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lisabon 2012 [21]
3 years ago
5

How much force is required to accelerate a 2 kg mass at 3 m/s²?

Chemistry
1 answer:
Aleksandr [31]3 years ago
7 0

Answer:

6 N

Explanation:

Force (Newtons) = mass (kg) times acceleration (m/s2)

2 kg x 3m/s2 = 6 kg/m/s2

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Electrolysis breaks down water to form hydrogen and oxygen gas. The word equation that represents this reaction is: water
Evgen [1.6K]

Answer:

When a reduction reaction and an Oxidation reaction takes place due to passing of current through water the molecules of water split into the compounds. Where it is made up of hydrogen in its state of gas and also Oxygen in its state of gas this method is most vastly is known as electrolysis.

In this process a certain direct current is passed from inside water. This direct current value can be near about 1.23 voltages the reaction that happens inside is given below.

           2 Water---> Oxygen + 4 hydrogen ions + 4 Electrons

            2 Hydrogen ions + 2 electrons ----> hydrogen gas  

6 0
3 years ago
A typical amount of 99mtc injected for medical imaging is 15.0mci. convert this to decays per second, also called becquerels (bq
Maurinko [17]
We are asked in the problem to convert teh unit mci or millicurie to another unit of radioactivity, becquerel. The conversion to be used in this case is <span>1 millicurie [mCi] = 37,000,000 becquerel [Bq] .The problem gives 15 mCi which when multiplied to </span>37,000,000 is equal to 5,550,000,000 bQ
3 0
3 years ago
Read 2 more answers
Lab: Plate Boundaries and Movement
Anvisha [2.4K]

The correct answer is C. As heated material gets closer to the surface, it begins to cool.

Explanation:

Convection currents involve the flow and movement of particles in gases or liquids due to changes in temperature and density. This occurs on the Earth's mantle, which is partially liquid and it is located between the core (center of Earth) and the crust composed of plates.

In this way, molten material that is near the core heats and rises as it is less dense, but once it reaches the crust it cools, and after some time it sinks again as the magma increases its density. This cycle is constant and causes the movement of the plates in the crust, that might move apart or toward other plates. According to this, the only accurate statement is "As heated material gets closer to the surface, it begins to cool".

8 0
3 years ago
5)
Kryger [21]

The empirical formula : C₁₂H₄F₇

The molecular formula : C₂₄H₈F₁₄

<h3>Further explanation</h3>

mol C (MW=12 g/mol)

\tt \dfrac{18.24}{12}=1.52

mol H(MW=1 g/mol) :

\tt \dfrac{0.51}{1}=0.51

mol F(MW=19 g/mol)

\tt \dfrac{16.91}{19}=0.89

mol ratio of C : H : O =1.52 : 0.51 : 0.89=3 : 1 : 1.75=12 : 4 : 7

Empirical formula : C₁₂H₄F₇

(Empirical formula)n=molecular formula

( C₁₂H₄F₇)n=562 g/mol

(12.12+4.1+7.19)n=562

(281)n=562⇒ n =2

Molecular formula : C₂₄H₈F₁₄

6 0
3 years ago
A reaction requires 22.4l of at stp. You have 32.0l of gas at 398k and 105.6 kpa. Will you have enough gas to carry out the reac
Morgarella [4.7K]
<span>Answer: FALSE:

Explanation:

A reaction requires 22.4l of at STP. You have 32.0l of gas at 398k and 105.6 kpa.

1) STP stands for standard temperature and pressure.

2) Standard temperature is 0°C or 273.15 K

3) Standard pressure is 1 atm or 1013.25 kPa

4) use the ideal gas equation for both contidions

pV = n RT

=> n * R = pV /T

at STP n * R = 1031.25 kPa * 22.4 liter / 273.15 K = 84.5

at T = 398 K, p = 105.6 kPa, and V = 3.2.0 liter:

n * R = 105.6 kPa * 32.0 liter / 398 K = 8.49

Since R is a constant (the Universal Gases Constant), it is evident that the number of moles in the 32.0 liter of gas, at T = 398 K and P = 105.6 kPa is less than the number of moles of the 22.4 liter gas at STP.

There is not enough gas to carry out the reaction.
</span>
4 0
3 years ago
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