Answer:
=242.47 g of HF
Explanation:
A salad including lettuce, tomatoes, and onions would be classified as a
A) compound.
B) element.
C) mixture.
D) solution.
Answer:
C)Mixtured
Explanation:
I know the answer
PLEASE HURRY
Animals respond to external stimuli, such as light, temperature, and danger. Explain what body system is utilized when animals go into fight or flight mode
What do all cells requiere a constant supply of
What is a substance so pure it cannot be broken down? *
Element
Compound
Mixture
Atom
Answer:
Element
Explanation:
This is a pure substance which can't be split into simpler substances by chemical means
What are the missing coefficients for the skeleton equation below?
NH3 (g) + O2(g) → N2(g) + H2001)
Answer:
4, 3 , 2 and 6
Explanation:
The reaction equation is given as;
NH₃ + O₂ → N₂ + H₂O
Now, we need to balance the reaction equation;
NH₃ + O₂ → N₂ + H₂O
put the numbers a,b,c and d;
aNH₃ + bO₂ → cN₂ + dH₂O
We need to balance the equation algebraically, ;
Conserving N;
a = 2c
Conserving H;
3a = 2d
Conserving O;
2b = d
Now, let c = 1, a = 2, d = 3 and b = [tex]\frac{3}{2}[/tex]
multiply through by 2;
a = 4, b = 3, c = 2 and d = 6
Insert the parameters:
4NH₃ + 3O₂ → 2N₂ + 6H₂O
orang juice a mixture?why?
Answer:
mixture, because it is made of more than 1 ingredient.
In the chemical reaction below, what Is the product? C+o2 -> Co2
Answer:
CO₂
Explanation:
The product of the reaction is CO₂.
In a chemical reaction, the product is the substance usually found on the right hand side of the expression.
Reaction equation is given as;
C + O₂ → CO₂
In this reaction, C and O₂ are the reactants
CO₂ is the product of the reaction.
This reaction is called a combination reaction in which two species combines to give a product.GIVING BRAINLEST WITH WHOEVER HAS THE RIGHT ANSWER! Plz and Tysm.
Which is more dense?
1. Continental Crust
2. Oceanic Crust
3. Both
4. Neither one
plz help me asap and dont make it more then 4 sentences or my teacher will know it was not me
y’all I’m tryna get you some BRAINLIEST POINTS!!!! So answer this simple question.
Can someone write 3 complex sentences i really need some help thank you!!!:)
Explanation:
This Theory proves that every Organism is made of one cell.
This also explained spread of cells like that of cancer.
this also explains how organisms create and die.
it explained the why organisms of same breed are alike or similar
Analyisis Of Compound (%)
C=72.15 H=7.08 N=4.68 O=16.03
What is it?
Answer:
Explanation:
Ratio of C : H : N : O in grams
= 72.15 : 7.08 : 4.68 : 16.03 in grams
Ratio of C : H : N : O in moles
72.15/12 : 7.08/1 : 4.68/14 : 16.03/16 in moles
6.01 : 7.08 : .334 : 1.00
6.01/ .334 : 7.08/.334 : .334/.334 : 1.00/.334 in moles
18 : 21.19 : 1 : 3
18 : 21 : 1 : 3
empirical formula = C₁₈H₂₁NO₃
It is codeine .
Which of the following covalent bonds is the strongest?
a)
quadruple covalent bond
b)
triple covalent bond
c)
double covalent bond
d)
single covalent bond
Answer:
a) quadruple covalent bond
Explanation:
Quadruple covalent bonds are the strongest covalent bonds. The more the number of bonding pairs, the stronger the bond becomes.
A covalent bond is formed by sharing of electrons between two species. They are usually between compound with similar electronegativities. The number of bonds between the atom determines the bond strength.Single < double < triple < quadruple covalent bonds.
halppppppppppppppppppppppppppppppppp
Answer:
It responds to the environment.
It grows and develops.
It produces offspring.
It maintains homeostasis.
It has complex chemistry.
It consists of cells.
Why might it be important to identify isoelectronic ions/atoms?
Answer:
Isoelectronicity may be used to predict the properties and reactions of a species. It is used to identify hydrogen-like atoms, which have one valence electron and are thus isoelectronic to hydrogen.
Explanation:
What is a vapor?
O A. A substance that has a much higher melting point and boiling
point than other similar substances
O B. A substance that is always in the solid or liquid phase at room
temperature
C. A substance that is in the gas phase at a temperature at which it
would normally be a solid or liquid
O D. A substance that forms a gas, but only at very high temperatures
Answer:
in physics, a vapor or vapour is a substance in the gas phase at a temperature lower than its critical temperature, which means that the vapor can be condensed to a liquid by increasing the pressure on it without reducing the temperature. A vapor is different from an aerosol.
Explanation:
The Ca +2 ion is isoelectronic with ?
Answer:
nut
Explanation:
can you pair electrons in degenerate orbitals before filling each orbital halfway
What is the correct name for the compound H2O
Answer:
The common name for the compound H2O is water.
Explanation:
The systemic name of H2O is Dihydrogen monoxide.
