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alexira [117]
3 years ago
7

Help me ASAP!!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
oksano4ka [1.4K]3 years ago
6 0
The answer would be A
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Please follow me<br><br><br>What is science ?​
bonufazy [111]
<h2>Explanation:</h2><h3>the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment. </h3>

<h3>"the world of science and technology"</h3><h3>Similar:</h3><h3>branch of knowledge</h3><h3>area of study</h3><h3>discipline</h3><h3>field</h3><h3>a particular area of science.</h3><h3>plural noun: sciences</h3><h3>"veterinary science"</h3><h3>a systematically organized body of knowledge on a particular subject.</h3><h3>"the science of criminology" </h3>

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<h3>Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. ... In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws. </h3>

6 0
3 years ago
Use the following: Chlorine is used to bleach cloth. Excess Chlorine is destroyed by its reaction with Sodium Thiosulfate (Na2S2
vovangra [49]

Answer:

Explanation:

Na₂S₂O₃ + 4Cl₂ + 5H₂O → 2NaHSO₄ + 8HCl.

                4 moles                               8 moles

4 moles of Cl₂ forms 8 moles of HCl

.25 moles of Cl₂ forms 8 x .25 / 4 moles of HCl

HCl formed = .50 moles .

E is the answer .

3 0
3 years ago
The temperature of a sample of water increases from 20°C to 46.6°C as it absorbs 23,639.6 J of heat. What is the mass of the sam
oksano4ka [1.4K]

Answer: 213 g

Explanation:

5 0
3 years ago
A sample of air at 58.6 kPa is expanded from 250 mL to 655 mL. If thetemperature remains constant, what is the final pressure in
kati45 [8]

Answer:

<h2>22.366 kPa</h2>

Explanation:

The final pressure can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we are finding the final pressure

P_2 =  \frac{P_1V_1}{V_2}  \\

From the question

58.6 kPa = 58600 Pa

We have

P_2 =  \frac{58600 \times 250}{655}  =  \frac{14650000}{655}  \\  = 22366.4122... \\  = 22366

We have the final answer as

<h3>22.366 kPa</h3>

Hope this helps you

3 0
3 years ago
You add 7.8 g of iron to 20.70 mL of water and observe that the volume of iron and water together is 21.69 mL . Calculate the de
bixtya [17]
21.69mL - 20.70mL = .99mL Fe
7.8 g / .99 mL = 7.9g/mL 
4 0
4 years ago
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