All categories

1 year ago

Which of the following changes would improve the accuracy of the molar mass measurement carried out in this experiment:

1 answer:

4 0

A. would not help and maybe make it harder to get accurate measurements.

b. would make more delta T which will improve its accuracy

c. will also increase delta T.

You might be interested in

Water flows over Niagara Falss at the average rate of 2,400,000 kg/s, and the average height of the falls is about 50 m. Knowing

liberstina [14]

Answer:

1. 176 × 10^12 W ; 78400000000

Explanation:

Given the following :

Fall rate = 2,400,000kg/s

Average height of fall = 50m

Gravitational Potential of falling water = mgh = mass × acceleration due to gravity × height =

How many 15 W LED light bulbs could it power?

Recall : power = workdone / time

Workdone = gravitational potential energy

Mass of water = density * volume

Density of water = 1 * 10^3kg/m^3

Rate of fow = volume / time = 2400000

Hence,

Power = 1000 * 2,400,000 * 9.8 * 50

Power = 1176000000000

Power = 1. 176 × 10^12 W

How many 15 W LED light bulbs could it power?

1176000000000 / 15 = 78400000000

= 78400000000 15 W bulbs

4 0

2 years ago

What is the final acetate ion concentration when 69. g Ba(C2H3O2)2 is dissolved in enough water to make 970. mL of solution? The

Alexeev081 [22]

Answer:

0.56M

Explanation:

1. Dissociation equation

Assuming 100% dissociation, the equation is:

Ba(C₂H₃O₂)₂ → Ba²⁺ + 2C₂H₃O₂⁻

↑

acetate ions

2. Molarity

Calculate the molarity, M, of the solution:

M = n / V(in liters)

n = mass in grams / molar mass

n = 69.g / 255.415g/mol = 0.27015 mol

M = 0.27015mol / 0.970liter = 0.27850 mol/liter ≈ 0.28M

3. Acetate ions

From the chemical equation, 1 mol of dissolved Ba(C₂H₃O₂)₂ produces 2 acetate ions in solution.

Thus, 0.28 mol/liter × 2 = 0.56 mol/liter = 0.56M ← answer

8 0

2 years ago

Name the type of reaction and give the coefficients needed to balance the following skeleton reaction: ___Mg + ___Fe2O3 → ___Fe

Katen [24]

the answer is c a tries to trick people by using the same numbers

6 0

2 years ago

Read 2 more answers

The electron configuration of an element is 1s22s22p4. Describe what most likely happens when two atoms of this element move tow

ahrayia [7]

When two atoms of this element move towards each other, they will combine in a covalent bond to form a diatomic molecule.

Looking at the electron configuration of the atoms; 1s2 2s2 2p4, we can see that these are atoms of elements in group 16. The elements in group 16 has a general outer electronic configuration of ns2np4. They have a valency of 2.

When two atoms of this element approach each other, they will combine in a covalent bond to form a compound. If this element is depicted as X, the compound formed is X2.

Learn more: brainly.com/question/1527403

5 0

1 year ago

Who might benefit financially the most from the EPA’s claim? restaurants that use C-8-coated cookware cookware manufacturers who

kondor19780726 [428]

Cookware manufacturers who make pans out of steel only because if C-8 is discontinued then people would have no choice but to buy steel pans. The steel pan manufacturers would in return receive a lot of money

8 0

2 years ago

Read 2 more answers