Answer:
Acids react with carbonates to liberate CO2.
You didn't mention the acid in question.,.
So I'll just pick for myself(HCl) and react with Sodium carbonate
The Equation of reaction would be
2HCl + Na2CO3 ==== 2NaCl + H2O + CO2
It is balanced
Explanation:
Given .... 70g of Sodium carbonate.
Reacting Moles of Na2CO3 = mass/molar mass
Molar Mass of Na2CO3 = 23x2 + 12 + 16x3 =106gmol-¹
Mole = 70/106
= 0.66 moles of Sodium Carbonate (Na2CO3)
Looking at our balanced equation...
1 Mole of Na2CO3 reacts to produce 1mole of CO2
Since Their Mole ratio is equal(1:1)...
It now means that an equal amount of CO2 will be produced
Therefore ..... 0.66moles of Na2CO3 Will produce 0.66moles of CO2
So we now have moles of CO2
Recall ... 1mole of any gas at STP contains 22.4L
Therefore ...
0.66moles will contain
= 0.66 x 22.4L
=14.784L of CO2 will be in the products
i need help on this question
NO LINKS!
Answer:
2 experimental
Explanation:
Is this a neutral atom or a charged ion ? N why
Answer:
Explanation:
Atoms are neutral; they contain the same number of protons as electrons. A neutral sodium atom, for example, contains 11 protons and 11 electrons. Atoms that gain extra electrons become negatively charged.
If you start with 30.0 grams of sodium fluoride, how many grams of magnesium fluoride will be produced?
Answer:
22.2 g of MgF₂
Explanation:
We star from the reaction:
NaF → sodium fluoride
Mg → Magnesium
2NaF + Mg → MgF₂ + 2Na
2 moles of sodium fluoride react to 1 mol of Mg in order to produce 1 mol of magnesium fluoride and 2 moles of sodium.
We convert mass of the reactant to moles:
30 g . 1mol / 41.98 g = 0.715 mol
We assume that Mg is in excess
As ratio is 2:1, if we have 0.715 moles of NaF we may produce the half of moles, of MgF₂
0.715 mol /2 = 0.357 moles of MgF₂
We convert moles to mass: 0.357 mol . 62.30g /mol = 22.2 g
(Thermodynamics question) When dynamite and oxygen create an explosion, the q value for the system (reactants), would be __
a. positive
b. negative
c. zero
Help with questions 3 and 6.
Answer:
for the eqn it should be 2NaCl----> 2Na+ Cl2
Which of the following is true for a heating curve? O A. It shows how the pressure of a substance changes when heated. OB. It shows how the temperature of a substance changes when heated. ОС. It shows how the volume of a substance changes when heated. OD It shows how the mass of a substance changes when heated.
Answer:
Changes to the amount of energy through thermal transfer is most appropriate to show changes in the to temperatures of the substances as there is an increase in the thermal energy in the closed system. The increase in molecular energy through the heating process is what happens when the energy is transferred from one compound to another.
S + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2O
In the above equation, how many grams of water can be made when 1.1 moles of HNO3 are consumed?
Answer:
[tex]fro \: the \: equation : \\ 6 \: moles \: of \: nitric \: acid \: produce \: 2 \: moles \: of \: water \\ 1.1 \: moles \: of \: nitric \: acid \: react \: with \: ( \frac{1.1}{6} \times 2) \: moles \\ = 0.367 \: moles \: of \: water \\ 1 \: mole \: of \: water \: weighe \: 18 \: g \\ 0.367 \: moles \: will \: weigh \: ( 0.367 \times 18) \: g \\ = 6.6 \: g \: of \: water[/tex]
Which of the following characteristics describes an acid? (Aks 4b)
Answer:
B: turns litmus red
Explanation:
Looking at the given options;
An acid tastes sour and not bitter and so option A is not correct.
Acid turns blue litmus paper red and not any litmus paper. Thus option B is correct.
Acid has a PH < 7. Thus option C is not correct.
An acid feels just wet while it is a base that feels slippery to touch. Option D is not correct.
if 67.8 moles of gas was measured out into a helium balloon how many molecules would be present within the balloon
Answer:
[tex]4.08x10^{25} molecules[/tex]
Explanation:
Hello there!
In this case, since the understanding of the mole-molecules relationships is analyzed via the Avogadro's number:
[tex]1mol=6.022x10^{23}molecules[/tex]
Next, we can solve the following setup by starting with the 67.8 moles of helium and obtaining the required molecules as follows:
[tex]67.8mol*\frac{6.022x10^{23}molecules}{1mol}\\\\=4.08x10^{25} molecules[/tex]
Best regards!
