what is the name of the compoud H2Co2
If you have 15g of sodium carbonate, what
mass of sodium is present in that sample?
Answer: 6.75 g
Explanation:
if you are using 657.0 grams of oxygen gas to react with calcium how many gram of calcium oxide will u product
Answer:
The amount in grams of CaO that will be produced is 2,302.67824 grams
Explanation:
The reaction between calcium and oxygen to produce calcium oxide (quicklime) can be presented as follows;
2Ca (s) + O₂ (g) → 2CaO (s)
From the above chemical equation, we have;
2 moles of calcium, Ca, react with 1 mole of oxygen gas, O₂, to produce 2 moles of CaO
With the assumption that there is an excess amount of Ca, we have;
The molar mass of O₂ = 32 g/mol
The number of moles, 'n', of O₂ in 657.0 grams of oxygen is therefore;
The number of moles of a substance = Mass of substance/(Molar mass of substance)
∴ n = 657.0 g/(32 g/mol) = 20.53125 moles
The number of moles of O₂ in the 657.0 grams of oxygen present in the reaction, n = 20.53125 moles
1 mole of O₂ produces 2 moles of CaO, therefore, 20.53125 moles of oxygen will produce 2 × 20.53125 or 41.0625 moles of CaO
The molar mass of CaO = 56.0774 g/mol
Therefore, the mass of 41.0625 moles of CaO is given as follows;
Mass of substance = (The number of moles of a substance) × (Molar mass of substance)
The mass of CaO produced = 41.0625 moles × 56.0774 g/mol = 2,302.67824 g.
4. Which of the following statements
about homeostasis is NOT true?
A Maintaining homeostasis requires that all
of the body systems work together.
B Long periods of stress can disrupt
homeostasis.
C Body temperature is a factor of
homeostasis.
D Only the nervous and endocrine systems
are involved in maintaining homeostasis.
Answer: Only the nervous and endocrine systems are involved in maintaining homeostasis.
Explanation: Hope this helped you
D. Only the nervous and endocrine systems are involved in maintaining homeostasis.
Living systems maintain homeostasis, which is defined as a state of constant internal, physical, and chemical conditions. This is a state of optimal functioning for the organism in which several variables, such as body temperature and fluid balance, are maintained within pre-determined boundaries.All of the body's systems must operate together to maintain homeostasis.Long periods of stress can cause homeostasis to be disrupted.Homeostasis is influenced by body temperature.Statement that is incorrect about homeostasis is "D. Only the nervous and endocrine systems are involved in maintaining homeostasis."For more information:
https://brainly.com/question/3888340?referrer=searchResults
Which types of changes must follow the law of conservation of mass?
Both physical and chemical changes
Neither physical nor chemical changes
Only physical changes
Only chemical changes
Answer: both
Explanation:
Could someone please help me? You can ignore number 3
For Number 2)
THE ELEMENTS TEND TO FORM COMPOUNDS BECAUSE AOMS ARE UNSTABLE AND CAN SHARE ELECTRONS IN THIER OUTER ENERGY LEVELS .
AS WE KNOW, ATOMS OF AN ELEMENT BECOMES MORE STABLE BY LOSING , GAINING AND SHARING ELECTRONS.
Elements react with each other to complete their octet or duplet so as to become stavle in nature. For e.g. Carbon reacts with oxygen to form carbon dioxide. Carbon reacts with four molecules of hydrogen to form methane - CH4.
What is the amount of diamine silver that can be formed when 10.00 g AgCl is mixed with 1.00 L of 0.100 M NH3?
The amount of diamine silver chloride = 8.87 g
Further explanationGiven
10 g AgCl
1.00 L of 0.100 M NH3
Required
the amount of diamine silver
Reaction
AgCl + 2 NH₃ → [Ag(NH₃)₂]Cl
mol AgCl :
= mass : MW
= 10 g : 143,32 g/mol
= 0.0698
mol NH₃ :
= M x V
= 0.1 x 1
= 0.1
NH₃ as a limiting reactant
mol [Ag(NH₃)₂]Cl based on NH₃ :
= 1/2 x mol NH₃
= 1/2 x 0.1
= 0.05
Mass diamine silver :
= 0.05 x 177.3822 g/mol
= 8.87 g
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from =3 to =1.
