16.
Magnesium reacts with hydrochloric acid according to the equation below.
Magnesium bertindak balas dengan asid hidroklorik mengikut persamaan berikut.
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
What is the volume of hydrogen gas produced at room condition if 0.6 g of
magnesium is added to the excess of sulphuric acid?
[Relative atomic mass : Mg = 24 : molar volume = 24 dmº mol' at room condition]
Berapakah isipadu gas hidrogen yang dihasilkan pada keadaan bilik jika 0.6 g
magnesium ditambahkan kepada asid hidroklorik berlebihan."
[Jisim atom relative:Mg = 24 : isipadu molar = 24 dm mol! pada keadaan bilik]
A 0.6 cm
B 6.0 cm
C 60.0 cm
D 600 cm​

Answer:

Insulin production would decrease.

Explanation:

Insulin and Glucagon work together to balance the sugar levels in the human blood stream. They work together in a negative feedback loop. Glucagon stimulates the liver to release glucose into the bloodstream in a process known as glycogenolysis. Insulin on the other hand is a sugar-lowering hormone.

Therefore, if glucagon secretion were permanently inhibited, insulin production would decrease as there would not be excess blood sugar to be reduced.

Answer:

Insulin production would decrease.

The quantity of electricity : 2 Faraday = 193000 Coulomb

Given

2 moles of electrons

Required

The quantity of electricity

Solution

According to Faraday, the amount of current flowing in the electrolysis cell is closely related to the amount of substance that reacts

1 Faraday is the amount of electricity that is passed in the electrolysis cell to obtain 1 mole of electrons. 1 mole of electrons is equivalent to an electric charge of 96500 Coulombs.

The conversion / relationship can be stated as follows:

1 Faraday = 1 mole of electrons = 96500 Coulombs

1 faraday = coulomb / 96500

Can be formulated

Coulomb = Q = I. t so:

[tex]\large {\boxed {\bold {1 \: Faraday \: = \: \dfrac {i \: x \: t} {96500}}}}[/tex]

so for 2 moles electrons :

= 2 x 96500 C

= 193000 C

= 2 Faraday

Answer:

It’s either A or D  buttttt probably d

Explanation:

Answer:

True

Explanation:

Those bases which are soluble in water are called alkalis

Answer:

it is called the stigma you also might be able to look it up

Answer:

Fe³⁺

Explanation:

When Fe²⁺ loses an electron, it becomes an Fe³⁺ ion.

   The loss of an electron in an atom makes the atom becomes positively charged. Further losing electrons makes the atom more positive.

 For the given ion;

 Fe²⁺   if it loses an electron more, it becomes Fe³⁺.

The expression is given as:

         Fe²⁺    →    Fe³⁺  +  e⁻

Answer:

46 electrons, all I know.

Sorry!

Explanation:

Explanation:

Pure substances are elements and compounds. These substances have the following properties:

Heterogeneous mixtures have completely opposite properties as the pure substances as given above.

Answer:

V₂ = 1.41 L

Explanation:

Given data:

Initial temperature = 35°C (35 +273.15 K = 308.15 K)

Initial volume = 1.5 L

Final temperature = 17°C (17+273.15 K = 290.15 K)

Final volume = ?

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 1.5 L × 290.15 K / 308.15 k

V₂ = 435.23 L.K / 308.15 k

V₂ = 1.41 L

Answer:

the molecule is formed by covalent bond , and each hydrogen atom forms a single bond with sulphur atom.

Answer:

iwan loptop di ba yan isearch mo nalang

Explanation:

baka lang ka naman makakita ng swerte na aswers

Answer:

Its Vog

Explanation:

Answer:

its not c because i just took the test and i got it wrong

Explanation:

Answer:A

Explanation:

Answer:

In chemistry and physics, quantum refers to a single packet of matter or energy. In practical use, it refers to the minimum amount of energy required for a change or the minimum value of any physical property in an interaction. Quantum is the singular form of the word. Quanta is the plural form of the term.

