Answer:
ionic
Explanation:
because when in molten or dissolved in water ions are free to move and carry a charge however when in solid the ions are fixed in position so can't carry a charge.
Explain why ionic compounds have such high melting and boiling points
Why does water appear blue?
Answer:
Explanation:
Water is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see.
4. Cell size is limited by the
(a) amount of cytoplasm.
(b) cell's ability to get rid of wastes.
(c) the size of the nucleus.
(d) the size of the plasma membrane.
Answer:
Maybe it's (a) amount of cytoplasm ...
hope its right
Bacteria and mold break down fallen leaves on the forest floor. When they do
this, they release carbon dioxide into the atmosphere and ntrogen to the
soil. Which of the following roles do bacteria and mold have in the
environment?
Answer:
H
Explanation:
not sure tho sorry if I'm wrong
Can someone please solve this?
Answer:
Indirect (B)
Explanation:
When one facter increases the other decreases.
Answer:
INDIRECT- when one factor increases, the other decreases
Consider the balanced equation below.
PC13+ Cl2 → PC15
What is the mole ratio of PCI3to PCI5?
1:1
2:1
3:5
5:3
Answer:
Mole ratio is 1:1
Explanation:
The equation is:
PCl₃ + Cl₂ → PCl₅
We see that is correctly balanced.
1 mol of PCl₃ react to 1 mol of chlorine gas in order to produce 1 mol of PCl₅
That's why, the mole ratio is, 1:1
There is not another number than 1, at stoichiometry of reaction.
What is the charge for the polyatomic ions listed?
ammonium and acetate
Answer:
-1
Explanation:
Many of the common polyatomicions have an electrical charge of.
(ASAP PLEASE HELP!! Another one) Which of the following has the lowest pH/most acidic?
NH3
НСІ
HON
H20
NaOH
Answer:The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.
Explanation:
In which direction does the electric field point a position directly south of a positive charge?
Answer: Outward
Explanation: :The direction of electric field is radially outward for a positive charge and radially inward for a negative charge. Thus, for the electric field points toward south at a position directly south of a positive charge.
Name the four types of bonding and explain them in your own words. Be specific about the location of the valence electrons.
What is the molarity of a 6.48 L soda that contains 5.53 moles of sugar?
Answer:
0.853 M
General Formulas and Concepts:
Acid-Base Titrations
Molarity = moles of solute / liters of solutionExplanation:
Step 1: Define
Identify variables
[Given] 6.48 L
[Given] 5.53 mol
Step 2: Solve for Molarity
Substitute in variables: M = 5.53 mol / 6.48 LDivide: M = 0.853395Step 3: Check
Follow sig fig rules and round. We are given 3 sig figs.
0.853395 M ≈ 0.853 M
The diagram below represents particles
of different elements in a crystal.
What type of bond holds these
particles together?
A. Covalent
B. Hydrogen
C. Ionic
D. Polar
Answer:
B. Hydrogen
Explanation:
The diagram represents particles of different elements in a crystal. The bond holds these particles together is hydrogen bond. Therefore, option B is correct.
What is hydrogen bond ?An intermolecular force (IMF) known as a hydrogen bond is created when an electronegative atom with a single pair of electrons and a hydrogen atom connected to a strongly electronegative atom are in proximity to another. Between molecules, there are intermolecular forces (IMFs).
When a hydrogen atom that is connected to an electronegative atom moves toward another electronegative atom nearby, powerful intermolecular forces called hydrogen bonds are produced. The hydrogen bond acceptor's electronegativity will rise, resulting in a stronger hydrogen bond.
The interaction known as hydrogen bonding, which involves a hydrogen atom sandwiched between two other atoms with a high affinity for electrons, is stronger than van der Waals forces but weaker than ionic or covalent bonds.
Thus, option B is correct.
To learn more about hydrogen bond, follow the link;
https://brainly.com/question/15099999
#SPJ2
i need help asap please :) it says to “identify the reactants.”
the options are
A: Carbon Dioxide and water
B: Glucose and oxygen
C: sunlight and chlorophyll
The reactants are A: Carbon Dioxide and water
which of the following is an alkaline earth metal?
A.Silicon (Si)
B.Aluminum (Al)
C.Carbon (C)
D.Magnesium (Mg)
Add 250.0mL to 5.00mL and round off the answer
Answer:
255mL
Explanation:
(250.0 + 5.00)mL = 255.00mL
255mL
What is the strongest force that exists between molecules of nitrogen
monoxide (NO)?
