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exis [7]
3 years ago
9

Can you explain what he did wrong.

Chemistry
1 answer:
vivado [14]3 years ago
7 0
Cant see it well please find better view
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A jet airplane has a velocity of 1145 knots. A knot is 1 nautical mile (nm)/hr. A nautical
ra1l [238]

Answer:

589.038 m/s

Explanation:

i dont know if did this right tho

4 0
2 years ago
In which conditions combination and displacement reaction takes place explain with example.​
expeople1 [14]
<h2>Answer:</h2>

In <u>Combination reaction</u>, two or more elements combined to form one compound of different properties.

  • C(s) + O2(g) ⇢ CO2(g).
  • H2(g) + O2(g) ⇢ H20(l).

In <u>Displacement reation</u>, the high reactive element displaces the low reactive element and formed compound of different properties.

  • Fe(s) + CuSo4(aq) ⇢ FeSo4(aq) + Cu(s).
  • AgNO3(aq) + Cu(s) ⇢ CuNO3(aq) + Ag(s).
8 0
2 years ago
Read 2 more answers
What is the formula for the ionic compound made up of the ions Cd+3 and SO4-2?
Tems11 [23]

Answer: since the sodium ion is Na+, and sulfate is SO4(2-), you'll need 2 sodiums for a sulfate, making sodium sulfate Na2SO4.

Explanation:

7 0
2 years ago
How many moles of propane gas would be present in 11 grams<br> of the gas at standard conditions?
Akimi4 [234]
The molar mass is usually referred to with
M
, while the mass is referred to as
m
. The amount of substance is
n
. This gives you the following relationship:
=
M
=
m
n

Since you have given (C3H8)=11 g
m
(
C
3
H
8
)
=
11

g
and you already looked up (C3H8)=44.1 gmol−1
M
(
C
3
H
8
)
=
44.1

g
m
o
l
−
1
, you can use this formula to determine (C3H8)
n
(
C
3
H
8
)
.

In this question it is quite hard to explain the use of significant figures. Those are used to imply a certain inaccuracy. Not enough information is given by the question, as of how accurate the measurement is. It is a mere exercise of converting one property into another. Here you should not worry about it.
5 0
2 years ago
On a summer day, you take a road trip through Death Valley, California, in an antique car. You start out at a temperature of 21°
MrRissso [65]
<span>There is only one formula to use and we should assume ideal gas. This equation is: PV=nRT. For the following questions manipulate this equation to get the answer.
 1. n = PV/RT = (249*1000 Pa)(15.6 L)(1 m^3/1000 L)/(8.314 Pa-m^3/mol-K))(21+273) = 1.59 mol
 2. P = nRT/V = (1.59)(8.314)(51+273)/(15.6/1000)(1000) = 274.55 kPa
 3. Since the answer in #2 is more than 269 kPa, then the tires will likely burst. 4. Reduce pressure way below the limit 269 kPa.</span>
4 0
3 years ago
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