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Vesna [10]
3 years ago
11

1. Name the following chemicals:

Chemistry
1 answer:
Nataly_w [17]3 years ago
4 0

Answer:

1.

a. Calcium Chloride

b. Sodium Iodide

c. Magnesium Iodide

d. Magnesium Oxide

e. Beryllium Oxide

f. Lithium Sulfide

2.

a. KF

b. H20

c. CaCO3

d. AgNO2

e. C02

f. Ba0

3.

a. Pb0

b. CuCl2

c. Fe2O3

d. NiF2

e. MnS2

f. FeF2

g. CrBr4

hope it helps

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Help I do not understand.
EastWind [94]

Answer:

158.5g Zn are produced

Explanation:

To solve this question we have to find the moles of Aluminium. With the moles of Aluminium and the balanced reaction we can find the moles of Zn and its mass as follows:

<em>Moles Al -Molar mass: 26.98g/mol</em>

43.6g Al* (1mol/26.98g) = 1.616 moles Al

<em>Moles Zn:</em>

1.616 moles Al * (3mol Zn / 2mol Al) =

2.424 moles Zn are produced

<em>Mass Zn -Molar mass: 65.38g/mol-</em>

2.424 moles Zn * (65.38g / mol) =

<h3>158.5g Zn are produced</h3>
6 0
3 years ago
If all of the energy from burning 281.0 g of propane (ΔHcomb,C3H8 = –2220 kJ/mol) is used to heat water, how many liters of wate
lapo4ka [179]

This problem is providing us with the mass of propane, its enthalpy of combustion, and the initial and final temperature of water that can be heated from the burning of this fuel. At the end, the result turns out to be 42.27 L.

<h3>Combustion:</h3>

In chemistry, combustion reactions are based on the burning of fuels by using oxygen and producing both carbon dioxide and water. For propane, we will have:

C_3H_8+5O_2\rightarrow 3CO_2+4H_2O

Hence, we can calculate the heat released from this reaction by using the mass, which has to be converted to moles, and the given enthalpy of combustion:

Q=281.0g*\frac{1mol}{44.09g}*-2220\frac{kJ}{mol}*\frac{1000J}{1kJ}\\ \\ Q=-1.415x10^7 J

<h3>Calorimetry:</h3>

In chemistry, we can analyze the mass-specific heat-temperature-heat relationship via the most general heat equation:

Q=mC\Delta T

Thus, since Q was obtained from the previous problem, but the sign change because the released heat is now absorbed by the water, one can calculate the mass of water that rises from 20.0°C to 100.0°C with this heat:

m=\frac{Q}{C\Delta T} =\frac{1.415x10^7J}{4.184\frac{J}{g\°C}(100.0\°C-20.0\°C)}\\ \\m=4.227x10^4g

Finally, we convert it to liters as required:

V=4.227 x10^4g*\frac{1mL}{1.00g}*\frac{1L}{1000mL}  \\\\V=42.27L

Learn more about calorimetry: brainly.com/question/1407669

4 0
2 years ago
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
Julli [10]

Answer:

Full answer in explanation

Explanation:

  • High Tide - when tides are at their highest elevation
  • Low Tide - when tides are at their lowest elevation
  • Spring Tide - when tides experience the greatest range between high and low; occur at New and Full Moons
  • Neap Tide - when tides experience the least range between high and low; occur at 1st and 3rd Quarter Moons
  • Gravitational Pull - the invisible force that exists between all objects that have mass. The greater the mass, the greater the effect of the force
  • Tide - the daily change in ocean levels due to the gravitational force of the moon and the sun exerted on Earth

Hope this helps!

3 0
3 years ago
Why is cellular reparation important for cells?
sladkih [1.3K]
Respiration aids in replenishing O2 and decrease the CO2 level in the cell. O2 is an important receiver in the oxidative respiration chain in the mitochondria, which is responsible for producing ATP for the cell. ATP can be considered as the “energy currency” of the cell. Many biochemical reactions in the cell requires ATP, including the operations of ion channels, buffer systems, transportation via vesicles, etc. Therefore if there is no O2, the cell cannot produce ATP and will die.
4 0
3 years ago
What is the ionic equation of Aqueous calcium bromide was mixed with aqueous gold(I) perchlorate, and a crystallized gold(I) bro
Bumek [7]

Answer:- 2AuClO_4(aq) + CaBr_2(aq)\rightarrow 2AuBr(s)+ Ca(ClO_4)_2(aq)

Explanations:- It's a double replacement reaction where a precipitate of silver(I)bromide is formed. A dpuble replacement reaction in general looks as AB + CD \rightarrow AD + CB

To balance the equation we need to multiply gold compounds on both sides by 2 and the balanced equation is..

2AuClO_4(aq) + CaBr_2(aq)\rightarrow 2AuBr(s)+ Ca(ClO_4)_2(aq)

6 0
4 years ago
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