.
Acids have a sour taste.
Acids change the color of certain acid-base indicates.
Acids react with active metals to yield hydrogen gas.
Acids react with bases to produce a salt compound and water.
is nuts and bolts an example of a element or a compound?
Answer:
In this activity, we will pretend that nuts, washers and bolts are 3 kinds of elements. A single washer represents an atom of WASHER. A single nut represents an atom of NUT and a single bolt represents an atom of BOLT. Atoms can be put together to form compounds.
Answer:
compound its that easy well i gotta go
When describing the electrons in an orbital, we use arrows pointing upward and downward to indicate what property?
(A.) electron configuration
(B.) electron orbitals
(C.) electron charge
(D.) electron spin
Answer:
D.) electron spin
Each sublevel is labeled by its principal energy level and sublevel. Electrons are indicated by arrows inside of the circles. An arrow pointing upwards indicates one spin direction, while a downward pointing arrow indicates the other direction
why is mineral water a compound
Answer:
Because it is made up of different minerals which are chemically combined.
Explanation:
please help
find the impractical formula of the compound that contains 46.6 g of magnesium 61.4 g of sulfur and 92.0 g of oxygen. type subscripts for each element
Answer: The empirical formula is [tex]MgSO_3[/tex]
Explanation:
Mass of Mg= 46.6 g
Mass of S= 61.4 g
Mass of O = 92.0 g
Step 1 : convert given masses into moles.
Moles of Mg =[tex]\frac{\text{ given mass of Mg}}{\text{ molar mass of Mg}}= \frac{46.6g}{24g/mole}=1.942moles[/tex]
Moles of S =[tex]\frac{\text{ given mass of S}}{\text{ molar mass of S}}= \frac{61.4g}{32g/mole}=1.918moles[/tex]
Moles of O =[tex]\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{92.0g}{16g/mole}=5.75moles[/tex]
Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.
For Mg = [tex]\frac{1.942}{1.918}=[/tex]
For S= [tex]\frac{1.918}{1.918}=1[/tex]
For O =[tex]\frac{5.75}{1.918}=3[/tex]
The ratio of Mg: S: O = 1: 1: 3
Hence the empirical formula is [tex]MgSO_3[/tex]
Does anyone know what the molar mass is
Answer:
the formula is M = m/n
Explanation:
M = m/n is the molar mass equals the mass of the substance divided by the number of moles of a substance
Answer:
100.93 g/mol
Explantion: