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hichkok12 [17]
3 years ago
6

Assuming that magnesium and oxygen will react completely with one another, predict the mass of magnesium

Chemistry
1 answer:
Zigmanuir [339]3 years ago
8 0

Answer:

magnesium oxide that will be produced when

17 g

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¿Cuál es la densidad en g / mL de un material, si 30mL tienen una masa de 6 Kg?
blsea [12.9K]
Hola!

La densidad es una magnitud intensiva, es decir, no depende de la cantidad de material. La densidad se define como la relación entre la masa y el volumen de un cierto material y comúnmente se expresa en g/mL. A partir de esta definición podemos concluir que para hallar la densidad de un material es necesario conocer su masa y su volumen para posteriormente aplicar la ecuación tal como se describe a continuación:

densidad= \frac{masa}{volumen}= \frac{6 kg}{30mL}* \frac{1000g}{1kg}=200g/mL

Entonces, la opción correcta es la C. 200 g/mL

Saludos!
8 0
4 years ago
During the reaction P4 + 5O 2 P4 O10, 1.5 moles of product was made in 30 seconds. What is the rate of reaction?
Brut [27]

Answer:

850g/min

Explanation:

The reaction expression is given as:

      P₄  +  5O₂   →   P₄O₁₀

Given that:

Number of moles of product  = 1.5moles

Time  = 30s = 0.5min

Unknown:

The rate of the reaction  = ?

Solution:

Convert the moles given to mass of the product.

     So;

     Mass of product  = number of moles x molar mass

Molar mass of P₄O₁₀   = 4(31) + 10(16)  = 284g/mol

    Mass of product  = 1.5moles x 284g/mol  = 426g

So;

 Reaction rate  = \frac{mass of product}{time}   = \frac{426}{0.5}   = 850g/min

8 0
3 years ago
What is the first step in the scientific process?
maxonik [38]

\quad \huge \quad \quad \boxed{ \tt \:Answer }

\qquad \texttt  {Observe a natural phenomenon}

____________________________________

\large \tt Explanation  \: :

At first scientists/researchers observe a natural phenomenon. after enough observation, they make predictions why that phenomenon is happening and the reasons that lead to that particular phenomenon. then they generate scientific hypothesis to explain that phenomenon and after getting enough data they develop tests and perform experiments. And check the results they get and at last based on the results they conclude what actually is happening.

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

4 0
2 years ago
How do you find percent composition?
Tatiana [17]

Answer:

vdsfdvdsfdsf

Explanation:

https://newsengin.zendesk.com/hc/vew/community/posts/360056216292-%D9%85%D9%88%D9%82%D8%B9-%D8%A7%D9%84%D9%86%D9%88%D8%B1-%D9%85%D8%B3%D9%84%D8%B3%D9%84-%D8%A7%D9%84%D9%85%D8%A4%D8%B3%D8%B3-%D8%B9%D8%AB%D9%85%D8%A7%D9%86-%D8%A7%D9%84%D8%AD%D9%84%D9%82%D8%A9-8-%D8%A7%D9%84%D8%AB%D8%A7%D9%85%D9%86%D8%A9-%D9%83%D8%A7%D9%85%D9%84%D8%A9-%D9%85%D8%AA%D8%B1%D8%AC%D9%85%D8%A9-%D9%82%D9%8A%D8%A7%D9%85%D8%A9-%D8%B9%D8%AB%D9%85%D8%A7%D9%86-%D8%A7%D9%84%D8%AD%D9%84%D9%82%D8%A9-8-%D9%83%D8%A7%D9%85%D9%84%D8%A9-%D9%85%D8%AA%D8%B1%D8%AC%D9%85%D8%A9

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4 0
3 years ago
What is the volume, in cubic centimeters of a sample of cough syrup that has a mass of 50.0g? The density of cough syrup is 0.95
Goshia [24]

Answer:

I don't have any answer sorryyyy!!

Explanation:

lol say to your mom what is the answer it's good to say :)) lollllll

ll

3 0
3 years ago
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