Stopiono miedź, cynę i cynk. otrzymując 120- gramową sztabkę. Cyny jest w niej trzy razy mniej niż m.... Question from @Lili628

December 2018 2 11 Report

Stopiono miedź, cynę i cynk. otrzymując 120- gramową sztabkę. Cyny jest w niej trzy razy mniej niż miedzi, ale dwa razy więcej niż cynku. Które ze zdań są prawdziwe, a które fałszywe?

a)wagi metali wziętych do stopienia pozostają w stosunku 6:2:1 P/F
b) Miedź stanowi 2/3 całego stopu. P/F
C) Cynk i cyna ważą razem 30g. P/F

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Answer

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Lili628 September 2019 | 0 Replies

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Answer

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Answer

Lili628 September 2019 | 0 Replies

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Answer

Lili628 September 2019 | 0 Replies

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Answer

Lili628 March 2019 | 0 Replies

Opisz po angielsku boks. Jakie umiejętności potrzebujesz i czy chciałbyś uprawiać ten sport . PILNE

Answer

Lili628 March 2019 | 0 Replies

Complete the interview. use the future simple (will), future continuous or future perfect of the verbs in brackets. Interviewer: Today we are talking to Professor Marjorie Brown about life in the future. Let's start with homes. Professor, what will our homes be like? Professor: Well, they might not look very different from homes today but there will certainly be differences. In twenty year;s time homes 1. ...... ( become) smaller. This is because more and more people 2. ... (live) in crowded cities. However, designers 3. .... (undoubtedly/ find) ways of making small homes more comfortable. For example, the homes of the future 4. ... (have) walls that can be moved so that space can be used in different ways. Scientists 5 .... ( also/ invent) glass that can change from transparent to black. Transparent glass lets light and heat in and out. Black glass keeps it in. This 6. .... (help) us to control the temperature of our homes. Interviewer: 7 .... ( there / be) any other changes to the way we live? Professor: Yes, one major change. Experts predict that by 2024 humans 8. ... (live) on the moon. One can only imagine what homes there 9 ... ( look) like! And I think that by then many of us 10 .... (take) at least one holiday in space and maybe even to the moon. Imagine that.

Answer

Lili628 March 2019 | 0 Replies

Co się dzieje z resztkami jedzenia w twoim domu? Napisz wypracowanie po angielsku.

Answer

Lili628 March 2019 | 0 Replies

Complete the sentences with your own ideas. 1. When school finishes today, ... 2, If it is raining at the weekend ... 3. I will always live in this area as long as ... 4. I will stop studying English as soon as ... 5. I probably won;t get a job until ...

Answer

irenas X- waga cynku
2x - waga cyny
6x - waga miedzi

a)
Waga miedzi : waga cyny : waga cynku = 6 : 2 : 1
PRAWDA

b)
Całość waży
6x+2x+x=9x

Waga miedzi stanowi
$\frac{6x}{9x}=\frac{2}{3}$
wagi stopu
PRAWDA

c)
$9x=120g\\x=13\frac{1}{3}g\\2x=26\frac{2}{3}g\\x+2x=3x=13\frac{1}{3}g+26\frac{2}{3}g=40g$
FAŁSZ

2 votes Thanks 2

lukasm4561 A) Fałsz
b) Fałsz
c) Fałsz

0 votes Thanks 0

Opisz po angielsku boks. Jakie umiejętności potrzebujesz i czy chciałbyś uprawiać ten sport . PILNE

Co się dzieje z resztkami jedzenia w twoim domu? Napisz wypracowanie po angielsku.

Complete the sentences with your own ideas. 1. When school finishes today, ... 2, If it is raining at the weekend ... 3. I will always live in this area as long as ... 4. I will stop studying English as soon as ... 5. I probably won;t get a job until ...

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