All categories

1 year ago

If an ionic compound were composed of a4+ and b−, which unit cell structure would give a neutral compound?

1 answer:

4 0

biological reactions that happen within cells while reducing the complex interactions found in a whole cell. Eukaryotic and prokaryotic cells have been used for creation of these simplified environments[1]. Subcellular fractions can be isolated by ultracentrifugation to provide molecular machinery that can be used in reactions in the absence of many of the other cellular components. Cell-free biosystems can be prepared by mixing a number of purified enzymes and coenzymes. Cell-free biosystems are proposed as a new low-cost biomanufacturing platform compared to microbial fermentation used for thousands of years. Cell-free biosystems have several advantages suitable in industrial applications

You might be interested in

In some chemical reactions, electrons are transferred from one substance to another, but there is no net gain or loss of electro

Natali [406]

Answer and Explanation:

The equation that depicts oxidation of neutral atom A is shown below:

$\rightarrow A^+ + e^-$

This is because one species is losing electrons due to oxidation. The species possesses positively charged after losing electrons, the magnitude of which is proportional to the number of electrons lost.

The net charge will be equivalent on both sides of the equation, too.

Therefore all other options are not correct

The equation that depicts the decline of neutral atom X is

$X + e^- \rightarrow X^-$

It is how a cell gains electrons by reduction. The species obtains a negative charge upon possessing electrons, whose magnitude is equivalent to the amount of electrons gained.

The net charge will be equivalent on both sides of the equation, too.

Therefore all other options are not correct

4 0

2 years ago

A 157-mL sample of gas is collected over water at 22°C and 753 torr. What is the volume of the dry gas at STP? (The vapor pressu

galina1969 [7]

Answer:

Volume at STP = 0.1401 L

Explanation:

We are given:

Vapor pressure of water = 20 torr

Total vapor pressure = 753 torr

Vapor pressure of gas = Total vapor pressure - Vapor pressure of water = 753 torr - 20 torr = 733 torr

Using

$PV=nRT$

where,

P = pressure of the gas = 733 torr

V = Volume of the gas = 157 mL= 0.157 L

T = Temperature of the gas = $22^oC=[22+273]K=295K$

R = Gas constant = $62.3637\text{ L.torr}mol^{-1}K^{-1}$

n = number of moles of gas = ?

Putting values in above equation, we get:

$733 torr\times 0.157L=n\times 62.3637\text{L.torr}mol^{-1}K^{-1}\times 295K\\\\n=\frac{733\times 0.157}{62.3637\times 295}=0.006255mol$

At STP, one mole of the gas occupies a volume of 22.4 L

So, 0.006255 mole of the gas occupies a volume of 22.4*0.006255 L

Volume at STP = 0.1401 L

3 0

1 year ago

When a 375 mL sample of nitrogen is kept at constant temperature, it has a pressure of 1.2 atmospheres. What pressure does it ex

kolezko [41]

Answer:

It exerts a pressure of 3.6 atm

Explanation:

This is a gas law problem. We are looking at volume and pressure with temperature being kept constant, thus, the gas law to use is Boyle’s law. It states that at a given constant temperature, the volume of a given mass of gas is inversely proportional to the pressure of the gas.

Mathematically; P1V1 = P2V2

Let’s identify the parameters according to the question.

P1 = 1.2 atm

V1 = 375mL

P2 = ?

v2 = 125mL

We arrange the equation to make room for P2 and this can be written as:

P2 = P1V1/V2

P2 = (1.2 * 375)/125

P2 = 3.6 atm

3 0

1 year ago

Read 2 more answers

If you are given the assignment to cut raw poultry for your entire shift, when should you sanitize the counter top, cutting boar

MrMuchimi

Sanitizing is essential in addition to cleaning poultry equipment. This is done only at the beginning and ending of your shift while cleaning should be done from time to time. Prior to sanitization, all surfaces must be clean and thoroughly rinsed to remove any detergent residue. Keep in mind that unclean surface cannot be sanitized. Sanitize refers to reduction of unwanted microorganisms to levels considered safe from a public health.

8 0

2 years ago

Read 2 more answers

A sample of water is taken and kept in a beaker in a freezer at a constant temperature of 0°C. If the system is at dynamic equil

rjkz [21]

Answer:The amount of ice is equal to the amount of water.

Explanation:

7 0

2 years ago

Read 2 more answers