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Ahat [919]
3 years ago
7

Factors that remain the same throughout an experiment? What is the word

Chemistry
1 answer:
Jobisdone [24]3 years ago
3 0
Their called constants
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Brad is testing three solutions with litmus paper. After dipping the litmus paper strips in the solutions, he observes two paper
otez555 [7]
After dipping the litmus paper strips in the solutions, the answer to the question is that one is acidic because according to brad's observation on turned red and the others are basic or alkaline with the two papers turning blue.
4 0
3 years ago
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A 5.0 L flask contains 0.60 g of 02 at a temperature of 22*C, what is the pressure inside the flask?
Kruka [31]

Answer:

The pressure inside the flask is 0,09 atm

Explanation:

We calculate the number of moles of O2, we convert the Temperature into unit KELVIN and use the formula of the ideal gases to calculate the pressure:

Weight 1 mol of 02= 15,999g x2= 32g

32g---1mol 02

0,60g---x=(0,60gx1mol O2)/32g= 0,019mol O2

T(K)=273+22=295K

PV=nRT

Px5.0l= 0,019mol x 0,082 lxatm/Kxmolx295 K

P=(0,019mol x 0,082 lxatm/Kxmolx295 K)/5.0l

P=0,09atm

4 0
3 years ago
Silver chloride is formed by mixing silver nitrate and barium chloride solutions. What volume of 1.50 M barium chloride solution
konstantin123 [22]

Answer:

1.22 mL

Explanation:

Let's consider the following balanced reaction.

2 AgNO₃ + BaCl₂ ⇄ Ba(NO₃)₂ + 2 AgCl

The molar mass of silver chloride is 143.32 g/mol. The moles corresponding to 0.525 g are:

0.525 g × (1 mol/143.32 g) = 3.66 × 10⁻³ mol

The molar ratio of AgCl to BaCl₂ is 2:1. The moles  of BaCl₂ are 1/2 × 3.66 × 10⁻³ mol = 1.83 × 10⁻³ mol.

The volume of 1.50 M barium chloride containing 1.83 × 10⁻³ moles is:

1.83 × 10⁻³ mol × (1 L/1.50 mol) = 1.22 × 10⁻³ L = 1.22 mL

8 0
3 years ago
(I have a chemistry study guide that confuses me, anything will help!!!)
krek1111 [17]
4) Example of physical properties: colour, Smell, texture, boiling and melting point density and viscosity.

11) Cations are formed when positively-charged ions and anions negatively-charged ions are formed when a metal loses electrons, and a nonmetal gains those electrons. The electrostatic attraction between the positives and negatives brings the particles together and creates an ionic compound, such as sodium chloride.

12) Quantum mechanical model: The Quantum Mechanical Model. ... The quantum mechanical model of the atom uses complex shapes of orbitals (sometimes called electron clouds), volumes of space in which there is likely to be an electron.

Hope these helped!
3 0
3 years ago
How many grams of water are produced when oxygen reacts with an excessive amount of propane (C3H8)?
lora16 [44]

Answer:

From the equation you will see that 1 mol of propane generates 4 mols of water.

Since the molar mass of water  

M ( H2O)=2×1+16=18g/mol

2 mol propane will generate  

2 ×4×18=144g   of water

Explanation:

Since the molar mass of water  

M ( H2O)=2×1+16=18g/mol

2 mol propane will generate  

2 ×4×18=144g   of water

5 0
2 years ago
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