Peace Lily Spathe Flower

This does appear to be one of the Aroids known as Spathe flower. There are ~35 wild species, plus forms of garden origin. All make good houseplants. Tolerates low light but does best in medium light, well-drained soil, with moderate amounts of water and fertilizer. We suspect your plant has dried out. Peace lily would rather be a bit too damp than a little bit dry. Remove all the dead leaves. Then, assuming the container has a hole in the bottom, place it in a larger container and fill the larger container so that water goes up the sides but not over the top of the plant’s container. Leave it like this until the top of the potting soil is moist. Then remove the plant and allow the container to drain. By watering from the bottom up in this way you will rehydrate the plant and the potting soil and get it back on the road to health. After this one-time soaking, water when the potting soil is dry to the depth of the first knuckle on your finger.