Answer:
water
Explanation:
When a substance changes its state, all BUT ONE of these statements ist
A)
Mass remains constant.
B)
Only the form changes.
Kinetic energy changes.
D)
Something chemically new is formed.
Science
Answer:
Science...Only the form changes.Kinetic energy changes.
Explanation:
SCIENCE
Answer:
"Something chemically new forms" is the incorrrect statement
Explanation:
When a substance changes its state, it retains its mass even though its form and kinetic energy changes. It is simply moving between states, that is: loosing energy or gaining it. its chemical composition does not change.
Have a good day dude
Which of the following is an example of aerobic respiration?
A.Using yeast to make dough
B.Respiring while swimming underwater
C.Plant roots respiring in soil
Answer:
i think the other person is wrong because humans cant breathe underwater
Explanation:
i say c. is the answer
CALCULATE THE MOLES IN 2.17 X10^23 MOLECULES OF FLUORINE
Answer:
0.36 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{2.17 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{2.17}{6.02} \\ = 0.360465...[/tex]
We have the final answer as
0.36 molesHope this helps you
is it true or false that ALL organisms are made of MANY cells?
Answer:
I think false.
Explanation:
I say false because most living organisms are made up of one cell.
Answer:
yes!
Explanation:
the cell is the basic unit of life; and new cells arise from existing cells
Determine what elements are denoted by the following electron configurations:
5) 1s2 2s2 2p6 3s2 3p4
6)
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1
Answer:
5. Sulphur .
Explanation:
sulphur has the electron configuration above because it has 16 atomic number
Noah added yeast and sugar to lukewarm water and placed it in a flask. He stretched a balloon over the opening of the flask. After several minutes, he noticed small bubbles rising along the side of the flask as the balloon slowly began to inflate. Noah concluded that —
Answer:
There was a chemical reaction
Explanation:
there was bubbles on the side of the flask
Which of the following is the correct definition of chemical energy?
A.
energy stored in chemical bonds of molecules
B.
energy produced from the splitting of atoms
C.
energy of an object due to the random motion of its atoms and molecules
D.
energy an object has because of its motion or position
PLSHEL HELP DUE TODAY
Answer:
A
Explanation:
What does the formula tell us in ionic compounds?
Answer:The overall ionic formula for a compound must be electrically neutral, meaning it has no charge. When writing the formula for the ionic compound, the cation comes first, followed by the anion, both with numeric subscripts to indicate the number of atoms of each.
Explanation:
Which substance can be broken down by chemical means?
Answer:
compounds
Explanation:
Compounds – pure substances that are the unions of two or more elements. They can be broken into simpler substances by chemical means.
A mountain climber at the peak of a mountain has _____
energy.
Answer:
Potential energy
Explanation:
A mountain climber at the peak of a mountain has potential energy.
The potential energy of a body is stored energy in a body. It is function of mass and position of the body.
Mathematically;
P.E = mgh
m is the mass
g is the acceleration due to gravity
h is the height
A boxed 10 kg computer monitor is dragged by friction 5.5 m up along the moving surface of a conveyor belt inclined at an angle of 36.9° above the horizontal. If the monitor’s speed is a constant, how much work is done on the monitor by friction?
Answer:
324 J
Explanation:
58.84 * 5.5 J = 324 J
I got 58.84 by 10 * 9.8 (gravity) * sin(36.9)
The amount of work done on the monitor by friction is equal to 431 Joules.
Given the following data:
Mass of computer monitor = 10 kgDistance = 5.5 metersAngle of inclination = 36.9°To determine the amount of work done on the monitor by friction:
Mathematically, work done is given by the formula:
[tex]Work\;done = mgdcos\theta[/tex]
Where:
m is the mass of an object.g is the acceleration due to gravity.d is the distance.Substituting the given parameters into the formula, we have;
[tex]Work\;done = 10 \times 9.8 \times 5.5 \times cos(36.9)\\\\Work\;done = 539 \times 0.7997[/tex]
Work energy = 431 Joules.
Read more: https://brainly.com/question/22599382
Explain why transition metals do not have a predictable pattern for the
ionic charges they form.
Explanation:
Many transition metals cannot lose enough electrons to attain a noble-gas electron configuration. In addition, the majority of transition metals are capable of adopting ions with different charges.
The reason why transition metals do not have a predictable pattern should be explained below.
What are transition metals?It comprises many chemical elements that contains valence electrons with respect to the participation in the creation of the chemical bonds. The various transition metals should not lose sufficient electrons for attaining the noble gas electron configuration. The majority of the transition metal should be capable of adopting the ions with the distinct charges.
Learn more about charges here: https://brainly.com/question/21186713
Name the element: 1s2 252 2p 3s2 3p6 453 3d9
O Strontium Sr
O Krypton Kr
O Tungsten W
O Copper Cu
Silver Ag
Silicon Si
Answer:
Cu
Explanation:
The sublevel notation is
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹
The element is unknown;
To find the element, sum the superscipts because the indicate the electrons;
2 + 2 + 6 + 2 + 6 + 2 + 9 = 29
The element with 29 electrons is copper
