Answer:
i don't no the
answer
i am sorry
Answer:
Saturated fats: Saturated fats are a type of fat-containing a high proportion of fatty acid molecules without double bonds, considered to be less healthy in the diet than unsaturated fat.
Unsaturated fats: Unsaturated fats are a type of fat-containing a high proportion of fatty acid molecules with at least one double bond, considered to be healthier in the diet than saturated fat.
What pair of properties do all solids have?
Answer:
Has definite shape and volume
Solids have high melting point
Explanation:
calculate the percentage of sodium and carbon and oxygen in sodium carbonate
The lithosphere ______ part of the earth’s crust.
A. Gaseous
B. Solid
C. Water
D. Liquid
Answer:
The lithosphere solid part of the earth's crust
3) How many grams of calcium hydroxide are necessary to create 49.5 mL of a 1.55 M solution?
Answer:
5.68g
Explanation:
I need help with this pls help
Answer: true
Explanation:
Which type of front is most likely moving through this area?
A. cold front
B. warm front
C. occluded front
D. stationary front
Answer:
Cold front
Explanation:
An experiment requires 66.6 g of ethyl alcohol (density = 0.790 g/mL). What is the volume?
Answer:
Volume = 84.30 mLExplanation:
Mass = 66.6 gram
Density = 0.790 g/mL
Volume = Mass ÷ Density
Volume = 66.6 ÷ 0.790
Volume = 84.30 mL
In what type of reaction is water always a product
when hydrogen and oxygen combine then they form water as product
also in neutralization reaction water form as product
hope it helps
Water is always a product in a type of chemical reaction called a neutralization reaction.
A reaction is a process that involves the transformation of one or more substances into one or more different substances.
Neutralization reaction is type of reaction occurs when an acid and a base react together to form a salt and water. The general equation for a neutralization reaction is:
[tex]\rm acid + base \rightarrow salt + water[/tex]
In this type of reaction, the hydrogen ions ([tex]\rm H^+[/tex]) from the acid combine with the hydroxide ions ([tex]\rm OH^-[/tex]) from the base to form water ([tex]\rm H_2O[/tex]). The remaining ions from the acid and the base combine to form a salt.
Therefore, water is always a product in a neutralization reaction, which occurs when an acid and a base react together to form a salt and water.
Learn more about reaction here:
https://brainly.com/question/16737295
#SPJ6
An earthquake creates a type of wave that shakes the ground. If a large earthquake occurs in Greece, how can the waves be felt across the sea in Italy?
A.
Waves can be transformed into strong winds that travel across the sea.
B.
Waves do not travel through water, but they can crash the sea into land far away.
C.
Waves can cause a series of earthquakes around the world.
D.
Waves can travel through different media including solid land and water.
metal and one atom of a group
The following Lewis representation depicts a reaction between one atom of a group
nonmetal
eg
X.
+
x*
+
In this representation, each
atom loses
electron(s) and each
atom gains
electron(s)
Teg
The bonds that form in the product would be
Explanation:
X = Group 1 metal
Y = Group 7 Non metal
The dots basically signifies the group.
Metal loses electrons and non metal gains electron. The valency of X is 1 and that of Y is 7.
X atom loses one electron and Y atom gains one electron.
The bond that forms between a metal and a non metal is an ionic bond.
How many MOLECULES are in 5.0 grams of sodium chloride? (Use "molecules" as your unit...Enter as 9.9 x 10^99 molecules)
Answer:
[tex]\boxed {\boxed {\sf 5.2 *10^{22} \ molecules \ NaCl}}[/tex]
Explanation:
1. Convert grams to moles
First, convert grams to moles using the molar mass. This can be found on the Periodic Table.
Na: 22.9897693 g/molCl: 35.45 g/molSodium (Na) has an oxidation state of +1 and chlorine (Cl) has an oxidation state of -1, so they combine in a 1:1 ratio for a formula of NaCl. We can simply add their moles masses.
