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3 years ago

What is a substrate

Chemistry

1 answer:

Oduvanchick [21]3 years ago

4 0

Answer:

a substrate is surface or material on or from an organism lives, grows, or obtains its nourishment.

Explanation:

Hey I hope this helps.....

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What are the coefficients needed to balance this chemical reaction to show that matter is conserved?

Degger [83]

The answer is B I had took that last year

5 0

3 years ago

How many moles of oxygen (O2) are present in 33. 6 L of the gas at 1 atm and 0°C? 1. 5 2 22. 4 32.

oee [108]

The number of moles of oxygen in the gas is 1.5 L.

The correct option is (A).

<h3>What are moles? </h3>

The mole is the International System of Units' foundation unit of material quantity.

Given,

The volume of gas is 33.6 L

Pressure is 1 atm.

Temperature is 0°C

Molar gas volume is 22.4 L

There is no temperature and pressure is 1 atm.

By formula of moles, volume is divided by molar mass

$\bold{\dfrac{33.6}{22.4 } =1.5\; mole}$

Thus, option A is correct. 1.5 L.

Learn more about gas, here:

brainly.com/question/13123721

3 0

2 years ago

Two forces are described below: Force 1: The force with which Earth pulls a person to its center Force 2: The pulling force appl

spin [16.1K]

Answer:

the correct answer is D

4 0

3 years ago

Read 2 more answers

How many moles of Al are needed to react exactly with 10.00 moles of Fe2O3 according to the following

4vir4ik [10]

Answer:

Answer is B) 20.0 moles

Explanation:

From the equation,

1 mole of Fe2O3 = 2 moles of Al

therefore 10.0 moles of Fe2O3 = 10×2

= 20.0 moles.

3 0

3 years ago

Diamonds are measured in carats, and 1 carat=0.200 g. The density of diamond is 3.51 g/cm^3. What is the volume of a 5.0 - carat

Blizzard [7]

Answer:- Volume of the 5.0 carat diamond is $0.28cm^3$ .

Solution:- It is a unit conversion problem. Need to convert carat to grams and then using grams and density the volume could easily be calculated.

We have 5.0 carat diamond and asked to calculate it's volume. Density of diamond is given as $3.51\frac{g}{cm^3}$ and 1 carat = 0.200 g. Let's do this step by step:

First step is the conversion of carat to grams:

$5.0carat(\frac{0.200g}{1carat})$ = 1.0 g

In second step, grams are converted to volume using the given density as:

$volume=\frac{mass}{density}$

$volume=1.0g(\frac{1cm^3}{3.51g})$

$volume=0.28cm^3$

So, the volume of the 5.0 carat diamond is $0.28cm^3$ .

6 0

3 years ago