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ollegr [7]
3 years ago
6

State one reason for the color change in beaker A

Chemistry
1 answer:
myrzilka [38]3 years ago
4 0
Because it either acids or base
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How many moles of tin,Sn, are in 2500 atoms of tin?
Assoli18 [71]

Answer:

4.15×10⁻²¹ moles of Sn

Explanation:

This question can be solved by a simple rule of three.

We know that 1 mol contains 6.02×10²³ particles.

In this case, our particles are the atoms, so:

6.02×10²³ atoms / 1 mol . 2500 atoms = 4.15×10⁻²¹ moles.

The knowledge of mol can be applied for everything:

A mol of molecules

A mol of atoms

A mol of a compound

6 0
4 years ago
A student performs an experiment to determine the density of an unknown metal. The student obtains the following data...
Vsevolod [243]

The density of the metal is 7.11 g/mL.

<h3>What is the density of the metal?</h3>

The term density of the metal is defined as the ratio of the mass to the volume of the metal. The volume of the metal was obtained by the displacement method. The volume of water that was displaced is the volume of the metal.

Hence;

Mass of the metal= 56.188g - 1.429g = 54.759 g

Volume of the metal = 33.6mL - 26mL = 7.70 mL

Density of the metal = 54.759 g/ 7.70 mL

= 7.11 g/mL

Learn more about density:brainly.com/question/15164682

#SPJ1

7 0
2 years ago
Which of the following statements is true? Question 4 options: Nuclear decay rates vary with the conditions of the reaction, but
Oksana_A [137]

What is the question

6 0
3 years ago
Read 2 more answers
A airliner has an internal pressure of 1.00 ATM and temperatures of 25°C at take off if the temperature of the airlines routes t
Georgia [21]

Answer:

Explanation:

Using Gay lussac's law equation as follows;

P1/T1 = P2/T2

7 0
3 years ago
Determine the temperature of 1.42 mol of a gas contained in a 3.00-L container at a pressure of 123 kPa
Rashid [163]

Answer:

The temperature is 30,92K

Explanation:

We use the formula PV=nRT. We convert the unit of pressure in kPa into atm.

101,325kPa----1atm

121kPa-------x=(121,3kPax 1 atm)/101,325kPa=1, 2 atm

PV=nRT---->T= (PV)/(RT)

T=(1,2 atm x 3L)/(1,42 mol x 0,082 l atm/K mol )= 30, 91721058 K

6 0
4 years ago
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