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
posledela
3 years ago
8

A drain cleaner consists of sodium hydroxide and aluminum. When the drain cleaner is added to water, bubbles of hydrogen are pro

duced, and the solution becomes very hot. Which of these best describes what happens when the cleaner is added to water?
A. An endothermic chemical reaction
B. An exothermic chemical reaction
C. An endothermic physical reaction
D. An exothermic physical reaction
Biology
1 answer:
Nana76 [90]3 years ago
7 0
B. An exothermic chemical reaction
You might be interested in
Scientists conduct investigations to answer questions. Before making a valid conclusion, scientists must-
Tresset [83]
A- to collect relevant evidence
6 0
3 years ago
Which of the following would not be included in a description of an organism's niche? a. its trophic level b. its color c. the h
IRISSAK [1]

Answer:

C

Explanation:

This is because niche talks about tje role of an organism.

Considering the humidity of the organism is not given a role to the organism.

7 0
3 years ago
Which of the following would not be considered part of a hawk’s ecological niche? humans, mating ritual, solar radiation, mice?
Arte-miy333 [17]
Solar radiation, because it hasn't (at least noticeably) affected hawks.
8 0
3 years ago
What does it mean for a trait to be autosomal?
Soloha48 [4]
Autosomal recessive is one of several ways that a trait, disorder, or disease can be passed down through families. An autosomal recessive disorder means two copies of an abnormal gene must be present in order for the disease or trait to develope. Here's the website where I got this from if you want to know more, hope this helps! :) Source: https://www.nlm.nih.gov/medlineplus/ency/article/002052.htm
3 0
3 years ago
Explain how the discoveries by Rosalind Franklin helped Watson and Crick build an accurate model of DNA.
Andru [333]

Answer:

Rosalind's x-ray showed that the ladders of nucleotides were inside a double helix.

Watson and Crick built models with the ladders on the outside.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Does Eukaryotes, fungi,both, or none. Have a membrane-bound nucleus ?
    12·1 answer
  • If a homozygous dominant (aa) is crossed with a homozygous recessive (aa) for a given character, the offspring will be _____.
    7·1 answer
  • How does the electron transport chain transfer light energy in photosynthesis
    13·1 answer
  • The amount of _____ must be listed on food labels. a. monounsaturated fat b. polyunsaturated fat c. omega-3 fat d. phospholipids
    15·1 answer
  • _____ are placed on dangerous machinery to detect motion, light, heat, pressure, or other stimuli. Their presence helps to prote
    10·2 answers
  • Why is adaption necessary for species survival ?
    14·2 answers
  • HELP PLEASE!!! TEST IS DUE!!
    14·1 answer
  • Wer<br>Should both of drinks Wand X be taken off the shelves? Why? *​
    15·1 answer
  • There is more then one answer to the question. What does the brachiocephalic divide into? There is more thane one answer to the
    5·1 answer
  • Un camión de mudanzas se desplaza a 120 km hacia el sur, si tarda 4 horas en el recorrido ¿calcula la velocidad con lávelos con
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!