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irga5000 [103]
4 years ago
13

Which is true about scientific knowledge

Chemistry
2 answers:
Zinaida [17]4 years ago
7 0
A is the correct answer
Grace [21]4 years ago
4 0
A because scientific theories can be disproven. Scientific knowledge can’t be.
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During one researcher's experiment, the total mass of the gas-generating solid and entire assembly was 52.1487g before the react
irinina [24]

Answer:

43.93 g/mol

Explanation:

The mass of the gas before reaction = 52.1487 g

The mass of the gas after reaction = 52.1098 g

Mass of gas generated = 0.0389 g

Moles of the gas = 8.854\times 10^{-4}\ moles

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Molar\ mass = \frac{Mass\ taken}{Moles}

Molar\ mass= \frac{0.0389\ g}{8.854\times 10^{-4}\ moles}

Molar mass of the gas = 43.93 g/mol

7 0
4 years ago
2NH3 → N2 + 3H2 If 2.22 moles of ammonia (NH3) decomposes according to the reaction shown, how many moles of hydrogen (H2) are f
Rashid [163]

Answer:

C

Explanation:

According to the mole ratio, using 2NH3 will give you 3H2. Which means in order to find the moles of H2 you would only need to divide 2 and multiply 3 to get the amount of moles of H2 produced.

7 0
3 years ago
If earth did not rotate what would happen to the hlobal wind
Readme [11.4K]
It would probably stop moving. Earth has motion and we do do. without the world moving, there would be No wind at all.
8 0
3 years ago
A student listed three ways to predict if a bond is ionic.
natka813 [3]
1 and 3 only because metal are easily to loss electron while non metal are difficult to loss electron that's why it called heavy elements.
4 0
3 years ago
What is the oxidizing agent in the following equation? Al (s) + 3 Ag+ (aq) produces Al^+3 (aq) + 3 Ag (s)
Keith_Richards [23]

Answer:

Ag is the oxidizing agent

Explanation:

oxidizing agent in the following equation?

Al (s) + 3 Ag+ (aq) = Al+3 (aq) + 3 Ag (s)

Left side

Al = 1

Ag = 3

Right Side

Al = 1

Ag = 3

So it's balanced already good.

Define

oxidizing agent = An oxidizing agent is the substance that gains electrons and is reduced in a chemical reaction.

Al is the reducing agent.

Ag is the oxidizing agent

7 0
3 years ago
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