NaCl: 22.9897693 g/mol + 35.45 g/mol = 58.4397693 g/molUse this as a ratio.
[tex]\frac {58.4397693 \ g \ NaCl}{ 1 \ mol \ NaCl}[/tex]
Multiply by the given number of grams.
[tex]5.0 \ g \ NaCl *\frac {58.4397693 \ g \ NaCl}{ 1 \ mol \ NaCl}[/tex]
Flip the fraction so the grams of sodium chloride cancel.
[tex]5.0 \ g \ NaCl *\frac {1 \ mol \ NaCl}{ 58.4397693 \ g \ NaCl}[/tex]
[tex]5.0 *\frac {1 \ mol \ NaCl}{ 58.4397693 }=\frac {5.0 \ mol \ NaCl} { 58.4397693 } = 0.0855581749 \ mol \ NaCl[/tex]
2. Convert moles to molecules
We must use Avogadro's Number. This tells us the amount of particles (molecules, atoms, etc.) in 1 mole of a substance. In this case, it is molecules of sodium chloride.
[tex]\frac{6.022*10^{23} \ molecules \ NaCl} {1 \ mol \ NaCl}[/tex]
Multiply by the number of moles we calculated.
[tex]0.0855581749 \ mol \ NaCl*\frac{6.022*10^{23} \ molecules \ NaCl} {1 \ mol \ NaCl}[/tex]
The moles of sodium chloride cancel.
[tex]0.0855581749 *\frac{6.022*10^{23} \ molecules \ NaCl}{1}=5.15231329*10^{22} \ molecules \ NaCl[/tex]
The original measurement of grams has 2 (2 and 0) significant figures, so our answer must have the same. For the number we calculated, that is the hundredth place. The 5 in the hundredth place tells us to round the 1 to a 2.
[tex]5.2 *10^{22} \ molecules \ NaCl[/tex]
Is this statement true or false?
Gymnosperms reproduce using seeds, but angiosperms do not.
Answer:
FALSE!
Explanation:
Gymnosperms do use seeds but are exposed like the pine cones of pines. Angiosperms still have seeds, however, they flower or fruit.
Answer:
False
Explanation:
Please help asap. Brainliest to correct.
Which formula can be used to calculate the percent yield? (5 points)
Select one:
a. (Theoretical yield ÷ actual yield) x 100
b. (Actual yield ÷ theoretical yield) x 100
c. (Amount of reactants ÷ amount of products) x 100
d. (Amount of products ÷ amount of reactants) x 100
Answer:
I guess this answer is c
yh
Answer:
b. (Actual yield ÷ theoretical yield) x 100
Explanation:
The percent yield will be a ratio of collected or actual yield to the theoretical yield. Like any percentage, you are determining a part of a whole. You multiply by 100 to convert your decimal answer from the division into a percentage.
What is the total number of oxygen atoms on the left-hand side of this chemical equation?
2 Caz(PO4),(s)+48i0,(s) +12C(s) - 4 Casio2(3)+P4($)+12CO(g)
Answer:
Is the answer eight atoms
What is the pH of this solution?
Answer:
pH = 11.216.
Explanation:
Hello there!
In this case, according to the ionization of ammonia in aqueous solution:
[tex]NH_3+H_2O\rightleftharpoons NH_4^++OH^-[/tex]
We can set up its equilibrium expression in terms of x as the reaction extent equal to the concentration of each product at equilibrium:
[tex]Kb=\frac{[NH_4^+][OH^-]}{[NH_3]} \\\\1.80x10^{-5}=\frac{x*x}{0.150-x}[/tex]
However, since Kb<<<1 we can neglect the x on bottom and easily compute it via:
[tex]1.80x10^{-5}=\frac{x*x}{0.150}\\\\x=\sqrt{1.80x10^{-5}*0.150}=1.643x10^{-3}M[/tex]
Which is also:
[tex][OH^-]=1.643x10^{-3}M[/tex]
Thereafter we can compute the pOH first:
[tex]pOH=-log(1.643x10^{-3}M)\\\\pOH=2.784[/tex]
Finally, the pH turns out:
[tex]pH=14-2.784\\\\pH=11.216[/tex]
Regards!