Explanation:

Answer:

quantum of energy

Explanation:

The term quantum of energy means that the energy is not transferred continuously but as discrete packets of energy. Amount of energy required to move an electron from one energy level to another. The amount of energy an electron gains or loses is. Not always the same. The higher energy levels are.

hope it helps!

Answer:

45.7

Explanation:

Because if the number 1-4 then it goes down and if it 5-9 then it goes up

Answer:ionic

Explanation: ionic bond formation

In the ionic bond formation between calcium and sulfur, a calcium atom donates two valence electrons to a sulfur atom to form a Ca2+ ion and an S2+ ⁻ ion.

Explanation:

Scientists most especially chemists use the mole concepts through balanced chemical equations and molar masses to represent chemical reactions and account for the amount of substances.

The mole concept entails finding molar relationships between reactants and products in a chemical reaction. Mole connects difference chemical parameters and it is used in quantitative analysis of chemical reaction.

  Number of moles  = [tex]\frac{mass}{molar mass}[/tex]

The volume of Carbon dioxide at STP = 209.22 L

Given

411g of Carbon dioxide gas

Required

The volume of Carbon dioxide

Solution

mol of Carbon dioxide :

= mass : MW CO₂

= 411 g : 44 g/mol

= 9.34

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.

So for 9.34 mol :

= 9.34 x 22.4 L

= 209.22 L

Remember:

to balance equations in chemistry, you have to count the amount of atoms there are in a chemical eg:

the number of atoms in H20 are:

2 atoms of hydrogen

1 atom of oxygen (when there are no numbers by the letter it means that theres only 1 atom of it!)

The number next to a letter means the number of atoms thta it is made up of and atoms are the things it is made up of eg chocolate the ingredients are cocoa, milk and sugar ect so just like that CO2, H20 an ALL types of chemicals are made up of atoms. BUT WE WANT TO KNOW HOW MANY ATOMS- so u need to list these for all the 4 chemicals in the equation.

Im telling u this so that u can list out all of the atoms in each chemical (I will do the first two)

CH2=

1 atom of Carbon

2 atoms of hydrogen

O2=

2 atoms of oxygen

once u have listed out all the atoms from EACH of the chemicals in ur question (CH2, 02, CO2 and H20) categorise them like this

CH2

Carbon=........ Atoms

Hydrogen= .......Atoms

(Make sure the table is like vertical like lemme show u as an example. ATTACHED IS AN EXAMPLE OF WHAT UR WORK SHOULD BE SET OUT AS)

When you see the addition sign it means that elements like oxygen and hydrogen etc..basically add them up like CO2 + H20 theres oxygen in both so add up the atoms of oxygen FOR JUST CO2 AND H20 like  if there was one atom of oxygen in CO2 and 2 in h20 add them up and it makes three (1+2=3). 1 oygen  atom from CO2 plus 2 oxygen atoms in H20 that makes 3 atoms for both the chemiclas together (THIS WAS JUST AN EXMAPLE THERE ARENT ACTUALLY 2 ATOMS IN H20 OR 1 ATOM IN C02)

Look at the similarities OF ATOM NUMBERS like if CH2 has one atom of Carbon, CO2 ALSO has one atom of carbon which is fine BUT when it comes to differences u need to cross those out and PUT THAT NUMBER on both sides like if O2 has  2 atoms of oxygen and h20 has 1 that means that they need to be balanced like they either both need to be 1 atom or 2 atoms so for that u need to look attachment sorry u just need to cross them out and make them the same

make sure to write about what atoms are, to list out atoms for each chemical, compare the chemicals in both word chemicals and make them even!

Explanation:

Answer:

Formal charge = valance electron - nonbonding electron - (1/2)bonded electron

For nitrogen atom,

Formal charge = 5 - 2 - (1/2)×6

= 5-2-3

= 0

So, the formal charge on nitrogen atom in HCN is "0".​​​

Explanation:

The formal charge on the N atom of hydrogen cyanide, HCN molecule is 0. Option B is correct.

