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
Stells [14]
3 years ago
11

Jamal wants to make a model of a hill near his house to test the way the slope affects how rain runs down the hill. Which type o

f model would be best for what he needs?
Chemistry
2 answers:
Scrat [10]3 years ago
8 0

a scale-model mound made of the same materials that make the real hill

Nikitich [7]3 years ago
4 0

a scale-model mound made of the same materials that make the real hill

You might be interested in
How can we use the mole to convert between the mass and the volume of a substance?
aleksandr82 [10.1K]

Answer:

1mole= the ar/mr of substance and  1mole=24dm^3 of any gas at room temp

Explanation:

3 0
3 years ago
Summarize the characteristics of each type of element below
aniked [119]
What are the elements?
7 0
3 years ago
Using two different instruments I measured the length of my foot to be 27 centimeters and 27.00 centimeters. Explain the differe
Sophie [7]

Answer:

As you used two diferent instruments, one is more sensitive than the other.

Explanation:

The sensitivity of an instrument is the minimum amount of magnitude that can be  differentiate a measurement system.

In method A, you got 27 cm, so if in method B, you got 27.00, method B is more sensitive. It's like saying that one system measures more than the other

8 0
3 years ago
Now they feel it is best to have you identify an unknown gas based on its properties. Suppose 0.508 g of a gas occupies a volume
pishuonlain [190]

Answer: Option (b) is the correct answer.

Explanation:

The given data is as follows.

             mass = 0.508 g,               Volume = 0.175 L

             Temperature = (25 + 273) K = 298 K,       P = 1 atm

As per the ideal gas law, PV = nRT.

where,  n = no. of moles = \frac{mass}{\text{molar mass}}

Hence, putting all the given values into the ideal gas equation as follows.

               PV = \frac{mass}{\text{molar mass}} \times RT            

           1 atm \times 0.175 L = \frac{0.508 g}{\text{molar mass}} \times 0.0821 L atm/ K mol \times 298 K  

                            = 71.02 g

As the molar mass of a chlorine atom is 35.4 g/mol and it exists as a gas. So, molar mass of Cl_{2} is 70.8 g/mol or 71 g/mol (approx).

Thus, we can conclude that the gas is most likely chlorine.

4 0
3 years ago
Given 50.0 grams of Strontium, find grams of Phosphorus required for complete reaction
Sveta_85 [38]

Answer:

                     Mass = 11.78 g of P₄

Explanation:

                     The balance chemical equation is as follow:

                                          6 Sr + P4 → 2 Sr₃P₂

Step 1: Calculate moles of Sr as;

Moles = Mass / M/Mass

Moles = 50.0 g / 87.62 g/mol

Moles = 0.570 moles

Step 2: Find moles of P₄ as;

According to equation,

6 moles of Sr reacted with  =  1 mole of P₄

So,

0.570 moles of Sr will react with  =  X moles of P₄

Solving for X,

X = 1 mol × 0.570 mol / 6 mol

X = 0.0952 mol of P₄

Step 3: Calculate mass of P₄ as,

Mass = Moles × M.Mass

Mass = 0.0952 mol × 123.89 g/mol

Mass = 11.78 g of P₄

8 0
3 years ago
Other questions:
  • 1. Is this equation balanced? Explain your answer. Na + Cl2 → NaCl ?
    10·2 answers
  • Describe how an acidic solution forms when HCI is mixed in water
    8·1 answer
  • (2 points) Well, we might as well try a similar question. Magnesium metal reacts with hydrochloric acid to produce hydrogen gas
    6·1 answer
  • How many moles of H2SO4 are required to completely neutralize 0.10 moles of Ca(OH)2?
    9·2 answers
  • Type of change that doesn't involve the formation of new kind of matter
    14·2 answers
  • Scientists often organize data by constructing a graph what does a graph help scientists do?
    6·2 answers
  • A chemist has 2.0 mol of methanol (CH3OH). The molar mass of methanol is 32.0 g/mol. What is the mass, in grams, of the sample?
    7·2 answers
  • Summarize Le Chatelier’s principle with a general rule. (In the simplest way you can, thanks)
    14·1 answer
  • 2 Equation on chemistry that I have been struggling with, needed some assistance
    8·1 answer
  • How many moles of magnesium are in 3. 01 x 10^22 atoms of magnesium.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!