Answer:
Explanation:
To make it stronger you simply need to add more powdered drink mix or add less water. Concentration is basically the amount of something in something else. In this case, the more powdered mix is in the mixture per liter of water, the higher the concentration. Therefore, increasing the amount of powder mix while maintaining the same amount of water increases the concentration, as well as maintaining the same amount of powder mix but in less water. Anything else would decrease the concentration.
Choose all the answers that apply.
Fluorine (F) has an atomic number of 9 and an atomic weight of 18.99. Fluorine has _____.
at least one isotope
10 neutrons
18 electrons
9 protons
an atomic mass of 19
Answer:
9 protons
Explanation:
By looking at the periodic table, you will see that Fluorine has 9 protons. Since the number of electrons equal the number of protons, Fluorine has 9 electrons as well. Meanwhile, it's mass number of 19, minus 10 neutrons, gives you 9 protons or electrons. Hence, the atom would be Fluorine.
hope u make me brainlesst ʘ‿ʘ
Answer:
i think so for this i will 9 protons . atomic mass is 19. 10 neutrons
In the unbalanced chemical equation shown below, what is the coefficient of aluminum (AI) metal?
Al(s) + O2(g) → Al2O3(s)
Answer : A. 3
Explanation:
3Al(s) + 3O2(g) → 3Al2O3(s)
This is the right Answer :3
I hope you are having a great day :3
someone help me with these pls
What is the percent composition by mass of chlorine in LiCI
Answer: Lithium (Li) 16.373%
Chlorine (Cl) 83.627%
Explanation:
what is the coefficient for water after the equation is balanced?
Answer:
1
Explanation:
Orange juice is a mixture of several substances, including water, sucrose, and citric acid. If a scientist studies samples of many brands of orange juice, which finding is most likely?
A. The samples contain the same substances in a variety of proportions.
B. The samples contain the same substances in a fixed proportion.
C. The water in each sample has a unique set of properties.
Answer:
A. The samples contain the same substances in a variety of proportions.
Explanation:
What volume would be needed to prepare 375 mL of a .45 M CaCl2 using only a solution of 1.0 M CaCl2 and water?
Answer:
168.75 ml
Explanation:
M1V1=M2V2
375ml*.45M=1M*V2
Which of the following reactions is balanced?
Answer:
D
Explanation:
Because it has equal number of elements on each side of the arrow
what are the chemical names for KF
HELP ME PLEASE. no links.
Answer:
Experimental group
Explanation:
i hopes this helps let me know if im wrong:)
A solid calcium metal reacts with molecular oxygen.
WORD EQUATION =
CHEMICAL EQUATION =
how much energy is required to melt 2kg of ice at 0°C?
Answer: Therefore, to melt 2kg of ice 835. 48kJ of heat is required.
Explanation:
I hope this helps!
79.4 grams of C3H8 are consumed with an excess of oxygen in the reaction 1 C3H8 + 5 O2 --> 3 CO2 + 4 H2O. How many moles of oxygen (O2) are consumed in this reaction?How many moles of carbon dioxide (CO2) are formed in this reaction? &
How many moles of water (H2O) are formed in this reaction?
Answer:
II would say there is co2 so i would say 30.4
Explanation:
Hope this helps
Please help I need on this please and thank you
Explanation:
amount of baking soda = 2.01 g
---> 2.01 g NaHCO3 × (1 mol NaHCO3/84.007 g NaHCO3)
= 0.024 mol NaHCO3
mass of the product = 1.28 g
Possible reactions:
NaHCO3(s) ---> NaOH(s) + CO2(g)
0.024 mol NaHCO3 × (1 mol NaOH/1 mol NaHCO3)
= 0.024 mol NaOH × (39.997 g NaOH/1.mol NaOH)
= 0.96 g NaOH
2NaHCO3(s) ---> Na2O(s) + 2CO2(g) + H2O(g)
0.024 mol NaHCO3 × (1 mol Na2O/2 mol NaHCO3)
= 0.012 mol Na2O × (61.9789 g Na2O)
= 0.73 g Na2O
2NaHCO3(s) ---> Na2CO3(s) + CO2(g) + H2O(g)
0.024 mol NaHCO3 × (1 mol Na2CO3/2 mol NaHCO3)
= 0.012 mol Na2CO3 × (105.9888 g Na2CO3/1 mol Na2CO3)
= 1.27 g Na2CO3
Conclusion:
Based on the mass of the product in the crucible and comparing it with the predicted product mass in different reactions, I conclude that Na2CO3 is the most likely product in the crucible.
