Ask question

Ask question

All categories

2 years ago

10

I need help with Hess law

1 answer:

ICE Princess25 [194]2 years ago

6 0

Answer:

alright

Explanation:

Hess law is the enthalpy change for a reaction that is carried out in a series of steps is equal to the sum of the enthalpy changes for the individual steps. Consistent with the law of conservation of energy. Starting and final conditions must be the same.

You might be interested in

In Mendelian genetics, when a tall plant is crossed with a short plant, the offspring will be:

Annette [7]

Some offspring may be tall, some may be short, and some may be medium medium sized.

3 0

2 years ago

Read 2 more answers

The building block of all matter is a) water b) oxygen c) an atom d) an element

jeka94

My best try would be d an element

4 0

3 years ago

What is the mass of substance that exactly fills a 247.2 mL container? The density of the substance is 0.81 g/mL. Give the answe

matrenka [14]

Answer:

<h2>mass = 200.23 g</h2>

Explanation:

The density of a substance can be found by using the formula

$Density = \frac{mass}{volume}$

Since we are finding the mass

<h3>mass = Density × volume</h3>

From the question

Density = 0.81 g/mL

volume = 247.2 mL

Substitute the values into the above formula and solve for the mass

mass = 0.81 × 247.2

= 200.232

We have the final answer as

<h3>mass = 200.23 g to 2 decimal places</h3>

Hope this helps you

3 0

2 years ago

A mole is the amount of a substance that contains as many particles as the number of atoms in 12 grams of what isotope?

ioda

The <span>12C</span><span> isotope. Hope this helps.</span>

3 0

3 years ago

Is phosphorous dissolving in carbon disulfide a physical or chemical property? if physical, is it intensive or extensive?

Nana76 [90]

Answer: Phosphorus is insoluble in water, but soluble in carbon disulfide. Phosphorus burns spontaneously in air to its pentoxide.

Explanation: Hope this helped! :)

3 0

3 years ago

Read 2 more answers