Giúp em với ạ :(( Hợp chất X có công thức AB4 .Tổng số hạt p,n và e trong phân tử X là 226, trong đó số hạt mang điện nhiều hơn số hạt không mang điện là 70 . Nguyên tử a có số hạt p=n , nguyên tử B có tổng số hath trong nhân nhiều hơn số hạt ở lớp vỏ là 18 . Xác định số hiệu nguyên tử của A và B

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er the questions. VIETNAMESE FARMERS Vietnam is an agricultural country and about 67% of Vietnamese people live in the rural areas. Both men and women work on the fields. Rural women in Vietnam typically do hard outdoor physical labor, which keeps them physically fit and strong. Everyday, they wake up early to get started on their work, normally before the sun comes up. The fields are near their houses, so they often walk to the field. The entire family helps out during planting and harvest. Each family member has certain tasks to do. Men do heavy labor like plowing and digging. Women 5 work around the house, and help with the harvest, planning and weeding. The elderly do light labor. Children, if not going to school, will help the house chores. Girls clean, cook, and work in the vegetable garden; while boys carry water, and help the men in the field. In the countryside, almost every house has a garden to grow vegetables, fruits for family demand or selling for more incomes. Besides growing vegetables, they also keep cattle, pigs and poultry. The day ends up with a family meal together. It’s a great time for all family members to share their stories and get closer to each other. 1. How many percent of Vietnamese people live in the rural areas? .......................................................................................................................... 2. Do the farmers wake up late to get started on their work everyday? .......................................................................................................................... 3. How do they often go to their field? .......................................................................................................................... 4. How do they divide tasks in their family: tasks of men, women and the elderly? .......................................................................................................................... 5. Why does each family often have a garden? .......................................................................................................................... 6. When is the time for all family members to share their stories? .......................................................................................................................