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3 years ago

Which property of water causes it to cling to the sides of something

1 answer:

7 0

The adhesion of water is the property of water that causes water to be attracted to other substances

Hope this helps :)

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How does a scientist critique another scientist’s conclusion?

Marat540 [252]

by performing more experiments

7 0

3 years ago

A 0.100 L sample of an unknown HNO3 solution required 51.3 mL of 0.250 M Ba(OH)2 for complete neutralization. What is the concen

luda_lava [24]

Answer:

0.257M HNO3

Explanation:

The reaction of HNO3 with Ba(OH)2 is:

2 HNO₃ + Ba(OH)₂ → 2 H₂O + Ba(NO₃)₂

That means 2 moles of HNO3 reacts with 1 mole of Ba(OH)2.

51,3mL of 0.250M Ba(OH)2 are:

0.0513L ₓ (0.250mol / L) = 0.0128moles

Moles of HNO3 are:

0.0128moles Ba(OH)2 ₓ (2 mol HNO3 / 1 mol Ba(OH)2) = 0.0257mol HNO3

As these moles are in 0.100L:

0.0257mol HNO3 / 0.100L = 0.257M HNO3

I hope it helps!

6 0

3 years ago

A 0.1149-g sample of solid magnesium is burned in a bomb calorimeter that has a heat capacity of 1769 J/°C. The calorimeter cont

Andreas93 [3]

Answer:

The heat given off by the burning Mg is 30.5 kJ/grams or 745.5 kJ/mol

Explanation:

Step 1: Data given

Mass of magnesium sample = 0.1149 grams

Molar mass of magnesium = 24.3 g/mol

bomb calorimeter that has a heat capacity of 1769 J/°C

Mass of water = 321 grams

Temperature change = 1.126 °C

Step 2: Calculated heat released

Q = (1769 J/°C * 1.126 °C) + (321 grams * 4.184 J/g°C * 1.126 °C)

Q = 3504.18 J =3.504 kJ

Step 3: Calculate the heat given off by the burning Mg, in kJ/g

3.504 kJ / 0.1149 grams = 30.5 kJ/grams

Step 4: Calculate moles of Magnesium

Moles of magnesium = mass magnesium / Molar mass magnesium

Moles magnesium = 0.1149 grams / 24.3 g/mol

Moles magnesium = 0.0047 moles

Step 5: Calculate the heat given off by the burning Mg, in kJ/mol

3.504 kJ / 0.0047 moles = 745.5 kJ/mol

The heat given off by the burning Mg is 30.5 kJ/grams or 745.5 kJ/mol

8 0

3 years ago

WILL GIVE BRAINLIEST!!!

alekssr [168]

Answer: Temperature and number of moles are the conditions which remain constant in Boyle's law.

Explanation:

Boyle's law states that at constant temperature the pressure of a gas is inversely proportional to the volume of gas.

Mathematically, it is represented as follows.

$P \propto \frac{1}{V}$

As equation for ideal gas is as follows.

PV = nRT

And, at constant temperature the pressure is inversely proportional to volume which also means that number of moles are also constant in Boyle's law.

Thus, we can conclude that temperature and number of moles are the conditions which remain constant in Boyle's law.

5 0

3 years ago

Define and give an example of an acid and of a base.

Debora [2.8K]

A Brønsted-Lowry acid is defined as a compound that gives hydronium ions to another compound—for example, hydrochloric acid gives H+ ions to compounds it reacts with. Brønsted-Lowry bases are compounds that can accept hydronium ions—when ammonia gets a hydronium ion from HCl, it forms the ammonium ion.

5 0

3 years ago