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White raven [17]
3 years ago
9

50 POINTS AND BRAINLIEST

Chemistry
2 answers:
Nuetrik [128]3 years ago
5 0

Answer:

1. D

2.A

3.B

4.B

7.A

8.C

9.A

10.B

12.B

13.B

14.C

Explanation:

I hope these help

Debora [2.8K]3 years ago
4 0

Answer:

The answer is burning wood

Explanation:

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What is the symbol for copper
bekas [8.4K]
The symbol for copper is CU, which means copper cuprum, the Latin word for copper.
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3 years ago
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Reacting 35.4 ml of 0.220 m agno3 with 52.0 ml of 0.420 m k2cro4 results in what mass of solid formed
laila [671]
Answer is: 1.29 grams <span>of solid formed.
</span>Chemical reaction: 2AgNO₃(aq) + K₂CrO₄(aq) → Ag₂CrO₄(s) + 2KNO₃(aq).
n(AgNO₃) = c(AgNO₃) · V(AgNO₃).
n(AgNO₃) = 0.220 M · 0.0351 L.
n(AgNO₃) = 0.0078 mol; limiting reactant.
n(K₂CrO₄) = 0.420 M · 0.052 L.
n(K₂CrO₄) = 0.022 mol.
From chemical reaction: n(AgNO₃) : n(Ag₂CrO₄) = 2 : 1.
n(Ag₂CrO₄) = 0.0078 mol ÷ 2.
n(Ag₂CrO₄) = 0.0039 mol.
m(Ag₂CrO₄) = 0.0039 mol · 331.73 g/mol.
m(Ag₂CrO₄) = 1.29 g.

7 0
3 years ago
Which of the following phenomena would be associated with the Big Bang theory.
Murrr4er [49]

Answer: justin

Explanation:

It is becasue im rich right

3 0
3 years ago
When 8.21 l of c3h8 (g) burn in oxygen, how many liters of oxygen are consumed? all gas volumes are measured at the same tempera
just olya [345]
<span>8.21 L of C3H8(g) Lets take c as the molar volume at that temperature.
    c L <><> 5c L
  C3H8 (g) + 5O2 (g) --> 3CO2 + 4H2O + Q
  8.21 L <><> x L
    x = (8.21 * 5c)/c = 8.21 * 5 = 41.05 L O2 consumed for a 100% yield.</span>
5 0
3 years ago
How many moles of propane (C3H8) are in my grill’s tank if the pressure is 7 atm at a volume of 15L and a temperature of 23˚C?
Nadya [2.5K]

In this situation, we can use the ideal gas equation which is PV = nRT

P = Pressure (atm)

V = Volume (L)

n = moles (mol)

R = constant (0.08206 atm-l/mol-K)

T = Temperature (K) ---> C + 273.15 = K

PV = nRT

n = PV/RT

  = (7atm)(15L) / (0.08206 atm-l/mol-K)(23 + 273.15)

  = 4.32 mol

Hope that helped!!!

7 0
3 years ago
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