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charle [14.2K]
3 years ago
6

Perform the following

Chemistry
1 answer:
strojnjashka [21]3 years ago
7 0

Answer:

4 sig figs: 20.18

Explanation:

the smallest amount of digits was 4 in the expression

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What is the density of a 5 mL sample of 1.95g of Gold
insens350 [35]

Answer:

density=mass/volume

=1.95/5 = 0.39 g(mL)-¹

7 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
4 years ago
A material you are testing conducts electricity but cannot be pulled into wires. It is most likely a _____. metal nonmetal metal
nikklg [1K]
The correct answer for the question that is being presented above is this one: "metal." <span>A material you are testing conducts electricity but cannot be pulled into wires. It is most likely a metal. This metal is a good testing for conductivity of an electricity but cannot be pulled into wires.</span>
3 0
3 years ago
Write a summary paragraph discussing this experiment and the results. Use the following questions and topics to help guide the c
erastovalidia [21]

What is the experiment that is to be discuss/

5 0
3 years ago
Several properties of water are shown. Classify each property as a physical property or a chemical property.
34kurt

Chemical property:

  • Can be split into hydrogen and oxygen
  • Reacts with certain metals

Physical property:

  • Is liquid at room temperature
  • Has a density of 1.0 g/cm³
7 0
2 years ago
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