All categories

3 years ago

What is the effect of adding a pre-made mix to alcohol?

Chemistry

1 answer:

Maurinko [17]3 years ago

5 0

Is not adequate to prevent dehydration effects in the cell

You might be interested in

Now molecules: ____ molecules of H2 + ____ molecules of O2 → ____molecules of H2O

Valentin [98]

Answer:

4 H2 + 1 O2 = 2 H2O

6 0

3 years ago

Pure hydrogen (H₂) is a hazardous substance. Thus, safer and more cost effective techniques have been developed to store it as a

Paha777 [63]

Answer: hello your question has some missing details attached below is the missing details

answer : 25.5% ( B )

Explanation:

<u>Determine percentage yield </u>

molar mass = 35 g/mol

mass of Li₃N(s) = 70 g

product LiH(s) = 8.0 g ( actual yield )

theoretical yield ( LiH ) = 4 * 7.95 = 31.8 g

percentage yield = actual yield * 100 / theoretical yield

= 8 * 100/31.8

= 25.5%

4 0

3 years ago

What are the benefits of scientists using the metric system worldwide?select all that apply

denis-greek [22]

There are several scales to determine the weight of material. The chose of the weight scale depends upon the size of the material. Like if we have to measure the molecular or atomic weight of a molecule or atom we use gm. Like that for the bigger molecules like proteins the weight of the molecule is expressed by different scale due to its big size. Like that for big material like iron rods etc we generally use kilograms or ton. There are two types of measuring units one is C.G.S. and another is S.I. The S.I. units are more acceptable worldwide than that the C.G.S. units as the digit comes in SI units are easily handable than that of CGS.

Thus metric is used to determine a large weight of compounds which is a SI unit and handable.

4 0

3 years ago

Does a chemical bond join atoms together in a water molecule?

MrRissso [65]

Yes.

A covalent bond holds it together, which is chemical.

3 0

3 years ago

A sample of metal has a mass of 24.64 g, and a volume of 5.91 mL. What is the density of this metal?

dlinn [17]

Answer:

$\boxed {\boxed {\sf 4.17 \ g/mL}}$

Explanation:

We are asked to find the density of a metal. Density is the mass per unit volume. It is calculated by dividing the mass by the volume.

$\rho= \frac{m}{v}$

The mass of the metal sample is 24.64 grams and the volume is 5.91 milliliters. We can substitute these values into the formula.

m= 24.64 g
v= 5.91 mL

$\rho=\frac{24.64 \ g }{5.81 \ mL}$

Divide.

$\rho= 4.169204738 \ g/mL$

The mass measurement has 4 significant figures the volume measurement has 3 significant figures. Our answer for density must match the least number of significant figures, which is 3.

For the number we calculated, that is the hundredth place. The 9 in the thousandth place tells us to round the 6 up to a 7.

$\rho \approx 4.17 \ g/mL$

The density of this metal is approximately <u>4.17 grams per milliliter.</u>

3 0

3 years ago