Formal charge is defined as the individual charge of an atom. It is represented as:

Formal charge = valance electron - nonbonding electron - (1/2)bonded electron

The valence electrons in nitrogen atom is 5, there are 2 non bonding electrons and 6 bonded electrons on N atom in HCN,

Thus, For Hydrogen cyanide molecule, the formal charge on nitrogen atom is calculated as:

Formal charge

= 5 - 2 - (1/2)×6

= 5-2-3

= 0

So, the formal charge on nitrogen atom in HCN is "0".​​​

To know more about formal charge here

https://brainly.com/question/2081051

#SPJ2

Moles of Oxygen= 2.8075 moles

Given

29.2 grams of acetylene

Required

moles of Oxygen

Solution

Reaction(Combustion of Acetylene) :

2 C₂H₂ (g) + 5 O₂ (g) ⇒ 4CO₂ (g) + 2H₂O (g)

Mol of Acetylene :

= mass : MW Acetylene

= 29.2 g : 26 g/mol

= 1.123

From equation, mol ratio of Acetylene(C₂H₂) : O₂ = 2 : 5, so mol O₂ :

= 5/2 x mol C₂H₂

= 5/2 x 1.123

= 2.8075 moles

Answer:

it helps them fly (A)

Explanation:

Answer:

strengths wings?

Explanation:

If I'm right, please give brainliest?

Answer:

they are not................

Answer: The abundance of volcanoes and earthquakes along the Ring of Fire is caused by the amount of movement of tectonic plates in the area. Along much of the Ring of Fire, plates overlap at convergent boundaries called subduction zones. That is, the plate that is underneath is pushed down, or subducted, by the plate above

Explanation:

Answer:

(1) The two column proof is presented here as follows;

Statement         [tex]{}[/tex]                                Reasons

1. C is the midpoint of [tex]\overline {AE}[/tex]         [tex]{}[/tex]           Given  

  B is the midpoint of [tex]\overline {AC}[/tex]         [tex]{}[/tex]          

  D is the midpoint of [tex]\overline {CE}[/tex]         [tex]{}[/tex]          

2. AC = CE, AB = BC, CD = DE        [tex]{}[/tex]      Definition of midpoint

3. AB + BC = AC, CD + DE = CE      [tex]{}[/tex]       Segment addition postulate

4. CD + DE = AC        [tex]{}[/tex]                             Substitution property of equality

5. AB + BC = CD + DE  [tex]{}[/tex]                          Substitution property of equality

6. BC + BC = CD + CD          [tex]{}[/tex]                  Substitution property of equality

7. 2·BC = 2·CD         [tex]{}[/tex]                               Addition of two identical quantities

8. BC = CD  [tex]{}[/tex]                                            Division property of equality

9. BC ≅  CD     [tex]{}[/tex]                                       Definition of Congruence

(2) The two column proof for the triangular geometric figure is presented here as follows;

Statement         [tex]{}[/tex]                                        Reasons

1. 2·WV = XY; 2·YZ = XW; WV = YZ   [tex]{}[/tex]      Given

2.  2·WV = 2·YZ        [tex]{}[/tex]                                Multiplication property

3. XY = XW        [tex]{}[/tex]                                       Substitution Property

4. XW + WV = XV       [tex]{}[/tex]                              Segment Addition Property

XY + YZ = XZ

5. XW + WV = XV      [tex]{}[/tex]                              Substitution Property

XW + WV = XZ

6. XV = XZ       [tex]{}[/tex]                                        Substitution Property

Explanation:

Answer:

Fnet = 20 Newton

Explanation:

Let the force applied by Brian be Fb.

Let the force applied by Alice be Fa.

Given the following data;

Force, Fb = 10N

Force, Fa = 30N

To find the net force, Fnet;

Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.

Mathematically, net force is given by the formula;

[tex] Fnet = Fapp + Fg[/tex]

Where;

Since the two force applied to the box are acting in opposite direction, we would subtract their values to find the net force.

Fnet = Fa - Fb

Fnet = 30 - 10

Fnet = 20 Newton