La emulsión produce grano.

In Spanish, a noun used as the subject normally needs an article or another determiner. So la emulsión is the natural way to say the emulsion.

Also, Spanish often uses the definite article in places where English might sound more technical or label-like without one. So even if English sometimes drops the article, Spanish usually keeps it here.

Because emulsión is a feminine noun. In Spanish, nouns ending in -ión are very often feminine, so they take la in the singular:

• la emulsión
• la canción
• la estación

The plural would be las emulsiones.

Produce is the third-person singular present indicative form of producir.

It matches the subject la emulsión, which is singular. So grammatically it means the emulsion produces or it produces.

A few related forms are:

• yo produzco = I produce
• tú produces = you produce
• él/ella produce = he/she/it produces

Spanish often leaves subject pronouns out because the verb ending already shows who or what the subject is. In produce, the ending tells you it is third-person singular.

So La emulsión produce grano is perfectly complete on its own. Adding ella would usually be unnecessary unless you wanted extra emphasis or contrast.

Here, grano is being presented as a general result or effect, not as a specific previously mentioned thing. In Spanish, that often means no article is used.

So:

• produce grano = produces grain / causes graininess
• produce el grano would usually mean produces the grain, referring to some specific grain already known from context

In this kind of technical use, grano is often treated like a general effect or quality, similar to English grain or graininess. The singular refers to the phenomenon as a whole.

Using granos would sound more like separate individual grains or particles, which is usually not the point in a sentence like this.

Because Spanish stress rules would otherwise put the stress in the wrong place.

A word ending in n, s, or a vowel is normally stressed on the second-to-last syllable. Without the accent, emulsion would be stressed incorrectly. The accent mark shows that the stress falls on the last syllable:

• e-mul-sión

So the written accent is required.

No, it is not pronounced like the English word.

In most of Spain, produce is pronounced roughly proh-DOO-theh, with the c before e sounding like the th in think. The stress is on du.

So the sentence sounds roughly like:

la eh-mool-SYON proh-DOO-theh GRA-no

A few pronunciation notes for Spain:

• emulsión: stress on the last syllable
• produce: c before e = th sound in most of Spain
• grano: the g is a hard g, and the r is a tapped Spanish r

Yes. La emulsión produce grano follows the standard Spanish pattern:

subject + verb + object

That is the most neutral and natural order for a basic statement.

Spanish can change word order for emphasis, but for learners this version is the safest and most natural one to use.