1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Neko [114]
2 years ago
12

Help please I need help with these two questions answer truthfully get brainliest?!!​

Chemistry
2 answers:
irina1246 [14]2 years ago
5 0

Answer:

1. 3x-3=18

Value of x=7

2. 4x-5=23

value of x=7

My name is Ann [436]2 years ago
5 0

Answer:

b 7 for one

a 3 for two

Explanation:

You might be interested in
What object has a mass of 10 grams and a volume of 2 mL
Elena-2011 [213]

Answer:

Destiny = 5 g/ml

Explanation:

The formula for density is d=

Knowing this, divide your mass by volume:

10 g / 2 ml = 5 g/ml

Final answer:

Destiny = 5 g/ml

3 0
2 years ago
5. Every organism has a set of instructions that
Goryan [66]

Answer: b. heredity

Explanation:

6 0
3 years ago
Read 2 more answers
Which of the following is not a phase change?
sweet [91]
C. Diffusion is not a phase change.
6 0
2 years ago
An element that can have different physical properties or chemical arrangement is called a (n)
shusha [124]
<h3>Answer:</h3>

D. Allotrope

<h3>Explanation:</h3>

What is allotropy?

  • Allotropy refers to the existence of an element in more than one physical forms.
  • Allotropes are therefore different forms of an element with different physical properties or chemical arrangements.

What are some examples of allotropes?

  • Examples of elements that exhibit allotropy include, sulfur and carbon.
  • Allotropes of carbon are diamond and graphite.
  • Allotropes of sulfur are monoclinic sulfur and rhombic sulfur.
3 0
2 years ago
If the take off velocity of an airplane on a runway is 300 km /hr with an acceleration of 1 m/s2. What is the take off time of t
Rama09 [41]
<h3>Answer:</h3>

83.33 seconds.

<h3>Explanation:</h3>

<u>We are given;</u>

  • Take off velocity as 300 km/hr
  • Acceleration as 1 m/s²

We are required to calculate the take off time of the airplane.

<h3>Step 1: Convert velocity from km/hr to m/s </h3>

We are going to use the conversion factor.

The conversion factor is 3.6 km/hr per m/s

Therefore;

Velocity = 300 km/hr ÷ 3.6 km/hr per m/s

             = 83.33 m/s

<h3>Step 2: Calculate the take off time</h3>

We know that;

v = u + at

where, u is the initial velocity, v the final velocity, a the acceleration and t is time.

But, initial velocity is Zero

Therefore;

83.33 m/s = 1 m/s² × t

Thus;

time = 83.33 m/s ÷ 1 m/s²

       = 83.33 seconds

Therefore, the take off time is 83.33 seconds.

5 0
2 years ago
Other questions:
  • 4. What is the difference between an open system and a<br> closed system?
    14·1 answer
  • A mechanical wave moves through a medium, which can be (
    15·2 answers
  • Which of the following represents a chemical property of hydrogen gas?
    12·1 answer
  • “Na2SO3” represents sodium sulfite.What does the 4 mean in the formula 4Na2SO3?
    8·2 answers
  • What is the hydrogen ion (H+) concentration of a solution of pH 8?
    8·2 answers
  • What is the flow of science ?
    9·1 answer
  • A photon of green light strikes an unknown metal and an electron is emitted. The voltage is set to 2 volts. The electron cannot
    15·1 answer
  • Question 52 points)<br> The electromagnetic waves with the highest frequency are ______ waves
    11·1 answer
  • What are all the possible chemical formulas for-
    8·1 answer
  • How many electrons will aluminum gain or lose in forming an ion?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!