Опись вещей лежит в грузовом фургоне.

Because опись normally takes the genitive case: опись чего? = an inventory of what?

So:

• вещь = item, thing
• вещей = genitive plural of вещь

That makes опись вещей mean inventory of items/things.

This is a very common pattern in Russian:

• список гостей = list of guests
• описание города = description of the city
• опись документов = inventory of documents

So вещей is there because the noun опись governs it.

It is the prepositional case.

When в means in and shows a location, Russian normally uses the prepositional:

• в фургоне = in the van
• в грузовом фургоне = in the cargo van

Here are the forms:

• фургон → в фургоне
• грузовой → в грузовом

Compare that with motion into something, where Russian usually uses the accusative:

• положить в фургон = to put into the van

So in this sentence, nothing is moving; it is already there, so в грузовом фургоне is prepositional.

Russian often uses a position verb where English would simply say is.

So instead of only saying that something exists somewhere, Russian often says how it is positioned:

• лежит = is lying
• стоит = is standing
• висит = is hanging

A document, book, paper, or list can naturally лежать somewhere in Russian. So Опись вещей лежит в грузовом фургоне sounds very normal.

English often prefers a simpler structure like The inventory is in the cargo van, but Russian commonly uses лежит for this kind of object.

Because the subject is опись, which is singular.

In the present tense, Russian verbs agree with the subject in person and number:

• лежит = singular
• лежат = plural

So:

• Опись лежит = The inventory is lying
• Описи лежат = The inventories are lying

Even though вещей is plural, it is not the subject. The subject is опись.

Yes, опись is a feminine noun.

Many nouns ending in ь are feminine, but not all of them, so you often have to learn the gender together with the word.

You can see the feminine gender in agreement:

• эта опись = this inventory
• подробная опись = a detailed inventory
• опись лежала = the inventory was lying

So although the ending ь can be tricky, опись is feminine.

Both can refer to a kind of list, but they are not exactly the same.

• список = a general list
• опись = an inventory, a more formal or systematic listing of items

So опись вещей sounds more like:

• an inventory of belongings
• an itemized list of things
• a formal record of objects

If you used список вещей, that would sound more general, like a list of things. Опись suggests something more official or detailed.

Yes, you can.

• Опись вещей находится в грузовом фургоне = The inventory is located in the cargo van

This sounds more neutral or formal.

The difference is mainly nuance:

• лежит focuses on the physical position of the object
• находится simply states location

For a paper or document, лежит is very natural in everyday Russian. Находится is also correct, but it is less vivid and a bit more formal.

Yes. Russian word order is more flexible than English word order.

The sentence as given:

• Опись вещей лежит в грузовом фургоне

is a normal, neutral way to say it.

But you could also say:

• В грузовом фургоне лежит опись вещей

This version puts more attention on the location, as if answering Where is the inventory?

So the grammar stays correct, but the emphasis changes.

Because Russian has no articles.

Russian does not have direct equivalents of English a/an and the. Whether something is definite or indefinite is usually understood from context.

So Опись вещей лежит в грузовом фургоне could be understood in English as:

• The inventory of the items is in the cargo van
• An inventory of the items is in a cargo van

Which English version is best depends on the situation, not on any article in the Russian sentence.

It means a van used for carrying cargo rather than passengers.

• груз = cargo, load
• грузовой = cargo, freight, for transporting goods
• фургон = van

So грузовой фургон is something like:

• cargo van
• delivery van
• panel van

The best English translation can vary by context, but the core idea is a van meant for transporting goods.

The stress is:

опИсь вещЕй лежИт в грузовОм фургОне

A few helpful notes:

• опИсь — stress on the second syllable
• вещЕй — stress on the second syllable
• лежИт — stress on the second syllable
• грузовОм — stress on the last syllable
• фургОне — stress on the second syllable

For an English speaker, щ in вещей is a soft long sh-type sound, and final unstressed vowels are usually reduced in natural speech.