K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

24 tháng 7 2023

Để giải bài toán này, ta cần xác định công thức hóa học của chất rắn Y và muối trung hòa trong dung dịch Z.

Gọi số mol của MgCO3 trong hỗn hợp X là n1, số mol của RCO3 trong hỗn hợp X là n2.

Theo đề bài, ta có:
Khối lượng của MgCO3 trong hỗn hợp X là: m1 = n1 * MM(MgCO3)
Khối lượng của RCO3 trong hỗn hợp X là: m2 = n2 * MM(RCO3)

Vì các phản ứng xảy ra hoàn toàn nên ta có:
n1 mol MgCO3 + n2 mol RCO3 + H2SO4 → Y + Z

Theo đề bài, khối lượng rắn Y thu được là 23,3 gam, vậy ta có:
m1 + m2 = 23,3

Theo đề bài, dung dịch Z chứa m gam bạc trung hòa, vậy ta có:
m = m1 + m2

Ta có công thức hóa học của trung hòa trong dung dịch Z là:
Z = MgSO4 + R2SO4

Do đó ta có hệ thống phương tiện:
m1 + m2 = 23,3
m = m1 + m2

This method system, ta has:
m1 = 23,3 - m2
m = 23,3 - m2 + m2 = 23,3

Vậy m = 23,3 gam.

23 tháng 7 2023

when

6 tháng 8 2019

Đọc đoạn văn trả lời câu hỏi

Nam lives hot weather. He usually goes swimming in the summer. In the fall. he likes going fishing with his friends. He doesn't often go out in the winter. When it's cold he stays at home and reads books. In the spring, the weather is warm, so he goes jogging or camping.

1. What is the weather like in the summer?

It's hot in the summer.

2. What does Nam do when it's hot?

He usually goes swimming.

3. What does he do in the fall?

He likes going fishing with his friends.

4. Does he usually go out when it's cold?

5. What does he do in the winter?

He doesn't often go out ,he stays at home and reads books.

6. What does he do in the spring

He goes jogging or camping.

6 tháng 8 2019

nhanh mn ơi khocroi

17 tháng 3 2017

Trả lời các câu hỏi sau, dùng từ gợi ý trong ngoặc

What's the weather like in winter? (cold)

It is cold in winter.

What do you do when it's cold? ( soccer)

I play soccer when it's cold.

What do you do in the summer?( sailing)

I go sailing in the summer.

What does he do when it's hot? ( swimming)

He goes swimming when it's hot.

Where does she spend her summer vacation? ( country)

She spends her summer vacation in the country.

Dùng những từ đã cho, viết câu hoàn chinh theo mẫu

Nam/ hot// go swimming

What does Nam do when it's hot? - He goes swimming

your father/ cool// ride his bike

What does your father do when it's cool? - He rides his bike

he/hot//go sailing

What does he do when it's hot? - He goes sailing

your brother/ cold// play basketball

What does your brother do when it's cold? - He plays basketball

she/ cold// watch television

What does she do when it's cold? - She watches television

Lan/ warm// go for a walk

What does Lan do when it's warm? - She goes for a walk

Ba/ hot// go swimming

What does Ba do when it's hot? - He goes swimming

19 tháng 3 2017

BT1: 1/It's cold in winter.

2/When it's cold, I'm play soccer.

3/I'm go sailing in the summer.

4/When it's hot, he goes swimming.

5/She spend her summer vacation in the country.

BT2:1/What does your father do when it's cool?

My father rides his bike.

2/What does he do when it's hot?

He goes sailing.

3/What does your brother when it's cold?

My brother plays basketball.

4/What does she do when it's cold?

She watches television.

5/What does Lan do when it's warm?

She goes for a walk.

6/What does Ba do when it's hot?

He goes swimming.

Nhớ tick cho mk nha!

7 tháng 5 2021

1.The weather usually hot in summer.

2. I always go outside and enjoy outdoor activites

3. He collections autumn leaves  

4. No he, doesn't

ok nhé bạnhihi

 

11 tháng 12 2020

dịch sang tiếng việt hay trả lời đó bn

28 tháng 6 2017

Giúp mk với các bạn

1........Which.........sports do you play?- I play volleyball

2........How often........does Ly go jogging? -She goes jogging once a week

3 ........How long.........Is Ba going to stay? - He is going to stay for three days

4 .....What........the weather like in the spring? - It's warm

5 ..........What time........doyou go to bed? - At half past ten

6 What does he do.................. - It's cold ???

7 .......What color........are her eyes?-It's brown

8 .......Where.......is Minh from?-He's from Viet Nam

9 ...........How much.............beef does he want?-He's wants two hundred grams

10 ............How many.............eggs do you want?-I want a dozen eggs

11..............Where do..................Minh and his friends to walking?-They gooes walking in the mountain on the weekend

