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Reptile [31]
3 years ago
10

What can be used to measure the ph of a substance

Chemistry
1 answer:
castortr0y [4]3 years ago
3 0
The pH value can be measured using electrochemical measuring systems, litmus paper, or indicators and colorimeters. The easiest way to take a pH measurement is to use litmus paper or a colorimeter. The advantage of this type of pH measurement is that the pH range is well known and they are easy to apply.
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Examples of chemical changes in nature
matrenka [14]
<span>rusting of ironcombustion (burning) of woodmetabolism of food in the body<span>mixing an acid and a base, such as hydrochloric acid (HCl) andsodium hydroxide (NaOH)</span>cooking an eggdigesting sugar with the amylase in saliva<span>mixing baking soda and vinegar to produce carbon dioxide gas</span>baking a cakeelectroplating a metal<span>using <span>a </span>chemical battery</span>explosion of fireworksrotting bananasgrilling a hamburger<span>milk going sour</span></span>
7 0
3 years ago
Read 2 more answers
What volume of 1.60 M hydrochloric acid solution (HCI) is required to neutralize 48.0 mL of 0.200 M sodium
nexus9112 [7]

Answer:

Volume of HCl require =  6 mL

Explanation:

Given data:

Volume of HCl require = ?

Molarity of HCl solution = 1.60 M

Volume of NaOH = 48.0 mL

Molarity of NaOH = 0.200 M

Solution:

Formula:

M₁V₁     =      M₂V₂

By putting values,

1.60 M×V₁  =  0.200 M×48.0 mL

V₁  =  0.200 M×48.0 mL/1.60 M

V₁  =  9.6 M .mL /1.60 M

V₁  =  6 mL

5 0
3 years ago
A welding torch produces a flame by burning acetylene fuel in the presence of oxygen the energy released from the acetylene fuel
Volgvan
Answer : Chemical energy to thermal energy

Explanation : When the welding torch uses the acetylene fuel for producing flame it is using the chemical acetylene to generate energy in form of light, after the flame is produced the fuel is used for melting a metal which is utilizing the thermal energy. So the ultimate final product is generated from chemical to thermal and so the energy transformation is from chemical energy to thermal energy.
8 0
2 years ago
Read 2 more answers
"how many grams of calcium are consumed when 156.8 ml of oxygen"
Akimi4 [234]
Your question is incomplete. However, I found a similar problem fromanother website as shown in the attached picture.

To solve this problem, you must know that at STP, the volume for any gas is 22.4 L/mol. So,

Moles O₂: 156.8 mL * 1 L/1000 mL* 1 mol/22.4 L = 0.007 moles
Mass calcium: 0.007 mol O₂ * 2 mol Ca/1 mol O₂ * 40 g/mol Ca =<em> 0.56 g Ca</em>

3 0
2 years ago
A carbon atom and a hydrogen atom form what type of bond in a molecule? see concept 2.3 (page 36)
svetoff [14.1K]
A bond is a force of attraction between atoms. They are mainly fthree types of bonds namely; ionic bond, which involves transfer of electrons between a metal and a non metal, covalent bond which occurs between non metal atoms by sharing of electrons, metallic bond which is a bond in the metal structure between metal atoms and the sea of electrons. in this case carbon and hydrogen are non metals hence they will have a covalent bond between their atoms.
7 0
3 years ago
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