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sergeinik [125]

3 years ago

15

Organisms can be classified either as multi-celled or single-celled. Which of the following groups contains at least some single

-celled organisms? I. bacteria II. fungi III. animals A. I and II only B. I, II, and III C. I only D. II and III only

2 answers:

Juliette [100K]3 years ago

7 0

THE ANSWER IS

I and II only

VLD [36.1K]3 years ago

6 0

Ok, So bacteria and fungi are unicellular or single-celled. While Animals are multi-celled.

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Consider the reaction of 35.0 g of iron as follows:

77julia77 [94]

Explanation:

4Fe + 3O2 --> 2Fe2O3

Mass of iron = 35g

<em>How many moles of iron react?</em>

The relationship between mass and moles is given as;

Moles = mass / Molar mass

Molar mass of iron = 56g/mol

Number of moles = 35 / 56 = 0.625 mol

<em>How many moles of oxygen molecules must react?</em>

From the equation of the reaction;

4 mol of Fe reacts with 3 mol of Oxygen molecule

0.625 mol would react with x mol?

4 = 3

0.625 = x

x = 0.625 * 3 / 4 = 0.46875 mol

<em>How many moles of product form?</em>

From the equation of the reaction;

4 mol of Fe reacts to form 2 mol of Fe2O3

0.625 mol would form x mol of Fe2O3

4 = 2

0.625 = x

x = 0.625 * 2 / 4 = 0.3125 mol

<em>What mass of product forms?</em>

Moles = mass / Molar mass

Mass = Molar mass * Moles = 159.69 g/mol * 0.3125 mol = 49.9g

8 0

4 years ago

A change in the state of matter of something is an example of a physical change solid liquid gas and plasma are states of matter

Irina-Kira [14]

Answer:

A. Changing water from liquid to solid is an example of a physical change

Explanation:

4 0

3 years ago

A bottle of soda has a PH of 3.

BaLLatris [955]

Answer:

The new pH of the solution $= 6$

Explanation:

Given

pH of bottle of Soda is $3$

As we know that

pH $= -$ log [H+]

We will derive the hydrogen ion concentration when pH is $3$

$3 = -$ log [H+]

Taking anti-log on both the sides, we get -

H+ ion is equal to $10^{-3}$

When the hydronuim ion concentration reduces by $\frac{1}{1000}$ of the original concentration, the new hydrogen ion concentration becomes

$\frac{1}{1000000} = 10^{-6}$

The new pH is

$= - log [ 10^{-6}]\\= 6$

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3 years ago

Hurry need the answer asap

Soloha48 [4]

P,T,Y refers to the set of points which are collinear and is therefore denoted as option C.

<h3>What are Collinear points?</h3>

This is commonly used in geometry and refers to the set of points which lie on the same straight line and are always close to each other when compared to other points. It is possible for them to appear on different planes only and the value by the triangle from the three points is usually zero.

In the example give, only P,T and Y are the points which lie on the same line while other options have points which lie on different lines thereby making them incorrect.

This is therefore the reason why option C was chosen as the most appropriate choice.

Read more about Collinear points here brainly.com/question/18559402

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7 0

2 years ago

I need to know “ The carbon atom that has the chlorine atone has an optical activity “

katrin2010 [14]

Answer: R

Explanation: is polarized to the right

3 0

3 years ago