Answer:
[tex]1.936\times 10^{-18}\ \text{J}[/tex]
Explanation:
[tex]R_h[/tex] = Rydberg constant = [tex]2.178\times 10^{-18}\ \text{J}[/tex]
[tex]n_i[/tex] = Initial shell = 3
[tex]n_f[/tex] = Final shell = 1
We have the relation
[tex]\Delta E=R_h(\dfrac{1}{n_f^2}-\dfrac{1}{n_i^2})\\\Rightarrow \Delta E=2.178\times 10^{-18}(\dfrac{1}{1^2}-\dfrac{1}{3^2})\\\Rightarrow \Delta E=1.936\times 10^{-18}\ \text{J}[/tex]
The energy of the photon emitted here is [tex]1.936\times 10^{-18}\ \text{J}[/tex].
Two steps that the factory manger can take to make the factory more carbon neutral are to and to
How does evaporation lead to precipitation
Answer:
1.evaperation
2.condenstation
3.precipatation
Explanation:
So I guess condenstation leads to precipatation-
Answer:
Evaporation is when water/liquids changes state from a liquid to a gas. Which eventually with enough water water vapor (which is what forms when water evaporates), it turns into clouds. But when the clouds get too heavy and full of water. Rain/precipitation falls from those clouds.
-Hope this helps!
Explanation:
13.Which shows the order of increasing ionization energy?
a.Si, Al, Mg, Na
b.Ga, Ge, As, Se
c.Be, Mg, Ca, Sr
d.F, Cl, Br, I
What is mass in grams of 2.30 moles of Aluminum?
62.1 g Al
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
2.30 mol Al
Step 2: Identify Conversions
[PT] Molar Mass of Al - 26.98 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 2.30 \ mol \ Al(\frac{26.98 \ g \ Al}{1 \ mol \ Al})[/tex]Multiply/Divide: [tex]\displaystyle 62.054 \ g \ Al[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
62.054 g Al ≈ 62.1 g Al
What are the three energy's .
Answer:
Energy and how it can change forms. Kinetic, potential, and chemical energy.
I need help plz help me
Answer:
A
Explanation:
New rocks are heavier than old rocks.
A chemical process used to produce ethanol as a fuel additive was expected to produce 5,000 kilograms of ethanol based on the amounts of starting materials used, but only 4,760 kilograms were produced. What was the percent yield for ethanol in this process? A)1.09 percent B)4.80 percent C)95.2 percent D)105 percent
Answer:
The percent yield for ethanol in this process is 95.2%
Explanation:
Yield is the ratio between the amount of product actually obtained in the reaction and the maximum amount of product that could have been obtained if the reagents had been completely consumed.
The theoretical yield is the yield is the maximum you can get in a reaction.
On the other hand, the actual performance shows what you really get in experimentation. It is generally less than the theoretical yield.
So, the percentage return is the actual return times the theoretical return multiplied by 100.
So, in this case the percentage yield will be calculated as:
[tex]percent yield=\frac{4,760 kg}{5,000 kg} *100[/tex]
percent yield= 95.2%
The percent yield for ethanol in this process is 95.2%
(NH4)3P is it Ionic or Molecular??
Answer: It is molecular
Explanation: The reason it is molecular is because it has no ions in the formula it only has the molecular mass which is the reason why it is in fact molecular
A cylinder of an ideal gas contains 1.2 moles of gas and occupies a volume of 5.0L. If 0.5 moles of a second gas are added to the cylinder, and the cylinder is allowed to expand until it reaches the same temperature and pressure as before, what is the final volume of gas, in liters, that occupies the cylinder?
Answer:
7.08 L
Explanation:
From the question given above, the following data were obtained:
Initial mole (n₁) = 1.2 moles
Initial volume (V₁) = 5 L
Final mole (n₂) = 1.2 + 0.5 = 1.7 moles
Final volume (V₂) =?