Answer:
Hydrogen Bonding (H-Bonding)
What is ppm?
A. Concentration of a solute in grams/106 grams solution
B. Concentration of a solute in mol/L solution
C. Concentration of a solute in mol/kg solvent
D. Concentration of a solute in mol/mol solution
SUBMIT
HURRY!!!!
Answer:
This is an abbreviation for "parts per million" and it also can be expressed as milligrams per liter (mg/L). This measurement is the mass of a chemical or contaminate per unit volume of water. Seeing ppm or mg/L on a lab report means the same thing.
Explain:
(a) Ethanol should be rectified after distillation.
Answer:
Ethanol (boiling point 78°C) and methanol (boiling point 65°C) are two miscible liquids. There is only a small difference in their boiling points. These two liquids are separated from their mixture by fractional ths distillation.
When vapours of the mixture pass through the fractionating column, repeated liquefaction and vapourisation take place. Subsequently, the vapours of low boiling methanol enter the condenser from the fractionating column, condense to liquid and get collected in the round bottomed flask first. Similarly, ethanol with higher boiling point can be collected later in another round bottomed flask.
Where to connect the lines? Pls answer
Answer: The given factors are matched to the effect it would have on the reaction rate are as follows.
Increase reaction rate- Crushing the antacid tablet
- Using many antacid tables
- Adding a catalyst to the water
Decrease reaction rate- Cooling the water during the reaction
No effect on reaction rate- Adding food coloring to the water
Explanation:
When antacid tablet is crushed then there will be more number of particles available for reaction. Hence, more number of collisions will take place due to which rate of reaction increases.
Using many antacid tables will also increase the number of molecules due to which there will be more collisions. Hence, more will be it's rate of reaction.
A catalyst is defined as a substance which helps in increasing the rate of a reaction without itself getting consumed in the reaction.
Therefore, adding catalyst to the water will also increase the rate of reaction.
When water is cooled during the reaction then kinetic energy between molecules decreases due to which there will be less number of collisions. Hence, rate of reaction will decrease.
Adding food coloring will have no effect on the rate of reaction as it is only changing the color of solution and does not participate in the chemical reaction.
Thus, we can conclude that given factors are matched to the effect it would have on the reaction rate are as follows.
Increase reaction rate- Crushing the antacid tablet
- Using many antacid tables
- Adding a catalyst to the water
Decrease reaction rate- Cooling the water during the reaction
No effect on reaction rate- Adding food coloring to the water
Wha is the molecular formula ?
[tex]NONSENSE=REPORTED[/tex]
A molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule. The molecular formula for a compound can be the same as or a multiple of the compound's empirical formula.
I hope it seemed helpful to you!
Answer:
Molecular formulas describe the exact number and type of atoms in a single molecule of a compound. The constituent elements are represented by their chemical symbols, and the number of atoms of each element present in each molecule is shown as a subscript following that element’s symbol. The molecular formula expresses information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols and numbers. Sometimes it also includes other symbols, such as parentheses, dashes, brackets, and plus (+) and minus (–) signs.
Hope it's helpfulWhich of the following solutions is the weakest base?
a) pH 2.3
b) pH 4.6
c) pH 6.6
d) pH 7.9
e) 12.5
Answer:
solution d with pH of 7.9
What is the pH of a solution with a 3.2 × 10−5 M hydronium ion concentration
4.3
4.5
11
12
Answer:
4,5
Explanation:
-log(H+)=-log(3,2x10^-5)=4,49
The pH of the solution will be 4.49
What is pH?A solution's acidity or alkalinity is determined by the concentration of hydrogen ions in the solution. Typically, the pH scale ranges from 0 to 14. Acidic aqueous solutions with a pH will be less than 7 at 25°C are acidic, while basic or alkaline aqueous solutions with a pH will be more than 7 considered basic or alkaline.
The pH formula can be represented as:
pH = -log[[tex]H_{3}O[/tex]]
Calculation of pH is shown as:
It is given that the , [tex][H_{3}O^{+} ][/tex] = 3.2 × [tex]10^{-5} M[/tex].
Now, put the value of given data in pH formula.
pH = -log[3.2 × [tex]10^{-5} M[/tex]]
pH = -log[3.2] -log[[tex]10^{-5} M[/tex]]
pH = -0.5051b+5 log 10 (log 10 = 1)
pH = 4.49
Therefore, the value of pH will be 4.49.
To know more about pH click here.
https://brainly.com/question/12294404.