Do Newton's Laws still apply in space?
Answer:
Yes, they work in space. I forgot an example, will edit the post when I found it
Hope this helps!
1 = 2 Amps, R = 3 Ohms, V = ? Volts
Answer:
6 volts
Explanation:
Use Ohm's Law:
V = IR
V = (2 amps)(3 ohms) = 6 volts
Which action is not an example of work?
A. pushing a box across the floor
B. picking up a box off the floor
C. holding a tray in the Cafeteria line
D. raising a barbell over your head
C. picking a tray in the cafeteria line
Which of the following components does a disc brake system use?
brake shoe
adjuster screw
wheel cylinder
caliper
The caliper is a component which is used by a disc brake system for performing its function.
What are the components of disc brake system?The disc braking system consist of components such as disc/rotor, a brake calliper and brake pads. When the brake pedal is pushed, brake fluid creates pressure that produces friction.
So we can conclude that the caliper is a component which is used by a disc brake system for performing its function.
Learn more about system here: https://brainly.com/question/14323743
What is the formula for the sulfate ion?
What is the formula for the sulfite ion?
What is the formula for the hydrogen sulfate ion?
Sulfate - SO4^-2
Sulfite - SO3^-2
Hydrogen Sulfate - HSO4-
A sample of a gas at 25°C has a volume of 150 mL when its pressure is 0.947 atm. What will the temperature of the gas be at a pressure of 0.987 atm and changes to 144mL?
*please help*
Answer:
25°C
Explanation:
Combined Gas Law (P₁V₁)/T₁ = (P₂V₂)/T₂
(0.947 atm)(150 mL)/25°C = (0.987 atm)(144mL)/T₂
5.682 = 142.128/T₂
T₂ = 142.128/5.682
T₂ = 25.0137272756°C = 25°C
What is the meaning of ground state energy?
hope it helps you ❣❣
Mark me as brainliest
Which element's properties form the basis for all life?
Answer:
carbon
Explanation:
The properties of carbon forms the basis for all life. Explanation: The atoms of carbon are found in the molecules of all living species.
What is the molar mass of Mg(HSO3)2?
What volume, in mL, of 0.100 M NaOH is required to neutralize 35.0 mL of 0.102 M hydroiodic acid HI?
Answer:
35.7 mL NaOH
Explanation:
M1V1 = M2V2
M1 = 0.100 M NaOH
V1 = ?
M2 = 0.102 M HI
V2 = 35.0 mL
Solve for V1 --> V1 = M2V2/M1
V1 = (0.102 M)(35.0 mL) / (0.100 M) = 35.7 mL NaOH
What is the mass of 5.55 moles of carbon monoxide
Answer:
[tex]\boxed {\boxed {\sf 155 \ g\ CO}}[/tex]
Explanation:
To convert from moles to mass, the molar mass must be used.
First, write the chemical formula for carbon monoxide. Since the carbon (C) comes first without a prefix, there is 1 carbon atom. The prefix mono- before oxide means 1, so there is also 1 oxygen (O) atom. The formula is CO.
Next, look up their molar masses on the Periodic Table.
C: 12.011 g/mol O: 15.999 g/molSince there is 1 atom of each, the molar masses can be added.
CO: 12.011 g/mol + 15.999 g/mol = 28.01 g/molUse this molar mass as a ratio.
[tex]\frac {28.01 \ g \ CO} {1 \ mol \ CO}[/tex]
Multiply by the given number of moles:5.55
[tex]5.55 \ mol \ CO *\frac {28.01 \ g \ CO} {1 \ mol \ CO}[/tex]
The moles of carbon monoxide cancel.
[tex]5.55 * \frac {28.01 \ g \ CO} {1 }[/tex]
Multiply.
[tex]155.4555 \ g \ CO[/tex]
The original measurement of moles has 3 significant figures, so our answer must have the same. For the number we calculated, it is the ones place. The 4 in the tenths place tells us to leave the 5.