This piece of paper has been tuned into a work of art with many vibrant colors and decorated with multiple shapes, but it is still a piece of paper. Coloring and drawing on paper is an example of the [ Select ] properties of paper.
Answer:
Physical property
Explanation:
As the piece of paper is being colored, no change has really occurred, in the end it's still a paper, unless a substance was mixed with it or etc then it would be considered to be a chemical property but not in this case.
a. 35
b.65
c.81
d.180
I think it's 80 . 12
pls tell me if correct
A rocket travels in a straight line at a speed of 5,000 m/s. After 60 seconds, it is 10,000 m/s. What is the rocket’s acceleration?
Answer:
83.33 m/s^2
Explanation:
Acceleration is defined as the rate of change of velocity.
So if we know that at the beginning an object has a velocity V1.
And after a time T, the object has a velocity V2, then the average acceleration in that time interval can be calculated as:
A = (V2 - V1)/T
In this case, we know that the initial speed was 5,000 m/s
And after a time of 60 s, the velocity is 10,000 m/s
Then we have:
V1 = 5,000 m/s
T = 60s
V2 = 10,000 m/s
Then the average acceleration is:
A = (10,000 m/s - 5,000 m/s)/60s = 83.33 m/s^2
which word means the opposite of boiling melting
Which is an example of a nonaqueous solution?
gasoline
fog
mayonnaise
fruit juice
Answer: Gasoline
Explanation: Siri said so
The non-aqueous means it does not contain water. Among the given options gasoline is an example of a non-aqueous solution. The correct option is A.
What is a non-aqueous solution?The solution which is obtained by dissolving solute in any liquid other than water is defined as the non-aqueous solution. If solute is dissolved in solvent like benzene, alcohol, ether, carbon disulphide, acetone etc. forms a non aqueous solution.
The major difference between the aqueous and non-aqueous solution is that the solvent of an aqueous solution is water whereas in non-aqueous solutions, the solvent is any substance other than water.
The solvent of non-aqueous solution can be polar or nonpolar and depending on the polarity the solutes dissolve in the solvent. Here gasoline is an example of the non-aqueous solution. The gasoline is a crude oil which does not include water as an ingredient.
Thus the correct option is A.
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How many moles of hydrogen gas (H2) are required to react completely with 0.75 moles of nitrogen
gas (N2)?
Answer:
2.25 moles H2
Explanation:
The equation N2+ 3H2 > 2NH3
1 mol of N2 gives 3 mol of H2
Then
. 75 mole N2 give 3*.75 = 2.25 moles of H2
A compound of nitrogen and oxygen is about 76 g/mol.Which is its formula?
Answer:
N2O3
Explanation:
What would make oppositely charged objects attract each other more?
increasing the positive charge of the positively charged object and increasing the negative charge of the negatively
charged object
decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively
charged object
increasing the distance between the positively charged object and the negatively charged object
maintaining the distance between the positively charged object and the negatively charged object
Answer: increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object.
Explanation:
edge
Answer:
Your answer is A.
Explanation:
Metals, Non-Metals, Metalloids
Students were asked to analyze the descriptors of the following elements.
What is the mole fraction of each component of a gas mixture that contains sulfur trioxide at a pressure of 1.45 atm and sulfur dioxide at a pressure of .32 atm
Answer:
[tex]x_{SO_3}=0.82\\\\x_{SO_2} =0.18\\[/tex]
Explanation:
Hello there!
In this case, according to the given information, it is possible for us to solve this problem by using the Dalton's law which allows us to calculate the mole fractions by dividing the partial pressures over the total pressure. In such a way, we plug in the given pressures of sulfur trioxide (SO3) and sulfur dioxide (SO2) to obtain:
[tex]x_{SO_3}=\frac{1.45atm}{1.45atm+0.32atm} =0.82\\\\x_{SO_2}=\frac{0.32atm}{1.45atm+0.32atm} =0.18\\[/tex]
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Which of the following is not a natural resource?
A
wind energy
B
wood from trees
С
copper
D
computers
Answer:
computers
Explanation:
What change has occurred since the Industrial Revolution that has potentially caused a change in Earth’s average climate?
Answer:
Greenhouse gases in the atmosphere absorb heat radiation. Human activity has increased greenhouse gases in the atmosphere since the Industrial Revolution, leading to more heat retention and an increase in surface temperatures.
That big lorry hit the new car.change to passive voice
Explain the rise and fall of the kingdom of Aksum
Answer
Rise: The kingdom of D'mt populated the majority of the Northern horn which had developed much agriculture and expansion of trade with other empires like Egypt. After the fall of the D'mt kingdom many small kingdoms took its place and slowly came together as one large kingdom called, Aksum. Aksum rose to power in the first century after the son of a Solomon queen had expanded to the land near the red sea.