28 tháng 6 2017

Giúp mk với các bạn

1.........WHICH........sports do you play?- I play volleyball

2.........HOW OFTEN.......does Ly go jogging? -She goes jogging once a week

3 .........HOW LONG........Is Ba going to stay? - He is going to stay for three days

4 ....WHAT IS.........the weather like in the spring? - It's warm

5 .........WHEN.........doyou go to bed? - At half past ten

6 What does he do..........WHEN....... - It's cold

7 ............WHAT COLOR...are her eyes?-It's brown

8 .......WHERE.......is Minh from?-He's from Viet Nam

9 ..........HOW MUCH..............beef does he want?-He's wants two hundred grams

10 ...................HOW MANY......eggs do you want?-I want a dozen eggs

11...................WHERE IS............Minh and his friends to walking?-They gooes walking in the mountain on the weekend

17 tháng 3 2017

Sắp xếp các từ sau thành câu hoàn chỉnh

1,goes/ sometimes/ fishing/ in/ summer/ he/ the

>> He sometimes goes fishing in the summer.

2,play/ how/ do/ you/ tennis/ often?

>> How often do you play tennis

3,you/ like/ sports/ do/ what?

>> What sports do you like

4,swimming/ it/ hot/ often/ goes/ he/ when/ is

>> He often goes swimming when it is hot.

5,go/ evening/ the/ I/ often/ jogging/in/ don't

>> I don t often go go jogging in the evening.

6,is/ soccer/ when/ cold/ it/ I/ play/ usually

>> I usually play soccer when it is cold.

7,in/ you/ what/ spring/ do/do/ the?

>> What do you do in the spring

8,winter/ in/ Nam/ the/ goes/ often/ jogging.

>> Nam often goes jogging in the winter.

17 tháng 3 2017

Sắp xếp các từ sau thành câu hoàn chỉnh

goes/ sometimes/ fishing/ in/ summer/ he/ the

=> He sometimes goes fishing in the summer.

play/ how/ do/ you/ tennis/ often?

=> How often do you play tennis?

you/ like/ sports/ do/ what?

=> What sports do you like?

swimming/ it/ hot/ often/ goes/ he/ when/ is

=> He often does swimming when it is hot.

go/ evening/ the/ I/ often/ jogging/in/ don't

=> I don't often go jogging in the evening

is/ soccer/ when/ cold/ it/ I/ play/ usually

=> I usually play soccer when it is cold

in/ you/ what/ spring/ do/do/ the?

=> What do you do in the spring?

winter/ in/ Nam/ the/ goes/ often/ jogging.

=> Nam ofen goes jogging in winter

5 tháng 2 2017

1. They aren't free on Sunday. ( always)

___They aren't always free on Sunday.__________________________________________

2. What do you do when it is cold? ( often )

__________What do you often do when it is cold?___________________________________

3. Is it warm in the spring? ( usually )

_______Is it warm usually in the spring?______________________________________

4. They are tired after work. ( always )

__________________They are always tired after work.___________________________

5. What does he do on Sunday? ( often )

___________What does he often do on Sunday?__________________________________

5 tháng 2 2017

Put the adverbs in the correct position of each sentence.

1. They aren't free on Sunday. ( always)

- They aren't always free on Sunday

2. What do you do when it is cold? ( often )

- What do you often do when it is cold?

3. Is it warm in the spring? ( usually )

- Is it usually warm in the spring?

4. They are tired after work. ( always )

- They are always tired after work

5. What does he do on Sunday? ( often )

- What does he often do on Sunday?

26 tháng 2 2020

XI. Read the following passage then answer the questions:

In the United states, the weather changes a lot from season to season. In the summer, it is very hot. In the fall, it is cool but not cold. In the winter , it is very cold and it snows. In the spring, the weather is warm, it rains and flowers begin to grow. The spring is green and very beautiful.

In the summer, people can swim and have to wear light clothing. In the winter, people can ski but have to wear heavy clothes.

(Đoạn văn ở câu hỏi trc của Zin Zin)

26 tháng 2 2020

Questions:
1. Does the weather change in the United states?

Yes, it does
2. Is it hot or cold in the summer?

It is hot in the summer
3. Is it cool or warm in the fall?

It is cool in the fall
4. What’s the weather like in the winter?

It's very cold
5. What clothes do people wear in the winter?

People wear heavy clothes
6. What is the difference between the weather in the spring and the weather in the fall?

The weather in spring is warm, the weather in the fall is cool
XII. Answer some questions about you:
1. What weather do you like?

I like hot weather
2. What do you do when it’s hot?

I go swimming

3. Which sports do you play?

I play basketball and football
4. What do you do in your freetime?

I listen to music and read books