CHEMISTRY HIGH SCHOOL

A substance has a melting point of 0 degrees C and a boiling point of 100 degreesc. The substance is most likely
a. Water
b. Hydrogen
c. Gold
d. Table salt

Answers

Answer 1

Answer: water. Just something you need to memorize

Answer 2

Answer:

Water for sure.

100 degrees Celsius is 212 degrees Fahrenheit

0 degrees Celsius is 32 degrees Fahrenheit.

Be sure to remember that for future events! :)

Related Questions

Based on intermolecular forces, which of these substances would have the highest boiling point?(1) He (3) CH4(2) O2 (4) NH3
What is the half-life of sodium-24? EXPLAIN how you determined your answer.
Unsaturated hydrocarbons react very slowly with bromine. true false
Which of the following is true about the neutrons of an atom?A. The neutrons of an atom are the only subatomic particles that are involved in the interaction between two atoms. B. The neutrons do not affect the mass or stability of an atom's nucleus, but they are involved in most interactions between two atoms. C. The neutrons do not affect how the atom interacts with other atoms, but they do have an effect on the mass and stability of the nucleus.
A solution of HCl has mc012-1. Jpg = 0. 01 M. What is the pH of this solution? Use mc012-2. Jpg. â€""2 â€""1 1 2.

Determine the pH of a 5x10^-4 M solution of Ca(OH)2

Answers

Ca(OH)₂ ==> Ca²⁺ + 2 OH-

Ca(OH)₂ is strong Bases

Therefore, the [OH-] equals 5 x 10⁻⁴ M. For every Ca(OH)₂ you produce 2 OH⁻.

pOH = - log[ OH⁻]

pOH = - log [ 5 x 10⁻⁴ ]

pOH = 3.30

pH + pOH = 14

pH + 3.30 = 14

pH = 14 - 3.30

pH = 10.7

hope this helps!

What is the balanced equation of Ca3(PO4)2+ SiO+ C---> P+ CaSiO+ CO

Answers

Balanced chemical equation:

1 Ca3(PO4)2 + 3 SiO2 + 11 C = 2 P + 3 CaSiO + 11 CO

hope this helps!.

Compounds have similar properties to the elements of which they are made.For example, FeS is magnetic and smelly, since iron (Fe) and sulfur (S) are attracted to a magnet, and possess an odor of eggs,
respectively

True
False

Answers

Answer:

false

Explanation:

The properties of compounds are often very different from the properties of the elements that make them. For example, water is made from two atoms of hydrogen bonded to one atom of oxygen. ... The elements calcium and chlorine combine to form the compound calcium chloride. Calcium is a soft, silvery metallic solid.

Answer:

the answer is False

Explanation:

False

Hope this helps

A mineral is a naturally occurring solid with a regular, repeating structure. Please select the best answer from the choices provided T F

Answers

Answer: True,a mineral is a naturally occurring solid with a regular, repeating structure.

Explanation:

Minerals are natural occurring inorganic solid substance with fixed chemical composition. These solids are formed by repeating unit of their single crystal structure that is atom present in the minerals are arranged or placed in systematic pattern or fashion. For example : Halite is a mineral composed of chlorine and sodium atoms arranged in a cubic pattern.

So, the given statement is true.

According to American Science Heritage Dictionary, it is true that a mineral is a naturally occurring solid with a regular, repeating structure.

A 0.0489 mol sample of a nutrient substance, with a formula weight of 114 g/mol, is burned in a bomb calorimeter containing 6.56 × 10² g h2o. given that the fuel value is 2.04 × 10⁻¹ in nutritional cal when the temperature of the water is increased by 1.73°c, calculate the fuel value in kj.

Answers

To calculate the fuel value in kJ, we need to convert the nutritional calories to kilojoules.

1 nutritional calorie (cal) = 4.184 kilojoules (kJ)

First, let's calculate the energy released by burning the 0.0489 mol sample of the nutrient substance in calories:

Energy released = moles of nutrient substance * formula weight * fuel value

Energy released = 0.0489 mol * 114 g/mol * 2.04 × 10⁻¹ cal

Next, let's convert the energy released from calories to kilojoules:

Energy released (kJ) = Energy released (cal) * 4.184 kJ/cal

Now, let's substitute the given values into the equations:

Energy released = 0.0489 mol * 114 g/mol * 2.04 × 10⁻¹ cal
Energy released ≈ 0.11185 cal

Energy released (kJ) = 0.11185 cal * 4.184 kJ/cal
Energy released (kJ) ≈ 0.467 kJ

Therefore, the fuel value of the nutrient substance is approximately 0.467 kJ.

Final answer:

To calculate the fuel value in kJ, convert nutritional calories to joules and then to kilojoules.

Explanation:

To calculate the fuel value in kJ, we need to convert the nutritional calories to joules and then to kilojoules. We can use the equation: fuel value (in kJ) = fuel value (in cal) x 4.184 / 1000. Given that the fuel value is 2.04 × 10⁻¹ nutritional cal, we can substitute it into the equation to get the fuel value in kJ.

fuel value (in kJ) = 2.04 × 10⁻¹ x 4.184 / 1000 =8.5288 x 10⁻³ kJ

Learn more about Fuel value here:

brainly.com/question/32379162

#SPJ11

According to Reference Table J, which of these metals will react mostreadily with 1.0 M HCl to produce H2(g)?(1) Ca (3) Mg(2) K (4) Zn

Answers

(K) potassium is the metal that will react most readily with 1.0 M HCl to produce H2(g).

What is potassium?

Potassium is a silvery-white metal with the symbol K and atomic number 19.

The reaction will be

$\rm K + 2HCl = KCl_2 + H_2(g)$

The potassium will react with HCl to produce potassium chloride and hydrogen gas.

It is a single displacement reaction.

In this type of reaction, more reactive metal is displaced with less reactive metal.

Thus, the correct option is 2) K.

Learn more about potassium, here:

brainly.com/question/8507057

Answer: The correct answer is Option 2.

Explanation:

The reaction between a metal and HCl is a type of single displacement reaction.

Single replacement reactions are defined as the reactions in which more reactive metal replaces less reactive metal from its chemical equation. The reactivity is determined from the series called reactivity series. The metal lying above in the series is more reactive than the metal lying below in the series.

General equation for these types of reactions is:

$AB+C\rightarrow CB+A$