what is the [H+] concentration of a solution with a pH of 3.78
Answer:
[H+] = 1.66 x [tex]10^{-4}[/tex]
Explanation:
To find the [H+] concentration of a solution, we can use the formula:
[tex][H+] = 10^{-pH}[/tex]
Let's plug in the pH.
[tex][H+] = 10^{-3.78}[/tex]
Evaluate the exponent.
[H+] = 1.66 x [tex]10^{-4}[/tex]
Hope this helps!
C + O = Co
C + 2O = Co2
law of multiple proportions
sort out
Answer:
"When two or more elements combine to form more than one compound, the mass of one of them, which joins the fixed mass of the other, is in relation to whole numbers and simple" Example: The carbo
Identifying organic compounds
Answer:
Is there another picture with the #'s in the boxes
Explanation:
both sides in the war used military observers in hydrogen-filled balloons to watch the enemy's movements
Answer:
Yes.
Explanation:
Hydrogen-filled balloons were widely used by the militaries during World War I (1914–1918). The main purpose of these hydrogen-filled balloons to detect movements of enemy troops and to provide direction to the artillery fire. Balloons were the targets of opposing aircraft because they knew the purpose of these balloons so they hit it whenever seen by the enemies so we can say that both sides used hydrogen-filled balloons as military observer to watch the enemy's movements.
answer asap
Food caught on fire on a restaurant's stove. How much thermal energy was present?
A. only a little compared to the total amount of energy
B. a lot of the energy was thermal
C. none of the energy was thermal
D. it was mostly potential energy, not thermal
When iron combines with oxygen gas and forms rust, the total mass of the products...
is the same as the mass of the reactants.
is less than the mass of the reactants.
depends on the reaction conditions.
is greater than the mass of the reactants.
If a gas occupies 2.3 liters at a pressure of 1.9 atm, what will be its volume at a
pressure of 3.8 atm?
Answer:
Option C (1.2 L) is the correct option.
Explanation:
The given values are:
Pressure,
[tex]P_1=1.9 \ atm[/tex]
[tex]P_2=3.8 \ atm[/tex]
Volume,
[tex]V_1=2.3 \ L[/tex]
[tex]V_2=?[/tex]
As we know,
The gas equation is:
⇒ [tex]PV=nRT[/tex]
At constant temperature,
⇒ [tex]P_1 V_1=P_2 V_2[/tex]
or,
⇒ [tex]V_2=\frac{P_1 V_1}{P_2}[/tex]
By substituting the values, we get
⇒ [tex]=\frac{1.9\times 2.3}{3.8}[/tex]
⇒ [tex]=\frac{4.37}{3.8}[/tex]
⇒ [tex]=1.15 \ L[/tex]
or,
⇒ [tex]=1.2 \ L[/tex]
LiOH + KCl ----> LiCl + KOH 5.00 grams of LiOH react with 3.50 grams of KCl and 1.50 grams of LiCl are produced. What is the precent yield of LiCl?