[tex]155 \ g\ CO[/tex]
5.55 moles of carbon monoxide is about 155 grams.
Question 7 (1 point)
A sample of a gas has a pressure of 0.895 bar when the volume is 318 L. What is the
pressure of the gas when the volume is 125 L?
Answer:
2.28bar
Explanation: Boyle's law P1V1=P2V2 manipulate formula in favor of V2 the new formula should beP1V1/V2
0.895*318/125=2.2768 but to same sigfig it is 2.28
Take your time please.
Answer:
1.) Eyewash station --> D
2.) Absorbent material --> G
3.) Fire extinguisher --> F
4.) Safety Shower --> E
5.) Biohazard container --> J
6.) Broken glass container --> I
7.) Safety goggles --> C
8.) Lab apron --> H
9.) asbestos gloves --> A
10.) Latex gloves --> B
Explanation:
In an equipped laboratory, alot of safety equipments are made available and kept in area that it could be easily accessed in the laboratory. Safety or protective equipments are those materials that helps protect a laboratory personnel while at work on the lab.
These equipments include:
--> Eyewash station: This is an equipment used in the laboratory during emergency to rinse chemical from the eye. Therefore option D is correct.
--> Absorbent material: They are used to contain small spills in the laboratory. Therefore option G is correct.
--> Fire extinguisher: This equipment is used to put out small fires. Therefore F is correct.
--> Safety Shower: This is used to rinse away chemical from clothes and on skin during emergency. Therefore option E is correct.
--> Biohazard container: This container is used to safely dispose bacteria culture, blood and other living tissues. Therefore option J is correct.
--> Broken glass container: This is used to dispose cracked, chipped or broken bottle in the laboratory. Therefore option I is correct.
--> Safety goggles: This helps to protect the eye from chemical and broken glasses. Therefore option C is correct.
--> Lab apron: This is worn by the laboratory personnel to help protect the skin from chemical and biohazards. Therefore option H is correct.
--> Asbestos gloves: these are heat resistant gloves used to protect the hands from heat. Therefore option A is correct.
--> Latex gloves: these are equally worn by the laboratory personnel to protect the hands from chemicals and biohazards
[tex]Answer :—✔[/tex]
THE OTHER PERSON GAVE THE CORRECT ANSWERASAP!!
Identify the limiting reactant when 6 moles of CaCl2 is combined with 6 moles of Al2O3.
Reaction: 3CaCI2 + Al2O3 -> 3CaO + 2AlCI3
Answer:
just downloud smart
Explanation:
thank me later
How many moles are contained in 325 gram sample of ammonium dichromate (NH4)2Cr2O7
Answer:
Hyba odpowiedzi c. Hyba
Mole can be defined as the number of molar mass units of the compound in the sample. The moles of ammonium dichromate in 325 grams sample is 1.29 mol.
What is molar mass?The molar mass can be given as the mass of each atom in the formula unit. The molar mass of ammonium chromate is given as:
[tex]\rm (NH_4)_2Cr_2O_7=2(N)+4\;\times\;2(H)+2(Cr)+7(O)[/tex]
Substituting the mass of each atom to identify the molar mass of ammonium chromate:
[tex]\rm (NH_4)_2Cr_2O_7=2(14)+4\;\times\;2(1)+2(52)+7(16)\\ (NH_4)_2Cr_2O_7=28+8+104+112\\ (NH_4)_2Cr_2O_7=252 \;g/mol[/tex]
The molar mass of ammonium dichromate s 252 g/mol. The moles of the compound in 325 g is given as:
[tex]\rm Moles=\dfrac{mass}{molar\;mass} \\\\Moles=\dfrac{325\;g}{252\;g/mol}\\\\ Moles=1.29\;mol[/tex]
The moles of ammonium dichromate in the sample are 1.29 mol. Thus, option c is correct.
Learn more about moles, here:
https://brainly.com/question/15209553