All categories

3 years ago

Which material is the least likely to be recognized as a mixture by looking at it under a microscope

Chemistry

2 answers:

PSYCHO15rus [73]3 years ago

5 0

A homogenous mixture is uniform and thus hard to recognize as a mixture. An example is water!

alexgriva [62]3 years ago

5 0

Answer:

C. a homogeneous mixture

Explanation:

I did this on the ed test

You might be interested in

What are 3 types of mutations

mote1985 [20]

1- Base substitutions.

2- Deletions.

3- Insertions.

6 0

2 years ago

Read 2 more answers

The base that will NOT combine with 2-deoxyribose to form a nucleic acid is _____.

beks73 [17]

Answer:

Uracil

Explanation:

The base that will NOT combine with 2-deoxyribose to form a nucleic acid is Uracil.

2-deoxyribose is a pentose sugar found in the DNA (Deoxyribonucleic acid). It is devoid of oxygen in its 2' position. The bases found in DNA are Adenine, Guanine, Cytosine and Thymine. Adenine, Guanine, and Cytosine are also found in RNA (Ribonucleic acid). Thymine is not present in RNA, it is only found in DNA. The base found in RNA is Uracil which in turn is not present in DNA. The five carbon sugar present in RNA is ribose which combines with Uracil.

3 0

3 years ago

What Elements that have an atomic number less than 37 and atomic mass greater than 78.4u?

umka21 [38]

Answer:

krypton

bromine

selenium

4 0

2 years ago

Calculate the number of atoms in 0.25 moles of manganese?

White raven [17]

<h3>Answer:</h3>

1.5 × 10²³ atoms Mn

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<h3>Explanation:</h3>

<u>Step 1: Define</u>

0.25 mol Mn

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 0.25 \ mol \ Mn(\frac{6.022 \cdot 10^{23} \ atoms \ Mn}{1 \ mol \ Mn})$
Multiply: $\displaystyle 1.5055 \cdot 10^{23} \ atoms \ Mn$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 2 sig figs.</em>

1.5055 × 10²³ atoms Mn ≈ 1.5 × 10²³ atoms Mn

3 0

2 years ago

At constant pressure, a sample of gas occupies 420 mL at 210 K. What volume does the gas occupy at 250 K?

marissa [1.9K]

V₁ = 420 mL
T₁ = 210 K
V₂ = ?
T₂ = 250 K
(Answer is 500 mL)

5 0

3 years ago