That's a difficult question to answer since there is no standard size or word count for a chapter. Every author has their own preferences and writing style. The general consensus is that the average chapter size should range between 500 and 2,500 words--or anywhere from 2 to 10 manuscript pages. Some authors might write much longer chapters and some might even write shorter ones. When it comes to page count, it depends on the publisher's specifications as to how many words and/or characters should fit on one page. So, ultimately, the only way to get an accurate answer for how many pages a chapter contains is to speak with a publisher for the specific details about their specs.