Fall: The empire had become isolated from civilizations when it came to trade after battling Arabian armies. Their religion segregated them and caused the downfall of their power over the trading ports on the Red Sea.
For more information, go here: https://storymaps.arcgis.com/stories/9b7b377398724be99a0d94dfa9f55550
Which diagram correctly shows the orbits of the Sun, Earth, and Moon in the geocentric model of the solar system?
Answer:
A.
Explanation:
This is the closest to what Ptolemy drew.
B would have the sun and moon in equal orbits, but the moon changes wouldn't be accounted for
C and D have the sun in the middle, so they are both heliocentric.
The diagram that correctly shows the orbits of the Sun, Earth, and Moon in the geocentric model of the solar system is A and the correct option is option A.
What is Geocentric model of Solar System?In the geocentric model of the solar system, the Earth is considered to be the center of the solar system.
The Moon, the planets, the Sun, and the stars all rotate around the Earth (which stays still), with uniform circular motion. They compose the heavens, which are considered to be ethereal and unchanging.
Therefore, the diagram that correctly shows the orbits of the Sun, Earth, and Moon in the geocentric model of the solar system is A and the correct option is option A.
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What’s the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen?
Which part of the atom is most directly involved in chemical bonding?
Answer:
Electron
Explanation:
Which of these elements would form an ion with a charge of -1?
Group of answer choices
K
C
F
Answer:
k
Explanation:
that is shide rong and shide right
The sun has been up for several hours , and it has been shining on these trees . What can the trees do because they are in sunlight?what does this mean for the number of energy storage molecules in trees?
A. Give off air. Giving off carbon allows them to make energy storage molecules
B.give off. Giving off carbon uses up energy storage molecules
C.take in carbon from the air . The carbon s used to make energy storage molecules
D.take in carbon from the air , the carbon is used to break down energy storage molecules.
E. None of Above.
Which of the following naming systems would you use to nameHClO2?
Question 6 options:
a)
HYDRO________IC ACID
b)
HYDROGEN _________IDE
c)
________________IC ACID
d)
________________OUS ACID
please help balance
_Ch7H16+_O2=_CO2+_H2O
Answer:
C7H16 + 11 O2 → 7 CO2 + 8 H2O
This is an oxidation-reduction (redox) reaction:
7 C-16/7 - 44 e- → 7 CIV (oxidation)
22 O0 + 44 e- → 22 O-II (reduction)
C7H16 is a reducing agent, O2 is an oxidizing agent.
Reactants:
C7H16
O2
Names: Dioxygen source: wikidata, accessed: 2019-09-07, Oxygen source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-07, Oxygen (liquefied) source: ICSC, accessed: 2019-09-04
Appearance: Odourless compressed gas source: ICSC, accessed: 2019-09-04; Liquefied gas. colourless-to-blue extremely cold liquid source: ICSC, accessed: 2019-09-04
Products:
CO2
Names: Carbon dioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, {{plainlist| source: wikipedia, accessed: 2019-09-27, CO2 source: wikidata, accessed: 2019-09-02
Appearance: Colorless gas source: wikipedia, accessed: 2019-09-27; Odourless colourless compressed liquefied gas source: ICSC, accessed: 2019-09-04; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.] source: NIOSH NPG, accessed: 2019-09-02
H2O – Water, oxidane source: wikipedia, accessed: 2019-09-27
Other names: Water (H2O) source: wikipedia, accessed: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed: 2019-09-27, Hydrogen oxide source: wikipedia, accessed: 2019-09-27
Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed: 2019-09-27
Search by reactants (C7H16, O2)
1 O2 + C7H16 → H2O + CO2
2 O2 + C7H16 → H2O + CO
3 O2 + C7H16 → H2O + CO2 + CO
4 O2 + C7H16 → H2 + CO2
Search by products (CO2, H2O)
12345678910...
1 HCl + CaCO3 → H2O + CO2 + CaCl2
2 HCl + NaHCO3 → H2O + CO2 + NaCl
3 O2 + CH4 → H2O + CO2
4 NaHCO3 → H2O + CO2 + Na2CO3
5 H2SO4 + KMnO4 + (COOH)2 → H2O + CO2 + K2SO4 + MnSO4
6 O2 + C3H8 → H2O + CO2
7 H2SO4 + K2CO3 → H2O + CO2 + K2SO4
8 O2 + C2H6 → H2O + CO2
9 CH3COOH + NaHCO3 → H2O + CO2 + CH3COONa
10 HCl + Na2CO3 → H2O + CO2 + NaCl
12345678910...
Search by reactants (C7H16, O2) and by products (CO2, H2O)
1 O2 + C7H16 → H2O + CO2
2 O2 + C7H16 → H2O + CO2 + CO
Explanation: