1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
likoan [24]
3 years ago
7

Working with one sample at a time, add water to the glass one tablespoon at a time. Water should soak the sample from the bottom

up. Count the number of tablespoons of water it takes to bring the water level up to the top of the sample. Record the amount in the chart.
Calculate the porosity of each sample using this formula, and record the results in the table. “Total sample volume” is the amount of soil, sand, or pebbles in the sample. A half cup is equal to 8 tablespoons.
% porosity = (amount of water added to sample ÷ total sample volume) × 100 Water Added to Sample
% Porosity

Pebbles
Enter your results here:
Soil
Enter your results here:
Sand
Enter your results here:
Chemistry
2 answers:
Vedmedyk [2.9K]3 years ago
7 0

Answer:

This is confusing

but if you still need help, you can search it online

Explanation:

MariettaO [177]3 years ago
3 0
Soil, sand, and pebbles ?
You might be interested in
Which of the following best explains velocity?
zhannawk [14.2K]
Velocity is explained as the *speed and *direction something might move.  Speed means moving and Direction means a certain way (not stationary.)

Hope this helps!
8 0
3 years ago
How many atoms are in sodium hydroxide
Sati [7]

Answer:6 atoms

Explanation:Each NaOH has one Na and one O and one H. Therefore, 2 NaOH has 6 atoms.

3 0
3 years ago
Read 2 more answers
Given these reactions, X ( s ) + 1 2 O 2 ( g ) ⟶ XO ( s ) Δ H = − 668.5 k J / m o l XCO 3 ( s ) ⟶ XO ( s ) + CO 2 ( g ) Δ H = +
qwelly [4]

<u>Answer:</u> The \Delta H^o_{rxn} for the reaction is -1052.8 kJ.

<u>Explanation:</u>

Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.

According to this law, the chemical equation is treated as ordinary algebraic expressions and can be added or subtracted to yield the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes of the intermediate reactions.

The given chemical reaction follows:

X(s)+\frac{1}{2}O_2(g)+CO_2(g)\rightarrow XCO_3(s)      \Delta H^o_{rxn}=?

The intermediate balanced chemical reaction are:

(1) X(s)+\frac{1}{2}O_2(g)\rightarrow XO(s)    \Delta H_1=-668.5kJ

(2) XCO_3(s)\rightarrow XO(s)+CO_2     \Delta H_2=+384.3kJ

The expression for enthalpy of the reaction follows:

\Delta H^o_{rxn}=[1\times \Delta H_1]+[1\times (-\Delta H_2)]

Putting values in above equation, we get:

\Delta H^o_{rxn}=[(1\times (-668.5))+(1\times (-384.3))=-1052.8kJ

Hence, the \Delta H^o_{rxn} for the reaction is -1052.8 kJ.

7 0
3 years ago
Explain the process of groundwater
Anon25 [30]

Answer:

Limestone is easily eroded from above and below.

Explanation:

The Florida bedrock is largely made of limestone. Because limestone is a rock that is easily eroded, the landscape of a great part of Florida is classified as karstic.

Karstic landscapes are dotted by sinkholes, underground rivers, caves, and springs. The more acidic the groundwater or rainwater, the faster and more easily the limestone will succumb to erosion.

In this way, underground rivers, streams, runoff, rain, and underground water pooled in caves have all carved out gaps and caverns in the weak limestone bedrock.

3 0
3 years ago
4. Which is not an example of unbalanced forces acting on an object
natita [175]

Answer:

did you you know

Explanation: thcco lot iof the

5 0
3 years ago
Other questions:
  • An automobile can travel 40.0 miles on one gallon of gasoline how many kilometers per liter is this
    8·2 answers
  • Imagine you could observe the individual atoms that make up a piece of matter and that you observe the motion of the atoms becom
    15·1 answer
  • How many moles are equal to 83.4 L of O2?
    8·1 answer
  • Which of these is an ex<br> example of a composite material?
    9·1 answer
  • Hydrogen bonding is a type of
    14·1 answer
  • 10 elements and what you know about their properties and reactions.
    13·2 answers
  • What is the formula for Iodine Pentafluride?
    14·2 answers
  • Explain at particle level whether seawater is a pure substance or a mixture
    9·1 answer
  • What do ALL states of matter have in common?
    15·1 answer
  • What is the correct Lewis structure for a molecule of ammonia, NH3?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!