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lawyer [7]
4 years ago
11

5 examples of salt and their uses

Chemistry
1 answer:
g100num [7]4 years ago
3 0
Water,food,bimoes,body wash,sweets
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Explain why nervous signals are described as an "electrochemical process." What is electrical and what is
Stolb23 [73]

Answer:

The nervous system operates using an electrochemical process. An electrical charge moves through the neuron itself, and chemicals are used to transmit information between neurons

8 0
3 years ago
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How do you think you can use the calorimeter to compare the specific heat capacities of a substance?
grandymaker [24]
The calorimeter burns the object and tells how many calories are generated when the object is burned.
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4 years ago
A calorimeter holds 50 g water at 22.0°C. A sample of hot iron is added to the water. The final temperature of the water and iro
makkiz [27]

The change in enthalpy associated with the change in the water’s temperature is 1254 J.

<h3>What is specific heat?</h3>

The amount of heat required to increase the temperature of one gram of a substance by one Celsius degree is known as specific heat.

Enthalpy change will be calculated as:

ΔH = -cmΔT, where

m = mass of water = 50g

c = specific heat of water = 4.18J/g°C

ΔT = change in temperature = 28 - 22 = 6 °C

On putting values in the above equation, we get

ΔH = -(4.18)(50)(6) = -1254 J

Hence change in enthalpy of the reaction is -1254 J.

To know more about enthalpy change, visit the below link:

brainly.com/question/11628413

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7 0
2 years ago
3 elements that have similar properties
qwelly [4]

Answer:The elements in the first column of the Periodic Table (other than hydrogen) are known as Group 1A metals, or alkali metals. When you compare the chemical properties of these elements (lithium, sodium, potassium, rubidium, cesium, and francium), what you'll notice is that they are all remarkably similar.

Explanation:

4 0
3 years ago
How many grams of calcium phosphate can be produced when 78.5 grams of calcium hydroxide reacts with excess phosphoric acid?
gogolik [260]
Hello,


You balanced the equation and then you have to set up what is called a psychometric equation for each reactant so that you get the same unit for each in order to compare the two. so for (calcium hydroxide) = 78.5 g ÷ (40.1 + 32 + 2) = 1.0593 mol * Note: I just broke it down in my own science way..u can just get the molar mass of calcium hydroxide which is approx 74 g/mol


Hope this helps
3 0
4 years ago
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