From ideal gas equation,
PV = nRT
Divide both by n
PV / n = RT
Divide both side by P
V / n = RT/P
RT/P => constant
Therefore,
V₁ / n₁ = V₂ / n₂
With the above formula i.e
V₁/n₁ = V₂/n₂
We can obtain the final volume of the gas as follow:
Initial mole (n₁) = 1.2 moles
Initial volume (V₁) = 5 L
Final mole (n₂) = 1.7 moles
Final volume (V₂) =?
V₁/n₁ = V₂/n₂
5 / 1.2 = V₂ / 1.7
Cross multiply
5 × 1.7 = 1.2 × V₂
8.5 = 1.2 × V₂
Divide both side by 1.2
V₂ = 8.5 / 1.2
V₂ = 7.08 L
Therefore, the final volume of the gas is 7.08 L
This mineral can be scratched with a fingernail.
Fluorite
0 Gypsum
Quartz
Pretty sure it’s gypsum.
If 1 g of radium-226 has an activity of 1 curie, what is the activity of 2 g of radium-226? 1 curie 2 curies 4 curies 10 curies
Answer:
2 curies
Explanation:
This is actually pretty easy to explain.
The Radium-226 which is an isotope of the radium, have an activity of curie. This is basically used in radioactivity of certain elements.
As in both cases we have Radium -226 and we are only varying the mass of the Radium, then, we can just do a rule of 3 to calculate this:
1 g Ra-226 --------> 1 Curie
2 g Ra-226 --------> X Curie
Solving for X:
X = 2 g * 1 Curie / 1 g
X = 2 Curies.You can also see this by taking 2 grams of Ra per separate. On one side you have 1 g of Ra-226 and on the other side, you have another 1 g of Ra-226. Both have 1 Cury of activity. If you put both on the same side, you will have 1 Cury of 1 isotope plus 1 cury of the other isotope, final result? 2 curies.
Hope this helps
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]
write and balance the cellular respiration equation of glucose compared with the photosynthesis reaction in the terms of reactants products energy flow in the significance of each.
Answer:
Explanation:
.
(i) CH2=CH-CH2-CH=CH,
Give IUPAC name of the compound.
Answer:
The IUPAC name of CH3 – CH2 – CH2 – CH=CH2 is Pent-1-ene.
Which volume is the greatest?
Microliter
Milliliter
Deciliter
Centiliter
Answer:
Deciliter = 0.1 L
Explanation:
The options are unit of volume. In order to determine which is greatest, all the options would be converted to liter.
Microliter = 1e-6 L
Mililiter = 0.001 L
Deciliter = 0.1 L
Centiliter = 0.01 L
Among all the options; Deciliter = 0.1 L is the greatest.
Plzzzzz helpppp meee
Answer:
2 and 5
Explanation:
Something used to power some devices.
Answer:
electricity
Explanation:
or maybe food
1 point
If the element Lithium (Li) were to bond with the element Sulfur (s), what
type of bond can you predict will be formed and why?*
A. Covalent-Li and S are two nonmetals
B. Covalent-Li is a metal and S is a nonmetal
C. Ionic-Li and S are two nonmetals
D. Ionic-Li is a metal and S is a nonmetal
Answer:
C. Ionic-Li and S are two nonmetals
whats the balance to Sr + O, SrO
Answer:
SrO = Sr + O - Chemical Equation Balancer.
Explanation:
A __________________ chemical equation shows that the same number of atoms in the reactants are also in the product.
balanced
rearranged
transferred
beautiful
How many grams of NaOH do you need to dissolve to make 1.55 Liters of a 1.55 Molar solution?
Answer:
Mass = 96g
Explanation:
Molarity = number of moles/volume of solvent
According to the provided information, volume = 1.55L, Molarity = 1.55M
number of moles (n) = molarity × volume
n = 1.55 × 1.55
n = 2.4025
n = 2.40mol
For NaOH, molar mass = 23 + 16 + 1 = 40g/mol
mole = mass/molar mass
Mass = molar mass × mole
Mass = 40 × 2.40
Mass = 96g