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Triss [41]
3 years ago
12

An acid-base indicator is used in what type of reaction?

Chemistry
1 answer:
Temka [501]3 years ago
4 0
Acid - base indicators (also known as pH indicators) are substances which change color with pH. They are usually weak acids or bases. you use them if you want to know if a solution is an acid or it it's a base
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Each iron atom has a mass of about 9 × 10–23 grams. Even a small grain of iron has an incredible number of atoms in it—about 1 x
Tema [17]

Answer:

Explanation:

Each iron atom has a mass of about 9 x 1023 grams. Even a small grain of iron has an incredible number of atoms in. it--about 1 x 1018 atoms in one grain. ...

6 0
2 years ago
Please place correct one with statement. BRAINLIEST FOR BEST ANSWER // 60 POINTS !!
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4 0
3 years ago
Read 2 more answers
Chemical reactions H2SO4 +NaHCO3=​
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Answer:

2NaHCO3 + H2SO4 -----> Na2SO4 + 2H2O + 2CO2.

Explanation:

4 0
3 years ago
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A balloon is filled with 3.50 L of water at 24.0 C and 2.27 atm. If the balloon is placed outdoors on a hot day at a temperature
yan [13]

Answer:

3.51 L

Explanation:

3 0
3 years ago
How many grams of ice at -13 deg C must be added to 711 grams of water that is initially at a temperature of 87 deg C to produce
Basile [38]

Answer:

The answer to your question is m = 4.7 kg

Explanation:

Data

Ice                                   Water

mass = ?                          mass = 711 g

T₁ = -13°C                         T₁ = 87°C

T₂ = 10°C                         T₂ = 10°C

Ch = 2090 J/kg°K          Cw = 4180 J/kg°K

Process

1.- Convert temperature to kelvin

T₁ = 273 + (-13) = 260°K

T₁ water = 87 + 273 = 360 °K

T₂ = 10 + 273 = 283°K

2.- Write the equation of interchange of heat

                 - Heat lost = Heat absorbed

               - mwCw(T₂ - T₁) = miCi(T₂ - T₁)

-Substitution

              - 0.711(4180)(10 - 87) = m(2090)(10 - (-13))

- Simplification

                            228842.46 = 48070m

                            m = 228842.46/48070

-Result

                            m = 4.7 kg

4 0
3 years ago
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