Answer:
The percentage yield of LiCl is approximately 75.365%
Explanation:
The given chemical reaction is presented as follows;
LiOH + KCl → LiCl + KOH
1 ole of LiOH reacts with 1 mole of KCl to produce 1 mole of LiCl and 1 mole of KOH
The mass of LiOH in the reaction = 5.00 grams
The mass of KCl in the reaction = 3.50 grams
The mass of LiCl produced in the reaction = 1.50 grams
The number of moles, n = Mass/(Molar mass)
The molar mass of LiOH = 23.95 g/mol
The number of moles of LiOH in the reaction, n = 5.00 g/(23.95 g/mol) ≈ 0.209 moles
The molar mass of KCl = 74.5513 g/mol
The number of moles of KCl in the reaction, n = 3.50 g/(74.5513 g/mol) ≈ 0.0469475281 moles
The molar mass of LiCl = 42.394 g/mol
The number of moles of LiCl produced, n = 1.50 g/(42.394 g/mol) ≈ 0.035382 moles
Therefore, the limiting reactant = KCl with 0.0469475281 moles
We get;
0.0469475281 moles of LiOH should react with 0.0469475281 moles of KCl to procude 0.0469475281 moles of LiCl and 0.0469475281 moles of KOH
The percentage yield is given as follows;
[tex]Percentagee \ yield = \dfrac{Actual \ yield}{Theoretical \ yield } \times 100[/tex]
The actual yield of LiCl ≈ 0.035382 moles of LiCl
The theoretical yield of LiCl ≈ 0.0469475281 moles of LiCl
[tex]\therefore The \ percentage \ yield \ of \ LiCl = \dfrac{0.035382 }{0.0469475281 } \times 100 \approx 75.365 \%[/tex]
The percentage yield of lithium chloride, LiCl ≈ 75.365%.
a solution contains 32.7 g H3PO4 in 455 mL of solution. Calculate its molarity
A solution contains 32.7 g of H₃PO₄ in 455 mL of solution, then the molarity of solution is 0.733 M.
How we calculate molarity?
Molarity of solution will be calculated as:
M = n/V, where
V = volume
n = moles of solute which can be calculated as:
n = W/M, where
W = given mass
M = molar mass
First we calculate the moles of 32.7g of H₃PO₄ as:
moles = 32.7g / 98 g/mol = 0.333 moles
Now we calculate molarity of H₃PO₄ in 0.455 volume as:
M = 0.333 / 0.455 = 0.733M
Hence, molarity is 0.733M.
To know more about molarity, visit the below link:
https://brainly.com/question/16343005
Cu2O + C -> Cu + CO2 balanced equation
Answer:
2Cu2O + C --> 4Cu + CO2
Explanation
The Law of conservation of Mass states You can not destroy or create math in a chemical reaction, meaning you must have the same amount at the beginning and the end. This equation keeps the same amount of atoms on both sides.
Answer: Yes, it is a balanced equation.
Explanation:
https://chemequations.com/en/?s=Cu2O+%2B+C+%3D+Cu+%2B+CO2
This is where I got the answer so you know. Hope this helps :)
What happens where Earth's plates meet?
Answer:
an earthquake
Explanation:
the tectonic plates rub together sending shockwaves
1: A50 L balloon is at 4 atm of pressure. What is the volume at 2 atm of pressure?
Answer:
100 L
Explanation:
Use Boyle's Law, p1v1 = p2v2.
p1 = 4 atm
v1 = 50L
p2 = 2 atm
v2 = ?
p1v1 = p2v2
(4 atm) (50L) = (2 atm) (v2)
v2 = (4 atm)(50L) / (2 atm) = 100 L
what is difference between asexual or sexual reproduction
Explanation:
asexual reproduction involves 1 parent and produces offspring that are genetically identical to each other and parent.
Sexual reproduction involves 2 parents and produces offspring that are genetically unique.
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Answer:
haksonnehejskznnd
Explanation:
jdudubebs sbit
Which of the following statements apply to an ionic bond?
Check all that apply.
O A. It is made of two metal atoms.
B. Electrons are shared equally in it.
O C. It is made of two atoms with a large difference in
electronegativity.
O D. It is made of a positive cation and a negative anion.
Answer:
the result is C and D. those are the ansers
Answer:C & D
Explanation:
Just took the test
find the volume of a gas if 3.6 mols of the gas is at STP
Answer:
81 L gas
General Formulas and Concepts:
Ideal Gas Law
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KStoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
[Given] 3.6 mols gas at STP
[Solve] volume (L) of gas
Step 2: Convert
[DA] Set up: [tex]\displaystyle 3.6 \ mol \ gas(\frac{22.4 \ L \ gas}{1 \ mol \ gas \ at \ STP})[/tex][DA] Multiply [Cancel out units]: [tex]\displaystyle 80.64 \ L \ gas[/tex]Step 3: Check
Follow sig fig rules and round. We are given 2 sig figs.
80.64 L gas ≈ 81 L gas