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artcher [175]
3 years ago
6

Which of these statements indicates an experiment is systematic?

Chemistry
1 answer:
qwelly [4]3 years ago
8 0

Answer:

D. The experiment includes a good plan for what measurements to take.

Explanation:

You might be interested in
What mass of CCl4 is required to prepare a 0.25 m solution using 115 g of hexane? (molar mass of ccl4 = 153.81 g/mol and molar m
natka813 [3]

4.42 g mass of CCl4 is required to prepare a 0.25 m solution using 115 g of hexane.

It's easy to find the molecular mass of a compound with these steps: Determine the molecular formula of the molecule. Use the periodic table to determine the atomic mass of each element in the molecule. Multiply each element's atomic mass by the number of atoms of that element in the molecule.

The molar mass of any compound can be found out by adding the relative atomic masses of each element present in that particular compound.

Hexane is an organic compound, a straight-chain alkane with six carbon atoms and has the molecular formula C₆H₁₄.

Therefore,

⇒ 0.115 g of Hexane x (0.25 mol CCl4/1 mol hexane) x (153.81 g of CCl4/1 mol CCl4) = 4.42g CCl4.

To learn more about CCL4 and Hexane here

brainly.com/question/15156642

#SPJ4

7 0
2 years ago
Question 11 of 16 V
user100 [1]

Answer:

A

Explanation:

How many moles of HCI will just react with 0.424 g Ba(OH)2?

A) 4.94 x 10 mol

4 0
3 years ago
Please help me!!!!
miv72 [106K]

Answer:

0.8g/ml

Explanation:

d=m/v

d=20/25

d=0.8

7 0
3 years ago
Air enters a diffuser witha velocity of 400 m/s, a pressure of 1 bar and temperature of 25 C. It exits with a temperature of 100
ANEK [815]

Answer:

Exit velocity of air is 96.43 m/s.

Explanation:

Given that

V_1=400\ m/s

T_1=25C

T_2=100C

For air

C_p=1.005\ KJ/kg.K

Now from first law of thermodynamics for open system at steady state

h_1+\dfrac{V_1^2}{2000}+Q=h_2+\dfrac{V_2^2}{2000}+w

For diffuser

h_1+\dfrac{V_1^2}{2000}=h_2+\dfrac{V_2^2}{2000}

We know that

h=C_pT

h_1+\dfrac{V_1^2}{2}=h_2+\dfrac{V_2^2}{2000}

1.005\times 25+\dfrac{400^2}{2000}=1.005\times 100+\dfrac{V_2^2}{2}

V_2=96.43\ m/s

So the exit velocity of air is 96.43 m/s.

8 0
4 years ago
What location around the world are volcanoes consistently found
Nata [24]

The location that volcanoes are consistently found in the world is near the Ring of Fire so the answer would basically be "Continent-ocean boundaries".

4 0
4 years ago
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