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
ollegr [7]
4 years ago
11

Please help it’s due today :(

Chemistry
1 answer:
mihalych1998 [28]4 years ago
6 0

Answer:

2RbNO_{3}

  • Rb = 2
  • N = 2
  • O = 6

BeF_{2}\\

  • Be = 1
  • F = 2

Explanation:

The number before is how many molecules and the small number is the amount of atoms in the molecules. with the 3 after the O means there is 3 and the 2 doubles everything. The small 2 after F means there are 2 F.

You might be interested in
A molecule that closely resembles the shape of a substrate and therefore also fits into the active site of an enzyme might serve
Fynjy0 [20]

Answer: inhibitor

Explanation:

Enzymes have a shape that closely resemble that of the substrate hence they fit into the substrate by lock and key mechanism. The activity of the enzyme hinges on its similarity with the substrate in shape. Any other molecule similar to the shape of the substrate can fit into the substrate thereby preventing the enzyme from locking with the substrate. Such substances are called inhibitors. They decrease the activity of an enzyme.

6 0
3 years ago
What is the OH- concentration of a solution whose pH is 12.40?
Elanso [62]
PH + pOH = pKw = 14

12.40 + pOH = 14

pOH = 14 - 12.40

pOH = 1.6

[OH⁻] = 10 ^{-pOH}

[OH⁻] = 10 ^{-1.6}

[OH⁻] = 2.5x10⁻² M

hope this helps!
7 0
3 years ago
While analyzing a fingerprint, the forensic expert identified a ridge that had a short arm originating from it. Which ridge char
Diano4ka-milaya [45]
The answer is spur, hope this helped (:
7 0
3 years ago
A reaction occurs in a calorimeter that heats up 15g water from 25 oC to 50 oC. The specific heat of water is 4.184 J/goC. Deter
Anit [1.1K]

The thermal energy (Q) needed : = 1882.8 J

<h3>Further explanation</h3>

Given

15g water from 25 °C to 50 °C

Required

The thermal energy (Q)

Solution

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

Input the value :

Q = 15 g x 4.184 J/g°C x (50 °C- 20 °C)

Q = 1882.8 J

7 0
3 years ago
Walking, biking, and reusing paper are ways that humans can reduce, recycle, and reuse. t or f
zaharov [31]

Answer: The answer is True

Explanation:

The answer is true because Walking, biking, and reusing paper helps the economy

5 0
3 years ago
Other questions:
  • When group 2A element from ion they
    10·1 answer
  • A substance used as a cleaner and a fuel is 37.48% C, 49.93% O and 12.58% H by mass. A 0.2804-g sample of the substance occupies
    12·1 answer
  • Calculate the mass percent composition of sulfur in Al2(SO4)3. Calculate the mass percent composition of sulfur in Al2(SO4)3. 28
    8·1 answer
  • What do you understand by the term positron?
    7·1 answer
  • Explain what would happen if an electron and a proton were brought near each other and then released. why would this happen?
    10·1 answer
  • For a reaction in a galvanic cell both ΔH° and ΔS° are positive. Which of the following statements is true?
    12·1 answer
  • A(n)____ is an interaction that holds two atoms together.<br> Help bc I need this before tmr morning
    10·1 answer
  • g Choose the best fit. Only choose one option once. A(n) ________ is one for which the rate law can be written from the molecula
    6·1 answer
  • What is the mass of 1.84 mol NaCl? Give your
    8·1 answer
  • Ahhh helpppp:))))))))))
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!