Tet is a national festival in Vietnam,  many Vietnamese people love it. Tet is celebrated in the January of lunar calendar to welcome the new year. Before Tet, people buy food, fruits, drink, flowers, and the most important is the peach blossom or kumquat tree. Children are bought new clothes by their parents.  On New Year's Eve, all of the family members gather to give each other the best wishes and have a meal. During Tet, people can go to the parks, stadiums to see fireworks, it is very beautiful. Children can receive lucky-money from parents and relatives. I staying at home to watch the New Year's comedies, it makes me laugh a lot.  On the next day, people go to the temple to thank the ancestors, Buddha who helped everyone in the old year. In short, I really love Tet, and I hope that Tet will always be an important festival for Vietnamese people. 

a, \(Fe+2HCl\rightarrow FeCl_2+H_2\)

b, Ta có: \(n_{H_2}=\dfrac{4,958}{24,79}=0,2\left(mol\right)\)

Theo PT: \(n_{Fe}=m_{H_2}=0,2\left(mol\right)\)

⇒ m_Fe = 0,2.56 = 11,2 (g)

\(n_{Mg}=\dfrac{24}{24}=1\left(mol\right)\)

PT: \(Mg+H_2SO_4\rightarrow MgSO_4+H_2\)

____1_______1_______________1 (mol)

a, \(V_{H_2SO_4}=\dfrac{1}{0,2}=5\left(l\right)\)

b, \(V_{H_2}=1.24,79=24,79\left(l\right)\)

em đang cần gấp giúp em với

Bạn ơi, mình chưa rõ câu hỏi của bạn là gì nhé. Có thể hình ảnh bạn tải lên bị lỗi.

A nha phải là many

A.much => many

a, \(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

b, \(Fe\left(OH\right)_3+3HCl\rightarrow FeCl_3+3H_2O\)

c, \(3Ca\left(OH\right)_2+2FeCl_3\rightarrow2Fe\left(OH\right)_3+3CaCl_2\)

1. \(C\%_{NaCl}=\dfrac{10}{10+190}.100\%=5\%\)

2. \(n_{NaOH}=\dfrac{4}{40}=0,1\left(mol\right)\)

\(\Rightarrow C_{M_{NaOH}}=\dfrac{0,1}{0,4}=0,25\left(M\right)\)

3. \(n_{H_2}=\dfrac{7,437}{24,79}=0,3\left(mol\right)\)

PT: \(Mg+2HCl\rightarrow MgCl_2+H_2\)

____0,3______0,6______0,3___0,3 (mol)

a, \(m_{Mg}=0,3.24=7,2\left(g\right)\)

b, \(C_{M_{HCl}}=\dfrac{0,6}{0,2}=3\left(M\right)\)

c, \(m_{MgCl_2}=0,3.95=28,5\left(g\right)\)

Tết is the most important festival in Vietnam, celebrating the Lunar New Year. It marks the arrival of spring and is a time for family reunions, honoring ancestors, and wishing for a prosperous year ahead. During Tết, people decorate their homes with flowers like peach blossoms and kumquat trees. They also prepare special foods, such as bánh chưng and bánh tét. It is a time for joy, with people visiting friends and relatives, exchanging gifts, and enjoying festive activities. Tết brings a sense of renewal and hope for the future.

mn giúp e với em quên cách làm rồi

BCNN(28; 30; 2)

28 = 2\(^2\).7; 30 = 2.3.5; 2 = 2

BCNN(28; 30; 2) = 2\(^2.3.5.7\) = 420

BCNN(25; 30; 3)

25 = 5\(^2\) ; 30 = 2.3.5; 3 = 3

BCNN(25; 30; 3) = 2.5\(^2\).3 = 150

BCNN(30; 35; 6; 3)

30 = 2.3.5; 35 = 5.7; 6 = 2.3; 3 = 3

BCNN(30; 35; 6; 3) = 2.3.5.7 = 210