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insens350 [35]
4 years ago
13

Cavendish carried out a second experiment to test the properties of the hydrogen gas produced in the experiment. Was this experi

ment also a chemical reaction? Explain.
Chemistry
2 answers:
Arada [10]4 years ago
7 0

Answer:

Yes, this experiment is also an example of a chemical reaction. The original substance, hydrogen, disappeared, and a new substance, water, was formed.

Explanation:

love history [14]4 years ago
6 0

Yes, this experiment is also an example of a chemical reaction. The original substance, hydrogen, disappeared, and a new substance, water, was formed.

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What type of chemical reaction is AgNO3(aq)+KCL(aq) AgCL(s)+KNO3(aq)​
emmasim [6.3K]

Answer:

double replacement reaction or double displacement reaction,

Explanation:

double replacement reaction, double displacement reaction, is a chemical process involving the exchange of bonds between two non-reacting chemical species which results in the creation of products with similar or identical bonding affiliations

Classically, these reactions result in the precipitation of one product.

in thía case it is AgCl

3 0
4 years ago
You draw back on the piston of a pump and the volume of air in the pump doubles. Which of the following happens?
ohaa [14]

Answer: The correct answer is Option C.

Explanation:

We are given a piston of a pump, which means that there is no loss of the air. and there is a change in pressure and volume but temperature of the system remains constant.

As, the pressure of the system increases, there will be more number of particles. So, the number of collisions per unit area will increase.

\text{Number of collisions}\propto \text{Pressure}

But in the question, volume gets doubled. So, the pressure will be determined by using Boyle's Law:

P\propto \frac{1}{V}

V_2\rightarrow 2V_1

where, V_1\text{ and }V_2 are the initial and final volume respectively.

Putting the change in volume in above equation, we get:

P_2=\frac{1}{2V_1}\\\\P_2=\frac{1}{2}P_1

where, P_1\text{ and }P_2 are the initial and final pressure respectively.

As, the pressure is reduced to half of the initial pressure. So, the number of collisions per unit area will also be reduced to one-half.

Hence, the correct answer is Option C.

5 0
3 years ago
Read 2 more answers
Sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas:NaH (s) H2O (l) → NaOH (aq) H2 (g)A
Anuta_ua [19.1K]

NaH(s)+ H2O (l)=>NaOH(aq)+H2(g)

You want to calculate the mass of NaH, I assume.  Otherwise, the question isn't clear.  It simply says calculate the mass(??)

 

So, calculate the moles of H2 gas that satisfy the conditions of 982 ml at 28ºC and 765 torr.  But you must subtract the vapor pressure of water at 28º to get the actual pressure of the H2 gas.  So, the actual conditions are 982 ml (0.982 L) and 301 K and 765-28 = 737 torr.

PV = nRT

n = PV/RT = (737 torr)(0.982 L)/(62.4 L-torr/Kmol)(301 K)

n = 0.0385 moles H2

 

moles NaH needed = 0.0385 moles H2 x 1 mole NaH/mole H2 = 0.0385 moles NaH required

mass of NaH needed = 0.0385 moles x 24 g/mole = 0.925 g NaH

Brainliest Please :)

7 0
4 years ago
Read 2 more answers
Help me plzz it’s for
Rudik [331]
What is it ? I can’t see
5 0
3 years ago
What is the first step in creating a Lewis structure for a molecule?
lilavasa [31]
You should first count all the valence electrons. Then draw the central atom and single bonds to the rest (then go from there)
4 0
3 years ago
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