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3 years ago

Which picture or pictures show an element?

Chemistry

2 answers:

o-na [289]3 years ago

7 0

The ANSWER IS A AND C give my homie a branliest

Westkost [7]3 years ago

5 0

Its both A and C because both A and C have only one type each so it can only be those two :)

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While ALL the information in a Schumer Box is important, which items do you think matter most on a day-to-day basis?

Oksana_A [137]

Answer:

The most important information is: financial charges, annual fees, minimum payments and how the balance is calculated.

Explanation:

A Schumer Box is a table where the credit card companies disclose all the terms and conditions necessary to make a contract with them, as well as disclose all fees, charges, balances and elements that make up the credit card.

All information shown on a Schumer Box is important, but the most important is that which deals directly with the customer's money or balance. This information is: financial charges, annual fees, minimum payments and how the balance is calculated.

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3 years ago

Write an equation for the neutralization of lemon juice with baking soda. Your equation should show a proton transfer to form ca

Jobisdone [24]

The equation of the neutralization reaction is:

HOC(CO₂H)(CH₂CO₂H)₂ + Na₂CO₃ ----> HOC(CO₂Na)(CH₂CO₂Na)₂ + H₂O

<h3>What is the acid in lemon juice?</h3>

The main acid in lemon juice is citric acid.

Citric acid is a tricarboxylic acid and will react with baking soda to form a salt and water.

The equation of the neutralization reaction is shown below:

HOC(CO₂H)(CH₂CO₂H)₂ + Na₂CO₃ ----> HOC(CO₂Na)(CH₂CO₂Na)₂ + H₂O

In conclusion, the neutralization of citric acid in lemon juice produces a salt and water.

Learn more about neutralization reaction at: brainly.com/question/15042730
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2 years ago

Negative feedback loops:

velikii [3]

Answer:

the 3rd option. negative feedback loops are initiated during childbirth.

3 0

3 years ago

A pharmaceutical company wants to test the efficiency of its new drug production techniques so they run 3 shifts of production f

jeyben [28]

Answer:

Explanation:

total production of the three shifts/ total of prediction of each yield x 100%

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2 years ago

Read 2 more answers

In the electrolysis of water, how long will it take to produce 165.0 L of H2 at 1.0 atm and 273 K using an electrolytic cell thr

vladimir2022 [97]

In the electrolysis of water, 3490 hour will it take to produce 165.0 L of H2 at 1.0 atm and 273 K using an electrolytic cell through which the current is 113.0 mA.

<h3>What is Ideal Gas Law ?</h3>

The ideal gas law states that the pressure of gas is directly proportional to the volume and temperature of the gas.

It is expressed as

PV = nRT

where,

P = Pressure

V = Volume in liters

n = number of moles of gas

R = Ideal gas constant

T = Temperature in kelvin

Here,

P = 1.0 atm

V = 165.0 L

R = 0.0821 atm. L/mol.K (Ideal gas constant)

T = 273 K

n = ?

Now put the value in above expression, we get

PV = nRT

1.0 atm × 165.0 L = n × 0.0821 atm. L/mol.K × 273 K

165.0 atm. L = n × 22.4 atm. L/mol

$n = \frac{165.0\ \text{atm. L}}{22.4\ \text{atm. L/mol}}$

n = 7.36 mol

The reaction is

2H⁺ + 2e⁻ → H₂

1 mol of electrons is produced from 96500 C

So,

$96500 \frac{C}{\text{mol} \times e} \times 2e \times 7.36\ \text{mol}$

<em>= </em>1,420,480 C

<u>Convert milliampere to C/s</u>

1mA = 0.001 C/s

113.0 mA = 113.0 × 0.001

= 0.113 c/s

<h3>What is relationship between current, charge and time ?</h3>

The relation between current, charge and time is expressed as:

$I = \frac{Q}{t}$

where,

I = Current

Q = Charge in Coulomb

t = time

Now put the value in above formula we get

$I = \frac{Q}{t}$

$= \frac{1,420,480\ C}{0.113\ C/s}$

= 12,570,619.469 s

= 3490 hour

Thus from the above conclusion we can say that In the electrolysis of water, 3490 hour will it take to produce 165.0 L of H2 at 1.0 atm and 273 K using an electrolytic cell through which the current is 113.0 mA.

Learn more about the Ideal Gas Law here: brainly.com/question/25290815

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5 0

2 years ago