#SPJ2
What is the difference between an element and a compound? (p.s. it due in 5 mins ASAP so hurry.)
Explanation:
An element just has one-type atoms/atom (e.g. O2). Meanwhile, a compound is a variety of atoms (e.g. H2O).
To what extent do covalent compounds conduct electricity?
always
usually
rarely
never
The answer is never because there's no electricity
Answer:
never is the correct answer
Explanation:
why couple use a method of birth control
Answer:
because it will control the birth of a child which can happen alot being overpopulated in the country or world. It also can mange their life and create a small and happy and healthy family.Also the child can get more love and support from their parents if they have less children and it wont be a taruma for the couple as well. because growing a child can be expensive time costly and really hard.
plz mark me as a brainlest a and thanks my answer
Explanation:
and btw i think the subject should be biology not chemestry
If you took a cross-section of soil from your backyard, what would be the correct order of soil layers from top to bottom? parent rock, subsoil, topsoil, humus topsoil, humus, subsoil, parent rock humus, topsoil, subsoil, parent rock, subsoil, hummus, topsoil
humus, topsoil, subsoil, parent rock
Answer:
either 1. organic, topsoil, subsoil, parent rock, bedrock or the opposite, 2. bedrock, parent rock, subsoil, topsoil, organic.
Explanation:
I study. :) Good luck!
What is the energy of a photon that emits a light of frequency 6.42 x 1014 Hz?
Answer:
Option B. 4.25×10¯¹⁹ J
Explanation:
From the question given above, the following data were obtained:
Frequency (f) = 6.42×10¹⁴ Hz
Energy (E) =?
Energy and frequency are related by the following equation:
Energy (E) = Planck's constant (h) × frequency (f)
E = hf
With the above formula, we can obtain the energy of the photon as follow:
Frequency (f) = 6.42×10¹⁴ Hz
Planck's constant (h) = 6.63×10¯³⁴ Js
Energy (E) =?
E = hf
E = 6.63×10¯³⁴ × 6.42×10¹⁴
E = 4.25×10¯¹⁹ J
Thus, the energy of the photon is 4.25×10¯¹⁹ J
Answer:
B. 4.25 x 10-19J is correct via a p e x
Explanation:
What volume of O2 at STP is required to oxidize 8.0 L of NO at STP to NO2? What volume of NO2 is produced at STP?
The balanced equation of the reaction is:
[tex]O_2 + 2 NO[/tex] ⇒ [tex]2 NO_2[/tex]
Every gas occupied 24 L in one mole in r.t.p. according to the equation:
[tex]24 \times n = V[/tex]
8/24=0.333 mol
2 moles of NO makes 2 moles of [tex]NO_2\\[/tex] so
0.333*24=8L
[HELP PLEASE !!} Which has a pH below 7?
a
acid
b
base
Answer: A- Acid.
Explanation: Because pH's greater than 7 are alkaline which is basic.
What's changed into alcohol while in brew
Answer:
Brewing is the production of beer by steeping a starch source (commonly cereal grains, the most popular of which is barley)[1] in water and fermenting the resulting sweet liquid with yeast. It may be done in a brewery by a commercial brewer, at home by a homebrewer, or by a variety of traditional methods such as communally by the indigenous peoples in Brazil when making cauim.[2] Brewing has taken place since around the 6th millennium BC, and archaeological evidence suggests that emerging civilizations, including ancient Egypt[3] and Mesopotamia, brewed beer.[4] Since the nineteenth century the brewing industry has been part of most western economies.
The basic ingredients of beer are water and a fermentable starch source such as malted barley. Most beer is fermented with a brewer's yeast and flavoured with hops.[5] Less widely used starch sources include millet, sorghum and cassava.[6] Secondary sources (adjuncts), such as maize (corn), rice, or sugar, may also be used, sometimes to reduce cost, or to add a feature, such as adding wheat to aid in retaining the foamy head of the beer.[7] The most common starch source is ground cereal or "grist" - the proportion of the starch or cereal ingredients in a beer recipe may be called grist, grain bill, or simply mash ingredients.[8]
Steps in the brewing process include malting, milling, mashing, lautering, boiling, fermenting, conditioning, filtering, and packaging. There are three main fermentation methods, warm, cool and spontaneous. Fermentation may take place in an open or closed fermenting vessel; a secondary fermentation may also occur in the cask or bottle. There are several additional brewing methods, such as Burtonisation, barrel-ageing, double dropping, and Yorkshire Square.
hope it helps...
